平板适配 AndroidAutoSize 完全解析，踩坑测试与使用注意事项总结

2024-02-27 14:58:45

1、设备屏幕参数获取、计算、几个设备相关参数

计算示范：某手机 6.39英寸（对角线），1英寸是160dp，所以是 1022.4dp，分辨率 2340 x 1080,，勾股定理得到对角线长为2577.2 ，所以屏幕密度比是2577.2 / 6.39 = 2.52。

打印DisplayMetics 与 Configuration如下

常见的几种获取方式

一种获取状态栏的方式

一种获取导航栏的方式

-------------------------竖屏-----------------------

vivo x27

2021-01-05 19:50:35.753 32273-32273/com.example.adaptersize D/----->: displayMetrics1 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-05 19:50:35.753 32273-32273/com.example.adaptersize D/----->: configuration1 screenWidthDp = 360,screenHeightDp = 752,densityDpi = 480
2021-01-05 19:50:35.753 32273-32273/com.example.adaptersize D/----->: displayMetrics2 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-05 19:50:35.753 32273-32273/com.example.adaptersize D/----->: configuration2 screenWidthDp = 360,screenHeightDp = 752,densityDpi = 480
2021-01-05 19:50:35.754 32273-32273/com.example.adaptersize D/----->: displayMetrics3 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-05 19:50:35.755 32273-32273/com.example.adaptersize D/----->: displayMetrics4 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-05 19:50:35.755 32273-32273/com.example.adaptersize D/----->: StatusBarHeight = 84
2021-01-05 19:50:35.963 32273-32273/com.example.adaptersize D/----->: NavigationHeight 126,windowInsets.getSystemWindowInsetBottom = 0,isShowing = false

小米9

2021-01-05 20:12:10.721 31581-31581/com.example.adaptersize D/----->: displayMetrics1 widthPixels = 1080,heightPixels = 2135,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-05 20:12:10.721 31581-31581/com.example.adaptersize D/----->: configuration1 screenWidthDp = 392,screenHeightDp = 776,densityDpi = 440
2021-01-05 20:12:10.721 31581-31581/com.example.adaptersize D/----->: displayMetrics2 widthPixels = 1080,heightPixels = 2135,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-05 20:12:10.721 31581-31581/com.example.adaptersize D/----->: configuration2 screenWidthDp = 392,screenHeightDp = 776,densityDpi = 440
2021-01-05 20:12:10.722 31581-31581/com.example.adaptersize D/----->: displayMetrics3 widthPixels = 1080,heightPixels = 2135,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-05 20:12:10.722 31581-31581/com.example.adaptersize D/----->: displayMetrics4 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-05 20:12:10.722 31581-31581/com.example.adaptersize D/----->: StatusBarHeight = 75
2021-01-05 20:12:10.790 31581-31581/com.example.adaptersize D/----->: NavigationHeight 130,windowInsets.getSystemWindowInsetBottom = 0,isShowing = false

华为mate 20

2021-01-05 20:15:29.832 20649-20649/com.example.adaptersize D/----->: displayMetrics1 widthPixels = 1080,heightPixels = 2159,xdpi = 428.625,ydpi = 428.553,density = 3.0,densityDpi = 480,scaledDensity = 3.4499998
2021-01-05 20:15:29.832 20649-20649/com.example.adaptersize D/----->: configuration1 screenWidthDp = 360,screenHeightDp = 719,densityDpi = 480
2021-01-05 20:15:29.832 20649-20649/com.example.adaptersize D/----->: displayMetrics2 widthPixels = 1080,heightPixels = 2159,xdpi = 428.625,ydpi = 428.553,density = 3.0,densityDpi = 480,scaledDensity = 3.4499998
2021-01-05 20:15:29.833 20649-20649/com.example.adaptersize D/----->: configuration2 screenWidthDp = 360,screenHeightDp = 719,densityDpi = 480
2021-01-05 20:15:29.833 20649-20649/com.example.adaptersize D/----->: displayMetrics3 widthPixels = 1080,heightPixels = 2159,xdpi = 428.625,ydpi = 428.553,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-05 20:15:29.834 20649-20649/com.example.adaptersize D/----->: displayMetrics4 widthPixels = 1080,heightPixels = 2244,xdpi = 428.625,ydpi = 428.553,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-05 20:15:29.834 20649-20649/com.example.adaptersize D/----->: StatusBarHeight = 85
2021-01-05 20:15:30.001 20649-20649/com.example.adaptersize D/----->: NavigationHeight 128,windowInsets.getSystemWindowInsetBottom = 0,isShowing = false

小米8

2021-01-23 11:15:27.587 9644-9644/com.example.adaptersize I/----->: displayMetrics1 1005048000 widthPixels = 1080,heightPixels = 2115,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-23 11:15:27.587 9644-9644/com.example.adaptersize I/----->: displayMetrics2 1005048000 widthPixels = 1080,heightPixels = 2115,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-23 11:15:27.587 9644-9644/com.example.adaptersize I/----->: appDisplayMetrics 1005048000 widthPixels = 1080,heightPixels = 2115,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-23 11:15:27.588 9644-9644/com.example.adaptersize I/----->: displayMetrics3 1005048000 widthPixels = 1080,heightPixels = 2115,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-23 11:15:27.588 9644-9644/com.example.adaptersize I/----->: displayMetrics4 1068249600 widthPixels = 1080,heightPixels = 2248,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75

2021-01-23 11:15:27.610 9644-9644/com.example.adaptersize I/----->: StatusBarHeight = 89

2021-01-23 11:15:27.680 9644-9644/com.example.adaptersize I/----->: NavigationHeight 86,windowInsets.getSystemWindowInsetBottom = 44,isShowing = false

小米9开启虚拟导航栏模式：

2021-01-05 20:19:05.193 2100-2100/com.example.adaptersize D/----->: displayMetrics1 widthPixels = 1080,heightPixels = 2135,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-05 20:19:05.193 2100-2100/com.example.adaptersize D/----->: configuration1 screenWidthDp = 392,screenHeightDp = 776,densityDpi = 440
2021-01-05 20:19:05.193 2100-2100/com.example.adaptersize D/----->: displayMetrics2 widthPixels = 1080,heightPixels = 2135,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-05 20:19:05.193 2100-2100/com.example.adaptersize D/----->: configuration2 screenWidthDp = 392,screenHeightDp = 776,densityDpi = 440
2021-01-05 20:19:05.194 2100-2100/com.example.adaptersize D/----->: displayMetrics3 widthPixels = 1080,heightPixels = 2135,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-05 20:19:05.194 2100-2100/com.example.adaptersize D/----->: displayMetrics4 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-05 20:19:05.194 2100-2100/com.example.adaptersize D/----->: StatusBarHeight = 75
2021-01-05 20:19:05.265 2100-2100/com.example.adaptersize D/----->: NavigationHeight 130,windowInsets.getSystemWindowInsetBottom = 130,isShowing = true

小米8开启虚拟导航模式

2021-01-23 11:07:39.005 4150-4150/com.example.adaptersize I/----->: displayMetrics1 964180800 widthPixels = 1080,heightPixels = 2029,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-23 11:07:39.006 4150-4150/com.example.adaptersize I/----->: displayMetrics2 964180800 widthPixels = 1080,heightPixels = 2029,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-23 11:07:39.006 4150-4150/com.example.adaptersize I/----->: appDisplayMetrics 964180800 widthPixels = 1080,heightPixels = 2029,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-23 11:07:39.007 4150-4150/com.example.adaptersize I/----->: displayMetrics3 964180800 widthPixels = 1080,heightPixels = 2029,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-23 11:07:39.007 4150-4150/com.example.adaptersize I/----->: displayMetrics4 1068249600 widthPixels = 1080,heightPixels = 2248,xdpi = 403.411,ydpi = 402.107,density = 2.75,densityDpi = 440,scaledDensity = 2.75

2021-01-23 11:07:39.030 4150-4150/com.example.adaptersize I/----->: StatusBarHeight = 89

2021-01-23 11:07:39.098 4150-4150/com.example.adaptersize I/----->: NavigationHeight 255,windowInsets.getSystemWindowInsetBottom = 130,isShowing = false

-------------------------横屏-----------------------

小米9

2021-01-06 10:20:20.759 9574-9574/com.example.adaptersize D/----->: displayMetrics1 widthPixels = 2135,heightPixels = 1080,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-06 10:20:20.759 9574-9574/com.example.adaptersize D/----->: configuration1 screenWidthDp = 776,screenHeightDp = 365,densityDpi = 440
2021-01-06 10:20:20.759 9574-9574/com.example.adaptersize D/----->: displayMetrics2 widthPixels = 2135,heightPixels = 1080,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-06 10:20:20.759 9574-9574/com.example.adaptersize D/----->: configuration2 screenWidthDp = 776,screenHeightDp = 365,densityDpi = 440
2021-01-06 10:20:20.759 9574-9574/com.example.adaptersize D/----->: displayMetrics3 widthPixels = 2135,heightPixels = 1080,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-06 10:20:20.760 9574-9574/com.example.adaptersize D/----->: displayMetrics4 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 404.326,density = 2.75,densityDpi = 440,scaledDensity = 2.75
2021-01-06 10:20:20.760 9574-9574/com.example.adaptersize D/----->: StatusBarHeight = 75
2021-01-06 10:20:20.768 9574-9574/com.example.adaptersize D/----->: NavigationHeight 130,windowInsets.getSystemWindowInsetBottom = 0,isShowing = false

	设备分辨率	真实像数密度dpi	真实屏幕密度比density	设备像数密度dpi	设备屏幕密度比density	状态栏(px)	底部导航栏(px)
荣耀平板5	1200 x 1920	225.777	1.4111	320	2	48	68
华为matepad	1600 x 2560	280.275	1.752	400	2.5	79	84
小米9	1080 x 2340	403.411	2.52	440	2.75	75	130
小米8	1080 x 2248	403.411	2.52	440	2.75	89	130
步步高S1W	768 x 1024	159.895	1	160	1	25	40
vivo x27	1080 x 2340	403.411	2.52	480	3	84	126
华为mate20	1080 x 2244	428.625	2.68	480	3	85	128

以上数据表明：

1、设备密度比不完全是真实的屏幕密度比，各机型都有出入。平板设备与真实屏幕密度差异比手机大得多，所以pad自带放大效果。

2、横竖屏获取的宽高相反，另外由于导航栏的差异导致获取的高并不准确。

3、xdpi 和 ydpi是真实的屏幕密度比，两者相同代表屏幕两个维度上密度均匀

ps:可以利用此界定超过7.5英寸的设备是平板：

2、AndroidAutoSize概述

目标适配效果：以宽或者高一个维度去保持某长度在设计图上的占比与实际显示在设备上的占比一致。

具体描述：宽维度为例：设计图宽是360dp，那么一个控件设计图上宽100dp，那么无论在任何手机屏幕上该控件都占屏幕的100/360，所以本质就是以屏幕宽度 / 设计图宽作为新的px dp 转换关系，替换系统dp px原有转换关系。

如何变更系统的屏幕密度比：系统dp转换的场景，如XML，基本都是通过 DisplayMetrics 来计算的：

例如：xml加载走到 ViewGroup generateLayoutParams

几个变量：

DisplayMetrics#density 就是上述的density
DisplayMetrics#densityDpi 就是上述的dpi
DisplayMetrics#scaledDensity 字体的缩放因子，正常情况下和density相等，但是调节系统字体大小后会改变这个值

所以只要变更这几个变量值就可以实现适配目标。

一般理解：

每个activity可以获取 DisplayMetrics 、Configuration activity.getResources().getDisplayMetrics ( ) activity.getResources().getConfiguration()
Application可以获取 DisplayMetrics 、Configuration Application().getResources().getDisplayMetrics ( ) getApplication().getResources().getConfiguration()

Configuration里的 screenWidthDp screenHeightDp也被系统使用，需要同步修改

对于字体sp则同步缩放，比如字体设置不是标准，大字体放大了2倍，autoSize对于dp缩放倍数是1.5则字体最后相对于原有dp放大了两者的乘积3倍。

只能以一边维度进行适配，另外一边则按次维度缩放遵照常规布局规则。

3、AndroidAutoSize 核心逻辑代码：

注册provide提前初始化

初始化重点 ui设计值、宽高维度基准、记存原始屏幕参数

设置activity生命周期回调

回调监听里面用WrapperAutoAdaptStrategy代理默认的DefaultAutoAdaptStrategy适配策略适配，可以看到适配前后的时机都对外进行了暴露，此处回调可以做一些自定义操作

默认适配规则处理了外部三方库的适配兼容、CancelAdapt 取消适配、CustomAdapt自定义适配

CustomAdapt将使用中自定义的设计图尺寸就行适配

在onCreate、onStart里面执行了适配，并且支持了对 Fragment的适配支持

Fragment在onCreate执行了一次适配

开始适配

跟进适配维度与UI设计图值执行最终的autoConvertDensity方法

核心计算

targetDensity 即前面所说的以屏幕宽度 / 设计图宽作为新的dp px转换关系，重新计算Density Dpi ScaledDensity等值后修正activity、application的DisplayMetrics与Configuration

至此，AndroidAutoSize 适配结束。

简而言之，AndroidAuSize利用对生命周期监听修改DisplayMetrics的参数进行页面缩放，实现横或竖一个维度上某长度值在任一手机屏幕上显示效果与在设计图上占比相等。

值得注意的是，初始化中增加了

1、对字体大小设置变更的监听处理

2、横竖屏切换会导致宽高互换，即AndroidAutoSize 设计原意是横屏状态下的页面也要参照横屏的设计图 ,默认用宽维度来进行适配

4、是否靠谱？测试验证

验证displayMetrics参数的修改；验证横竖屏切换生命周期；验证XML、动态加载两种；

测试机器 vivo X27，View 100dp x 100dp ,xml静态添加绿色的View，onResume之后post 执行动态添加红色的View

XMLLandScapeActivity是清单文件指定横屏的activity，CodeLandScapeActivity是在onCreate之后动态设置横屏的activity，手机开启屏幕旋转。

关闭AndroidAutoSize适配

打开 MainActivity

2021-01-28 16:23:13.167 D/----->: *****Application onActivityCreated MainActivity 131104389 前*****
2021-01-28 16:23:13.167 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.167 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.167 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.168 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 122550932 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.169 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 17103165 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.175 D/----->: *****Application onActivityCreated MainActivity 131104389 后*****
2021-01-28 16:23:13.175 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.175 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.175 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.176 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 87876914 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.176 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 258933379 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.178 D/----->: MainActivity 131104389 onCreate
2021-01-28 16:23:13.178 I/----->: StatusBarHeight = 84
2021-01-28 16:23:13.235 D/----->: *****Application onActivityStarted MainActivity 131104389 前*****
2021-01-28 16:23:13.235 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.235 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.235 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.236 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 231794534 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.236 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 123194023 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.237 D/----->: *****Application onActivityStarted MainActivity 131104389 后*****
2021-01-28 16:23:13.237 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.237 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.237 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.238 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 71981908 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.238 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 41200381 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:13.239 D/----->: MainActivity 131104389 onStart
2021-01-28 16:23:13.241 D/----->: MainActivity 131104389 onResume
2021-01-28 16:23:13.277 I/----->: NavigationHeight 126,windowInsets.getSystemWindowInsetBottom = 126,isShowing = true
2021-01-28 16:23:13.345 D/----->: MainActivity 131104389 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:23:13.349 I/----->: View width = 300,height = 300
2021-01-28 16:23:13.362 I/----->: View width = 300,height = 300

再打开一个Main2Activity

2021-01-28 16:23:32.627 D/----->: MainActivity 131104389 onPause
2021-01-28 16:23:32.664 D/----->: *****Application onActivityCreated Main2Activity 44240648 前*****
2021-01-28 16:23:32.664 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.664 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.664 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.665 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 171944071 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.665 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 31331252 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.666 D/----->: *****Application onActivityCreated Main2Activity 44240648 后*****
2021-01-28 16:23:32.666 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.666 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.666 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.667 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 113732573 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.667 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 263484242 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.668 D/----->: Main2Activity 44240648 onCreate
2021-01-28 16:23:32.669 I/----->: StatusBarHeight = 84
2021-01-28 16:23:32.710 D/----->: *****Application onActivityStarted Main2Activity 44240648 前*****
2021-01-28 16:23:32.710 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.710 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.710 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.711 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 62408064 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.711 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 195217337 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.712 D/----->: *****Application onActivityStarted Main2Activity 44240648 后*****
2021-01-28 16:23:32.712 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.712 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.712 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.713 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 255825918 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.713 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 181881695 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:32.714 D/----->: Main2Activity 44240648 onStart
2021-01-28 16:23:32.715 D/----->: Main2Activity 44240648 onResume
2021-01-28 16:23:32.731 I/----->: NavigationHeight 126,windowInsets.getSystemWindowInsetBottom = 126,isShowing = true
2021-01-28 16:23:32.774 D/----->: Main2Activity 44240648 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:23:32.778 I/----->: View width = 300,height = 300
2021-01-28 16:23:32.787 I/----->: View width = 300,height = 300
2021-01-28 16:23:33.132 D/----->: MainActivity 131104389 onStop

Application注册的Activity生命周期回调监听在activity生命周期执行执行；

Activity和Application的displayMetrics对象不同，Activity之间貌似共用同一个displayMetrics；

回退到MainActivity 打开XMLLandScapeActivity

2021-01-28 16:23:53.491 D/----->: MainActivity 131104389 onPause
2021-01-28 16:23:53.617 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 738,screenHeightDp = 332***** 注意后续打印的context是Application
2021-01-28 16:23:53.617 I/----->: displayMetrics context.getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.618 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.618 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.622 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 9256247 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.626 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 72614564 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.660 D/----->: *****Application onActivityCreated XMLLandScapeActivity 194074633 前*****
2021-01-28 16:23:53.660 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.660 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.660 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.661 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 65956805 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.661 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 12065050 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.662 D/----->: *****Application onActivityCreated XMLLandScapeActivity 194074633 后*****
2021-01-28 16:23:53.662 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.662 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.662 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.663 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 170183755 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.663 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 82576936 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.664 D/----->: XMLLandScapeActivity 194074633 onCreate
2021-01-28 16:23:53.736 D/----->: *****Application onActivityStarted XMLLandScapeActivity 194074633 前*****
2021-01-28 16:23:53.736 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.737 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.737 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.740 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 37833048 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.740 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 204815025 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.740 D/----->: *****Application onActivityStarted XMLLandScapeActivity 194074633 后*****
2021-01-28 16:23:53.741 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.741 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.741 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.741 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 7478166 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.742 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 16884503 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:23:53.743 D/----->: XMLLandScapeActivity 194074633 onStart
2021-01-28 16:23:53.744 D/----->: XMLLandScapeActivity 194074633 onResume
2021-01-28 16:23:53.834 D/----->: MainActivity 131104389 onStop
2021-01-28 16:23:53.853 D/----->: XMLLandScapeActivity 194074633 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:23:53.857 I/----->: View width = 300,height = 300
2021-01-28 16:23:53.881 I/----->: View width = 300,height = 300

xml预先设置方向的情况下 Application onConfigurationChanged 执行在onCreate监听之前

再打开一个XMLLandScapeActivity

2021-01-28 16:24:09.529 D/----->: XMLLandScapeActivity 194074633 onPause
2021-01-28 16:24:09.553 D/----->: *****Application onActivityCreated XMLLandScapeActivity 180060167 前*****
2021-01-28 16:24:09.554 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.554 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.554 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.554 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 50712786 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.555 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 59119011 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.555 D/----->: *****Application onActivityCreated XMLLandScapeActivity 180060167 后*****
2021-01-28 16:24:09.555 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.555 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.556 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.556 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 163647648 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.557 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 100992089 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.557 D/----->: XMLLandScapeActivity 180060167 onCreate
2021-01-28 16:24:09.578 D/----->: *****Application onActivityStarted XMLLandScapeActivity 180060167 前*****
2021-01-28 16:24:09.579 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.579 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.579 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.579 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 180359810 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.580 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 200781203 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.580 D/----->: *****Application onActivityStarted XMLLandScapeActivity 180060167 后*****
2021-01-28 16:24:09.580 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.580 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.580 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.581 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 34202064 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.581 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 132298185 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:09.581 D/----->: XMLLandScapeActivity 180060167 onStart
2021-01-28 16:24:09.582 D/----->: XMLLandScapeActivity 180060167 onResume
2021-01-28 16:24:09.658 D/----->: XMLLandScapeActivity 180060167 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:24:09.663 I/----->: View width = 300,height = 300
2021-01-28 16:24:09.684 I/----->: View width = 300,height = 300
2021-01-28 16:24:10.018 D/----->: XMLLandScapeActivity 194074633 onStop

横屏、竖屏Activity之间displayMetrics的对象是不一样的

返回到第一个XMLLandScapeActivity

2021-01-28 16:24:28.216 D/----->: XMLLandScapeActivity 180060167 onPause
2021-01-28 16:24:28.248 D/----->: XMLLandScapeActivity 194074633 onRestart
2021-01-28 16:24:28.250 D/----->: *****Application onActivityStarted XMLLandScapeActivity 194074633 前*****
2021-01-28 16:24:28.251 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.251 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.252 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.255 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 8478464 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.256 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 201827129 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.257 D/----->: *****Application onActivityStarted XMLLandScapeActivity 194074633 后*****
2021-01-28 16:24:28.258 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.258 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.258 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.265 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 168955262 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.267 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 121656031 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:28.267 D/----->: XMLLandScapeActivity 194074633 onStart
2021-01-28 16:24:28.270 D/----->: XMLLandScapeActivity 194074633 onResume
2021-01-28 16:24:28.330 I/----->: View width = 300,height = 300
2021-01-28 16:24:28.330 D/----->: XMLLandScapeActivity 194074633 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:24:28.365 I/----->: View width = 300,height = 300
2021-01-28 16:24:28.678 D/----->: XMLLandScapeActivity 180060167 onStop
2021-01-28 16:24:28.680 D/----->: XMLLandScapeActivity 180060167 onDestroy
返回到MainActivity

2021-01-28 16:24:48.152 D/----->: XMLLandScapeActivity 194074633 onPause
2021-01-28 16:24:48.280 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 360,screenHeightDp = 710***** 注意后续打印的context是Application
2021-01-28 16:24:48.280 I/----->: displayMetrics context.getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.281 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.281 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.282 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 116617587 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.283 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 69896240 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.285 D/----->: MainActivity 131104389 onRestart
2021-01-28 16:24:48.286 D/----->: *****Application onActivityStarted MainActivity 131104389 前*****
2021-01-28 16:24:48.286 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.286 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.286 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.287 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 12242089 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.288 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 228250158 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.288 D/----->: *****Application onActivityStarted MainActivity 131104389 后*****
2021-01-28 16:24:48.288 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.288 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.288 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.289 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 76132815 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.291 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 132642652 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:24:48.292 D/----->: MainActivity 131104389 onStart
2021-01-28 16:24:48.294 D/----->: MainActivity 131104389 onResume
2021-01-28 16:24:48.367 I/----->: View width = 300,height = 300
2021-01-28 16:24:48.367 D/----->: MainActivity 131104389 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:24:48.426 I/----->: View width = 300,height = 300
2021-01-28 16:24:48.486 D/----->: XMLLandScapeActivity 194074633 onStop
2021-01-28 16:24:48.487 D/----->: XMLLandScapeActivity 194074633 onDestroy

打开CodeLandScapeActivity

2021-01-28 16:25:12.683 D/----->: MainActivity 131104389 onPause
2021-01-28 16:25:12.834 D/----->: *****Application onActivityCreated CodeLandScapeActivity 12585809 前*****
2021-01-28 16:25:12.834 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.834 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.834 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.835 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 229155876 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.837 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 178850701 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.837 D/----->: *****Application onActivityCreated CodeLandScapeActivity 12585809 后*****
2021-01-28 16:25:12.837 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.837 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.837 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.837 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 126685506 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.838 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 224306515 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.839 D/----->: CodeLandScapeActivity 12585809 onCreate
2021-01-28 16:25:12.940 D/----->: *****Application onActivityStarted CodeLandScapeActivity 12585809 前*****
2021-01-28 16:25:12.940 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.940 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.940 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.941 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 210722388 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.941 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 12644861 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.942 D/----->: *****Application onActivityStarted CodeLandScapeActivity 12585809 后*****
2021-01-28 16:25:12.942 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.942 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.942 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.943 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 43011826 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.943 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 11241795 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:12.943 D/----->: CodeLandScapeActivity 12585809 onStart
2021-01-28 16:25:12.944 D/----->: CodeLandScapeActivity 12585809 onResume
2021-01-28 16:25:13.016 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 738,screenHeightDp = 332***** 注意后续打印的context是Application
2021-01-28 16:25:13.016 I/----->: displayMetrics context.getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.016 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.016 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.017 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 191285834 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.017 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 195222971 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.020 D/----->: CodeLandScapeActivity 12585809 Activity onConfigurationChanged
2021-01-28 16:25:13.020 I/----->: displayMetrics context.getResources() displayMetrics 227119832 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.020 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.020 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.021 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 157386289 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.022 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 5194006 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:13.038 D/----->: CodeLandScapeActivity 12585809 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:25:13.043 I/----->: View width = 300,height = 300
2021-01-28 16:25:13.061 I/----->: View width = 300,height = 300
2021-01-28 16:25:13.084 D/----->: MainActivity 131104389 onStop

注意到一开始是竖屏的displayMetrics，并且onConfigurationChanged发生在onResume之后，且displayMetrics对象也不是预想的横屏公共的

再打开一个CodeLandScapeActivity

2021-01-28 16:25:26.456 D/----->: CodeLandScapeActivity 12585809 onPause
2021-01-28 16:25:26.488 D/----->: *****Application onActivityCreated CodeLandScapeActivity 208558586 前*****
2021-01-28 16:25:26.488 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.488 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.488 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.489 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 170876321 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.489 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 3677126 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.490 D/----->: *****Application onActivityCreated CodeLandScapeActivity 208558586 后*****
2021-01-28 16:25:26.490 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.490 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.490 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.490 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 25057159 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.491 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 182490804 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.491 D/----->: CodeLandScapeActivity 208558586 onCreate
2021-01-28 16:25:26.513 D/----->: *****Application onActivityStarted CodeLandScapeActivity 208558586 前*****
2021-01-28 16:25:26.513 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.513 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.513 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.513 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 77197585 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.514 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 19202678 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.514 D/----->: *****Application onActivityStarted CodeLandScapeActivity 208558586 后*****
2021-01-28 16:25:26.514 I/----->: displayMetrics context.getResources() displayMetrics 231932476 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.514 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.514 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.514 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 12988535 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.515 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 170988772 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:26.515 D/----->: CodeLandScapeActivity 208558586 onStart
2021-01-28 16:25:26.516 D/----->: CodeLandScapeActivity 208558586 onResume
2021-01-28 16:25:26.590 D/----->: CodeLandScapeActivity 208558586 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:25:26.596 I/----->: View width = 300,height = 300
2021-01-28 16:25:26.621 I/----->: View width = 300,height = 300
2021-01-28 16:25:26.963 D/----->: CodeLandScapeActivity 12585809 onStop

返回到第一个CodeLandScapeActivity

2021-01-28 16:25:40.993 D/----->: CodeLandScapeActivity 208558586 onPause
2021-01-28 16:25:41.017 D/----->: CodeLandScapeActivity 12585809 onRestart
2021-01-28 16:25:41.018 D/----->: *****Application onActivityStarted CodeLandScapeActivity 12585809 前*****
2021-01-28 16:25:41.018 I/----->: displayMetrics context.getResources() displayMetrics 227119832 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.018 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.018 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.020 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 183379303 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.021 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 192249620 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.022 D/----->: *****Application onActivityStarted CodeLandScapeActivity 12585809 后*****
2021-01-28 16:25:41.022 I/----->: displayMetrics context.getResources() displayMetrics 227119832 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.022 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.023 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.024 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 188179389 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.024 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 136789426 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:41.025 D/----->: CodeLandScapeActivity 12585809 onStart
2021-01-28 16:25:41.027 D/----->: CodeLandScapeActivity 12585809 onResume
2021-01-28 16:25:41.083 I/----->: View width = 300,height = 300
2021-01-28 16:25:41.084 D/----->: CodeLandScapeActivity 12585809 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:25:41.116 I/----->: View width = 300,height = 300
2021-01-28 16:25:41.411 D/----->: CodeLandScapeActivity 208558586 onStop
2021-01-28 16:25:41.413 D/----->: CodeLandScapeActivity 208558586 onDestroy

返回到MainActivity

2021-01-28 16:25:53.750 D/----->: CodeLandScapeActivity 12585809 onPause
2021-01-28 16:25:53.858 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 360,screenHeightDp = 710***** 注意后续打印的context是Application
2021-01-28 16:25:53.858 I/----->: displayMetrics context.getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.858 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.858 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.859 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 255259606 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.860 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 104150615 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.862 D/----->: MainActivity 131104389 onRestart
2021-01-28 16:25:53.874 D/----->: *****Application onActivityStarted MainActivity 131104389 前*****
2021-01-28 16:25:53.874 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.874 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.874 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.875 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 159438148 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.877 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 57521709 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.878 D/----->: *****Application onActivityStarted MainActivity 131104389 后*****
2021-01-28 16:25:53.878 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.878 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.878 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.878 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 117864290 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.879 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 233627891 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 16:25:53.879 D/----->: MainActivity 131104389 onStart
2021-01-28 16:25:53.880 D/----->: MainActivity 131104389 onResume
2021-01-28 16:25:53.933 I/----->: View width = 300,height = 300
2021-01-28 16:25:53.933 D/----->: MainActivity 131104389 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 16:25:53.971 I/----->: View width = 300,height = 300
2021-01-28 16:25:54.033 D/----->: CodeLandScapeActivity 12585809 onStop
2021-01-28 16:25:54.034 D/----->: CodeLandScapeActivity 12585809 onDestroy

打开AndroidAutoSize 适配 design_width_in_dp设置为200 design_height_in_dp设置为356 比例 16:9

打开 MainActivity

2021-01-28 17:41:41.423 D/----->: *****Application onActivityCreated MainActivity 131104389 前*****
2021-01-28 17:41:41.424 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.424 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.424 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.425 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 122550932 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.426 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 17103165 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.438 D/----->: !!!!!!!!!!!!! 缓存没有新建 key = 1073746264
2021-01-28 17:41:41.439 E/----->: setDensity activityDisplayMetrics 1147737600 旧density = 3.0,变更为 5.4
2021-01-28 17:41:41.439 E/----->: setDensity applicationDisplayMetrics 1147737600 旧density = 3.0,变更为 5.4
2021-01-28 17:41:41.440 D/----->: *****Application onActivityCreated MainActivity 131104389 后*****
2021-01-28 17:41:41.440 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 17:41:41.440 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.440 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 17:41:41.441 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 87876914 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.442 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 258933379 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.444 D/----->: MainActivity 131104389 onCreate
2021-01-28 17:41:41.444 I/----->: StatusBarHeight = 84
2021-01-28 17:41:41.520 D/----->: *****Application onActivityStarted MainActivity 131104389 前*****
2021-01-28 17:41:41.520 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 17:41:41.520 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.520 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 17:41:41.521 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 231794534 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.522 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 123194023 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.522 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073746264, displayMetricsInfo.getDensity() = 5.4
2021-01-28 17:41:41.522 E/----->: setDensity activityDisplayMetrics 2065927680 旧density = 5.4,变更为 5.4
2021-01-28 17:41:41.522 E/----->: setDensity applicationDisplayMetrics 2065927680 旧density = 5.4,变更为 5.4
2021-01-28 17:41:41.523 D/----->: *****Application onActivityStarted MainActivity 131104389 后*****
2021-01-28 17:41:41.523 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 17:41:41.523 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.523 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 17:41:41.524 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 71981908 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.524 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 41200381 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:41:41.525 D/----->: MainActivity 131104389 onStart
2021-01-28 17:41:41.527 D/----->: MainActivity 131104389 onResume
2021-01-28 17:41:41.581 I/----->: NavigationHeight 227,windowInsets.getSystemWindowInsetBottom = 126,isShowing = false
2021-01-28 17:41:41.719 D/----->: MainActivity 131104389 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 17:41:41.724 I/----->: View width = 540,height = 540
2021-01-28 17:41:41.739 I/----->: View width = 540,height = 540

MainActivity打开 XMLLandScapeActivity

2021-01-28 17:42:54.160 D/----->: MainActivity 131104389 onPause
2021-01-28 17:42:54.317 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 738,screenHeightDp = 332***** 注意后续打印的context是Application
2021-01-28 17:42:54.318 D/----->: !!!!!!!!!!!!变更宽高mScreenWidth = 2214 , mScreenHeight = 1080 !!!!!!!!!!!!!!!!!!!!!!!!!!
2021-01-28 17:42:54.358 D/----->: *****Application onActivityCreated XMLLandScapeActivity 113732573 前*****
2021-01-28 17:42:54.358 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.358 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.358 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.359 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 89385177 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.360 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 109212318 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.360 D/----->: !!!!!!!!!!!!! 缓存没有新建 key = 1073749666
2021-01-28 17:42:54.360 E/----->: setDensity activityDisplayMetrics 1147737600 旧density = 3.0,变更为 11.07
2021-01-28 17:42:54.360 E/----->: setDensity applicationDisplayMetrics 1147737600 旧density = 3.0,变更为 11.07
2021-01-28 17:42:54.361 D/----->: *****Application onActivityCreated XMLLandScapeActivity 113732573 后*****
2021-01-28 17:42:54.361 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 17:42:54.361 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.361 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 17:42:54.362 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 145432959 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.363 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 206316876 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.364 D/----->: XMLLandScapeActivity 113732573 onCreate
2021-01-28 17:42:54.444 D/----->: *****Application onActivityStarted XMLLandScapeActivity 113732573 前*****
2021-01-28 17:42:54.444 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 17:42:54.444 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.444 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 17:42:54.445 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 164198780 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.446 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 263500293 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.447 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073749666, displayMetricsInfo.getDensity() = 11.07
2021-01-28 17:42:54.447 E/----->: setDensity activityDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 17:42:54.448 E/----->: setDensity applicationDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 17:42:54.448 D/----->: *****Application onActivityStarted XMLLandScapeActivity 113732573 后*****
2021-01-28 17:42:54.448 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 17:42:54.449 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.449 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 17:42:54.449 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 51085914 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.450 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 154803339 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:42:54.450 D/----->: XMLLandScapeActivity 113732573 onStart
2021-01-28 17:42:54.451 D/----->: XMLLandScapeActivity 113732573 onResume
2021-01-28 17:42:54.562 D/----->: MainActivity 131104389 onStop
2021-01-28 17:42:54.576 D/----->: XMLLandScapeActivity 113732573 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 17:42:54.587 I/----->: View width = 1107,height = 996
2021-01-28 17:42:54.616 I/----->: View width = 1107,height = 996

application注册的横竖屏切换监听调换了长宽，AndroidAutoSize会基于横屏的长度/设计图宽进行缩放适配

返回MainActivity

2021-01-28 17:44:39.723 D/----->: XMLLandScapeActivity 113732573 onPause
2021-01-28 17:44:39.862 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 360,screenHeightDp = 710***** 注意后续打印的context是Application
2021-01-28 17:44:39.863 D/----->: !!!!!!!!!!!!变更宽高mScreenWidth = 1080 , mScreenHeight = 2214 !!!!!!!!!!!!!!!!!!!!!!!!!!
2021-01-28 17:44:39.866 D/----->: MainActivity 131104389 onRestart
2021-01-28 17:44:39.870 D/----->: *****Application onActivityStarted MainActivity 131104389 前*****
2021-01-28 17:44:39.870 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:44:39.870 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:44:39.871 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:44:39.871 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 69775730 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:44:39.872 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 194017731 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:44:39.872 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073746264, displayMetricsInfo.getDensity() = 5.4
2021-01-28 17:44:39.872 E/----->: setDensity activityDisplayMetrics 1147737600 旧density = 3.0,变更为 5.4
2021-01-28 17:44:39.872 E/----->: setDensity applicationDisplayMetrics 1147737600 旧density = 3.0,变更为 5.4
2021-01-28 17:44:39.873 D/----->: *****Application onActivityStarted MainActivity 131104389 后*****
2021-01-28 17:44:39.873 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 17:44:39.873 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:44:39.873 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 17:44:39.876 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 24080960 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:44:39.877 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 247682425 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 17:44:39.877 D/----->: MainActivity 131104389 onStart
2021-01-28 17:44:39.878 D/----->: MainActivity 131104389 onResume
2021-01-28 17:44:39.931 I/----->: View width = 540,height = 540
2021-01-28 17:44:39.933 D/----->: MainActivity 131104389 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 17:44:40.007 I/----->: View width = 540,height = 540
2021-01-28 17:44:40.038 D/----->: XMLLandScapeActivity 113732573 onStop
2021-01-28 17:44:40.039 D/----->: XMLLandScapeActivity 113732573 onDestroy

在 onConfigurationChanged 执行后displayMetrics被重置了，MainActivity之所以正常是因为onStart方法里面又变更了一次参数设置

再打开 XMLLandScapeActivity 再返回

2021-01-28 19:45:15.842 D/----->: MainActivity 131104389 onPause
2021-01-28 19:45:15.936 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 738,screenHeightDp = 332***** 注意后续打印的context是Application
2021-01-28 19:45:15.937 D/----->: !!!!!!!!!!!!变更宽高mScreenWidth = 2214 , mScreenHeight = 1080 !!!!!!!!!!!!!!!!!!!!!!!!!!
2021-01-28 19:45:15.953 D/----->: *****Application onActivityCreated XMLLandScapeActivity 108299232 前*****
2021-01-28 19:45:15.954 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:15.954 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:15.954 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:15.954 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 211674431 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:15.955 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 147717644 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:15.955 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073749666, displayMetricsInfo.getDensity() = 11.07
2021-01-28 19:45:15.955 E/----->: setDensity activityDisplayMetrics 1147737600 旧density = 3.0,变更为 11.07
2021-01-28 19:45:15.955 E/----->: setDensity applicationDisplayMetrics 1147737600 旧density = 3.0,变更为 11.07
2021-01-28 19:45:15.956 D/----->: *****Application onActivityCreated XMLLandScapeActivity 108299232 后*****
2021-01-28 19:45:15.956 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 19:45:15.956 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:15.956 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 19:45:15.957 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 207946581 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:15.957 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 113541482 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:15.958 D/----->: XMLLandScapeActivity 108299232 onCreate
2021-01-28 19:45:16.010 D/----->: *****Application onActivityStarted XMLLandScapeActivity 108299232 前*****
2021-01-28 19:45:16.010 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 19:45:16.011 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.011 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 19:45:16.012 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 153132079 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.014 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 231932476 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.015 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073749666, displayMetricsInfo.getDensity() = 11.07
2021-01-28 19:45:16.015 E/----->: setDensity activityDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 19:45:16.015 E/----->: setDensity applicationDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 19:45:16.019 D/----->: *****Application onActivityStarted XMLLandScapeActivity 108299232 后*****
2021-01-28 19:45:16.019 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 19:45:16.019 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.019 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 19:45:16.021 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 65956805 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.022 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 12065050 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.023 D/----->: XMLLandScapeActivity 108299232 onStart
2021-01-28 19:45:16.026 D/----->: XMLLandScapeActivity 108299232 onResume
2021-01-28 19:45:16.074 D/----->: MainActivity 131104389 Activity onConfigurationChanged
2021-01-28 19:45:16.074 I/----->: displayMetrics context.getResources() displayMetrics 46878333 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.074 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.075 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 19:45:16.076 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 69775730 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.076 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 194017731 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:16.134 D/----->: MainActivity 131104389 onStop
2021-01-28 19:45:16.142 D/----->: XMLLandScapeActivity 108299232 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 19:45:16.150 I/----->: View width = 1107,height = 996
2021-01-28 19:45:16.186 I/----->: View width = 1107,height = 996

2021-01-28 19:45:37.185 D/----->: XMLLandScapeActivity 108299232 onPause
2021-01-28 19:45:37.315 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 360,screenHeightDp = 710***** 注意后续打印的context是Application
2021-01-28 19:45:37.316 D/----->: !!!!!!!!!!!!变更宽高mScreenWidth = 1080 , mScreenHeight = 2214 !!!!!!!!!!!!!!!!!!!!!!!!!!
2021-01-28 19:45:37.317 D/----->: MainActivity 131104389 onRestart
2021-01-28 19:45:37.320 D/----->: *****Application onActivityStarted MainActivity 131104389 前*****
2021-01-28 19:45:37.320 I/----->: displayMetrics context.getResources() displayMetrics 46878333 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.320 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.320 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.321 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 204815025 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.321 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 7478166 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.321 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073746264, displayMetricsInfo.getDensity() = 5.4
2021-01-28 19:45:37.322 E/----->: setDensity activityDisplayMetrics 1147737600 旧density = 3.0,变更为 5.4
2021-01-28 19:45:37.322 E/----->: setDensity applicationDisplayMetrics 1147737600 旧density = 3.0,变更为 5.4
2021-01-28 19:45:37.322 D/----->: *****Application onActivityStarted MainActivity 131104389 后*****
2021-01-28 19:45:37.322 I/----->: displayMetrics context.getResources() displayMetrics 46878333 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 19:45:37.322 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.323 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 19:45:37.323 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 16884503 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.324 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 137208580 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.324 D/----->: MainActivity 131104389 onStart
2021-01-28 19:45:37.325 D/----->: MainActivity 131104389 onResume
2021-01-28 19:45:37.352 D/----->: MainActivity 131104389 Activity onConfigurationChanged
2021-01-28 19:45:37.352 I/----->: displayMetrics context.getResources() displayMetrics 132615913 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.352 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.352 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 19:45:37.353 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 207161198 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.354 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 255843855 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 19:45:37.389 I/----->: View width = 540,height = 540
2021-01-28 19:45:37.389 D/----->: MainActivity 131104389 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 19:45:37.445 I/----->: View width = 300,height = 300
2021-01-28 19:45:37.466 D/----->: XMLLandScapeActivity 108299232 onStop
2021-01-28 19:45:37.468 D/----->: XMLLandScapeActivity 108299232 onDestroy

在 onConfigurationChanged 执行后displayMetrics被重置了，MainActivity动态添加的view没有缩放

MainActivity打开CodeLandScapeActivity 接着在手机保持竖屏状态下再打开一个 CodeLandScapeActivity 然后返回到第一个 CodeLandScapeActivity

2021-01-28 18:49:46.796 D/----->: MainActivity 131104389 onPause
2021-01-28 18:49:46.924 D/----->: *****Application onActivityCreated CodeLandScapeActivity 113732573 前*****
2021-01-28 18:49:46.924 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:49:46.924 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.924 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:49:46.925 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 2275104 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.926 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 89385177 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.926 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073746264, displayMetricsInfo.getDensity() = 5.4
2021-01-28 18:49:46.926 E/----->: setDensity activityDisplayMetrics 2065927680 旧density = 5.4,变更为 5.4
2021-01-28 18:49:46.927 E/----->: setDensity applicationDisplayMetrics 2065927680 旧density = 5.4,变更为 5.4
2021-01-28 18:49:46.927 D/----->: *****Application onActivityCreated CodeLandScapeActivity 113732573 后*****
2021-01-28 18:49:46.928 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:49:46.928 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.928 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:49:46.929 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 109212318 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.929 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 145432959 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.930 D/----->: CodeLandScapeActivity 113732573 onCreate
2021-01-28 18:49:46.978 D/----->: *****Application onActivityStarted CodeLandScapeActivity 113732573 前*****
2021-01-28 18:49:46.978 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:49:46.979 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.979 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:49:46.980 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 83081801 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.981 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 201244494 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.981 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073746264, displayMetricsInfo.getDensity() = 5.4
2021-01-28 18:49:46.981 E/----->: setDensity activityDisplayMetrics 2065927680 旧density = 5.4,变更为 5.4
2021-01-28 18:49:46.981 E/----->: setDensity applicationDisplayMetrics 2065927680 旧density = 5.4,变更为 5.4
2021-01-28 18:49:46.986 D/----->: *****Application onActivityStarted CodeLandScapeActivity 113732573 后*****
2021-01-28 18:49:46.986 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:49:46.986 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.987 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:49:46.989 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 236284015 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.990 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 164198780 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:46.990 D/----->: CodeLandScapeActivity 113732573 onStart
2021-01-28 18:49:46.991 D/----->: CodeLandScapeActivity 113732573 onResume
2021-01-28 18:49:47.091 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 738,screenHeightDp = 332***** 注意后续打印的context是Application
2021-01-28 18:49:47.092 D/----->: !!!!!!!!!!!!变更宽高mScreenWidth = 2214 , mScreenHeight = 1080 !!!!!!!!!!!!!!!!!!!!!!!!!!
2021-01-28 18:49:47.096 D/----->: CodeLandScapeActivity 113732573 Activity onConfigurationChanged
2021-01-28 18:49:47.097 I/----->: displayMetrics context.getResources() displayMetrics 212596327 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:47.097 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:47.097 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:47.097 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 83196948 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:47.098 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 63708349 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:49:47.126 D/----->: CodeLandScapeActivity 113732573 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 18:49:47.137 I/----->: View width = 540,height = 540
2021-01-28 18:49:47.174 I/----->: View width = 300,height = 300
2021-01-28 18:49:47.208 D/----->: MainActivity 131104389 onStop

静态view创建使用的是5.4，在 onConfigurationChanged 执行后displayMetrics被重置了，动态view添加在之后出现

2021-01-28 18:50:11.304 D/----->: CodeLandScapeActivity 113732573 onPause
2021-01-28 18:50:11.427 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 360,screenHeightDp = 710***** 注意后续打印的context是Application
2021-01-28 18:50:11.428 D/----->: !!!!!!!!!!!!变更宽高mScreenWidth = 1080 , mScreenHeight = 2214 !!!!!!!!!!!!!!!!!!!!!!!!!!
2021-01-28 18:50:11.463 D/----->: *****Application onActivityCreated CodeLandScapeActivity 91886148 前*****
2021-01-28 18:50:11.464 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.464 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.464 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.465 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 116457971 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.466 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 136842928 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.466 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073746264, displayMetricsInfo.getDensity() = 5.4
2021-01-28 18:50:11.466 E/----->: setDensity activityDisplayMetrics 1147737600 旧density = 3.0,变更为 5.4
2021-01-28 18:50:11.466 E/----->: setDensity applicationDisplayMetrics 1147737600 旧density = 3.0,变更为 5.4
2021-01-28 18:50:11.468 D/----->: *****Application onActivityCreated CodeLandScapeActivity 91886148 后*****
2021-01-28 18:50:11.469 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:50:11.469 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.469 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:50:11.469 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 162009385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.470 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 8387758 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.471 D/----->: CodeLandScapeActivity 91886148 onCreate
2021-01-28 18:50:11.513 D/----->: *****Application onActivityStarted CodeLandScapeActivity 91886148 前*****
2021-01-28 18:50:11.514 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:50:11.514 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.514 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:50:11.516 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 173952483 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.517 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 108299232 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.517 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073746264, displayMetricsInfo.getDensity() = 5.4
2021-01-28 18:50:11.517 E/----->: setDensity activityDisplayMetrics 2065927680 旧density = 5.4,变更为 5.4
2021-01-28 18:50:11.517 E/----->: setDensity applicationDisplayMetrics 2065927680 旧density = 5.4,变更为 5.4
2021-01-28 18:50:11.519 D/----->: *****Application onActivityStarted CodeLandScapeActivity 91886148 后*****
2021-01-28 18:50:11.519 I/----->: displayMetrics context.getResources() displayMetrics 119504385 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:50:11.519 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.519 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 5.4,densityDpi = 864,scaledDensity = 5.4
2021-01-28 18:50:11.521 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 252352153 widthPixels = 1080,heightPixels = 2214,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.522 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 79359326 widthPixels = 1080,heightPixels = 2340,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:11.523 D/----->: CodeLandScapeActivity 91886148 onStart
2021-01-28 18:50:11.526 D/----->: CodeLandScapeActivity 91886148 onResume
2021-01-28 18:50:11.627 D/----->: CodeLandScapeActivity 113732573 onStop
2021-01-28 18:50:11.644 D/----->: CodeLandScapeActivity 91886148 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 18:50:11.647 I/----->: View width = 540,height = 540
2021-01-28 18:50:11.690 I/----->: View width = 540,height = 540
2021-01-28 18:50:12.205 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 738,screenHeightDp = 332***** 注意后续打印的context是Application
2021-01-28 18:50:12.207 D/----->: !!!!!!!!!!!!变更宽高mScreenWidth = 2214 , mScreenHeight = 1080 !!!!!!!!!!!!!!!!!!!!!!!!!!
2021-01-28 18:50:12.211 D/----->: CodeLandScapeActivity 91886148 Activity onConfigurationChanged
2021-01-28 18:50:12.212 I/----->: displayMetrics context.getResources() displayMetrics 212596327 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:12.212 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:12.212 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:12.215 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 258689037 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:12.216 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 128963522 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0

静态view创建使用的是5.4，在 onConfigurationChanged 执行后displayMetrics被重置了，动态view添加在之前出现

2021-01-28 18:50:48.201 D/----->: CodeLandScapeActivity 91886148 onPause
2021-01-28 18:50:48.223 D/----->: CodeLandScapeActivity 113732573 onRestart
2021-01-28 18:50:48.228 D/----->: *****Application onActivityStarted CodeLandScapeActivity 113732573 前*****
2021-01-28 18:50:48.228 I/----->: displayMetrics context.getResources() displayMetrics 212596327 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:48.228 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:48.228 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:48.230 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 153132079 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:48.230 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 231932476 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:48.231 D/----->: !!!!!!!!!!!!! 缓存没有新建 key = 1073749666
2021-01-28 18:50:48.231 E/----->: setDensity activityDisplayMetrics 1147737600 旧density = 3.0,变更为 11.07
2021-01-28 18:50:48.231 E/----->: setDensity applicationDisplayMetrics 1147737600 旧density = 3.0,变更为 11.07
2021-01-28 18:50:48.233 D/----->: *****Application onActivityStarted CodeLandScapeActivity 113732573 后*****
2021-01-28 18:50:48.233 I/----->: displayMetrics context.getResources() displayMetrics 212596327 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:50:48.233 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:48.233 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:50:48.234 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 65956805 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:48.234 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 12065050 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:50:48.235 D/----->: CodeLandScapeActivity 113732573 onStart
2021-01-28 18:50:48.236 D/----->: CodeLandScapeActivity 113732573 onResume
2021-01-28 18:50:48.303 I/----->: View width = 540,height = 540
2021-01-28 18:50:48.303 D/----->: CodeLandScapeActivity 113732573 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 18:50:48.367 I/----->: View width = 1107,height = 996
2021-01-28 18:50:48.651 D/----->: CodeLandScapeActivity 91886148 onStop
2021-01-28 18:50:48.653 D/----->: CodeLandScapeActivity 91886148 onDestroy

onstart之后动态创建view使用的是横屏长度/设计图宽尺寸

MainActivity打开CodeLandScapeActivity 接着在手机保持横屏状态下再打开一个 CodeLandScapeActivity 然后返回到第一个 CodeLandScapeActivity

2021-01-28 18:55:08.280 D/----->: MainActivity 131104389 onPause
2021-01-28 18:55:08.412 D/----->: *****Application onConfigurationChanged newConfig screenWidthDp 738,screenHeightDp = 332***** 注意后续打印的context是Application
2021-01-28 18:55:08.413 D/----->: !!!!!!!!!!!!变更宽高mScreenWidth = 2214 , mScreenHeight = 1080 !!!!!!!!!!!!!!!!!!!!!!!!!!
2021-01-28 18:55:08.479 D/----->: *****Application onActivityCreated CodeLandScapeActivity 113732573 前*****
2021-01-28 18:55:08.480 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.480 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.480 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.482 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 89385177 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.482 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 109212318 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.483 D/----->: !!!!!!!!!!!!! 缓存没有新建 key = 1073749666
2021-01-28 18:55:08.483 E/----->: setDensity activityDisplayMetrics 1147737600 旧density = 3.0,变更为 11.07
2021-01-28 18:55:08.483 E/----->: setDensity applicationDisplayMetrics 1147737600 旧density = 3.0,变更为 11.07
2021-01-28 18:55:08.484 D/----->: *****Application onActivityCreated CodeLandScapeActivity 113732573 后*****
2021-01-28 18:55:08.484 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:08.484 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.484 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:08.486 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 145432959 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.489 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 206316876 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.490 D/----->: CodeLandScapeActivity 113732573 onCreate
2021-01-28 18:55:08.557 D/----->: *****Application onActivityStarted CodeLandScapeActivity 113732573 前*****
2021-01-28 18:55:08.558 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:08.558 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.558 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:08.558 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 164198780 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.559 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 263500293 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.559 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073749666, displayMetricsInfo.getDensity() = 11.07
2021-01-28 18:55:08.560 E/----->: setDensity activityDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 18:55:08.560 E/----->: setDensity applicationDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 18:55:08.561 D/----->: *****Application onActivityStarted CodeLandScapeActivity 113732573 后*****
2021-01-28 18:55:08.561 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:08.561 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.561 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:08.562 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 51085914 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.563 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 154803339 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:08.564 D/----->: CodeLandScapeActivity 113732573 onStart
2021-01-28 18:55:08.566 D/----->: CodeLandScapeActivity 113732573 onResume
2021-01-28 18:55:08.628 D/----->: MainActivity 131104389 onStop
2021-01-28 18:55:08.638 D/----->: CodeLandScapeActivity 113732573 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 18:55:08.642 I/----->: View width = 1107,height = 996
2021-01-28 18:55:08.666 I/----->: View width = 1107,height = 996

2021-01-28 18:55:39.427 D/----->: CodeLandScapeActivity 113732573 onPause
2021-01-28 18:55:39.459 D/----->: *****Application onActivityCreated CodeLandScapeActivity 33335510 前*****
2021-01-28 18:55:39.459 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:39.460 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.460 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:39.460 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 186822445 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.461 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 150109282 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.461 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073749666, displayMetricsInfo.getDensity() = 11.07
2021-01-28 18:55:39.461 E/----->: setDensity activityDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 18:55:39.461 E/----->: setDensity applicationDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 18:55:39.462 D/----->: *****Application onActivityCreated CodeLandScapeActivity 33335510 后*****
2021-01-28 18:55:39.462 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:39.462 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.462 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:39.463 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 116457971 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.464 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 136842928 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.464 D/----->: CodeLandScapeActivity 33335510 onCreate
2021-01-28 18:55:39.486 D/----->: *****Application onActivityStarted CodeLandScapeActivity 33335510 前*****
2021-01-28 18:55:39.486 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:39.486 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.486 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:39.486 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 154844573 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.487 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 137806354 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.487 D/----->: !!!!!!!!!!!!! 缓存找到 key = 1073749666, displayMetricsInfo.getDensity() = 11.07
2021-01-28 18:55:39.487 E/----->: setDensity activityDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 18:55:39.487 E/----->: setDensity applicationDisplayMetrics -60293776 旧density = 11.07,变更为 11.07
2021-01-28 18:55:39.488 D/----->: *****Application onActivityStarted CodeLandScapeActivity 33335510 后*****
2021-01-28 18:55:39.488 I/----->: displayMetrics context.getResources() displayMetrics 2275104 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:39.488 I/----->: displayMetrics Resources.getSystem() displayMetrics 110306470 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.488 I/----->: displayMetrics getApplicationContext().getResources() displayMetrics 3497703 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 11.07,densityDpi = 1771,scaledDensity = 11.07
2021-01-28 18:55:39.489 I/----->: displayMetrics context.getSystemService.getDefaultDisplay() displayMetrics 173952483 widthPixels = 2214,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.489 I/----->: displayMetrics context.getSystemService.getRealMetrics displayMetrics 108299232 widthPixels = 2340,heightPixels = 1080,xdpi = 403.411,ydpi = 401.594,density = 3.0,densityDpi = 480,scaledDensity = 3.0
2021-01-28 18:55:39.489 D/----->: CodeLandScapeActivity 33335510 onStart
2021-01-28 18:55:39.490 D/----->: CodeLandScapeActivity 33335510 onResume
2021-01-28 18:55:39.546 D/----->: CodeLandScapeActivity 33335510 !!!!!!!!!动态add!!!!!!!!!
2021-01-28 18:55:39.551 I/----->: View width = 1107,height = 996
2021-01-28 18:55:39.584 I/----->: View width = 1107,height = 996
2021-01-28 18:55:39.894 D/----->: CodeLandScapeActivity 113732573 onStop

更复杂的旋转来回进出将会出现更多的缩放变动。

综上测试：

动态横竖屏的切换、不同横竖屏页面之间的来回跳转、View静动态加载方式等都会使AndroidAutoSize的缩放倍数发生变化。

5、调整优化

1、横屏的页面是否也可以按照竖屏的放大比率适配？

如果可行那么直接去掉AndroidAutoSize 库中application.registerComponentCallbacks onConfigurationChanged 中对于mScreenWidth和mScreenHeight的修改即可去除某些情况下缩放变化问题

2、onConfigurationChange会重置displayMetrics导致动态添加的View缩放不一致

所以 onConfigurationChange监听里面也追加一次参数修改 AutoSize.autoConvertDensityOfGlobal(this) 可以保证动态添加的View缩放比一致

以上两处调整后，缩放比稳定，测试验证有效。

1修改通过无论横竖屏始终使用手机短边长度/设计图短边长度来确保缩放比率的一致就要求不能完全照搬设计图各控件的宽。比如设计图是16:9比例短边1080 x 1920px 算 360dp x 640dp 如果某个ui控件铺满则宽度填640dp，那么在1080 x 2200的手机上就留白，在1080 x 1800 手机上将越界。另一方面设备的长宽比差异，导航栏差异、设备获取差异导致没有办法按长边计算适配，为了修复上述问题，使用1方案在宽维度上不能照搬设计图宽，还是需要搭配使用 matchParent 、wrap_content、gravity

因为AndroidAutoSize 改变了dp px转换工具，所以app的dp px转换工具类也需要做相应修改。

6、思考与讨论

1、正是因为activity共用displayMetrics，所以cancelAdapt需要还原初始参数。

2、在手机、平板上完全按照等比缩放设计图的方式去显示是否符合自家 UI的设计要求？

3、因为有测试中的bug，如果只按照短边适配，那么横屏下的ui控件和竖屏状态下的宽高是一致的，UI是否接受，可以横屏也可以竖屏的这种动态页面写ui有什么注意点?

4、如若完全使用AndroidAutoSize机制，完全不用matchParent 和wrapContent，所有的页面控件宽高都照搬设计稿尺寸，后续一旦去除的成本会很高，并且将完全不可以对缩放比作修改。

5、平板尺寸大，设备屏幕密度与真实的相差也比较大。所以在平板上的页面完全按照手机上等比缩放会显得特别大。

例如如下代码通过修改设计图尺寸限制缩放比率，可以使的控件在平板上略微放大，但同样引入问题3，如果一个页面完全照搬设计图写的宽高dp值，那么限制缩放比率可能将使得控件显示区域不能铺满屏幕上将留白

6、如果想使用AndroidAutoSize的缩放机制而又不完全被限制死那么在布局的编写上有没有什么操作空间以及注意的地方

UI需求的统一才能开发的统一，选择了一个方案可能得接受随之而来的缺点，在 UI需求与开发方案的一致的基础上找到平衡点才能选择适合自己的屏幕适配方案。