【转】declare-styleable的使用(自定义控件) 以及declare-styleable中format详解

原文网址:http://www.cnblogs.com/622698abc/p/3348692.html

declare-styleable是给自定义控件添加自定义属性用的

1.首先,先写attrs.xml

【转】declare-styleable的使用(自定义控件) 以及declare-styleable中format详解
<?xml version="1.0" encoding="utf-8"?>
<resources> <declare-styleable name="TestAttr">
<attr name="name" format="reference" />
<attr name="age">
<flag name="child" value="10" />
<flag name="young" value="18" />
<flag name="oldman" value="60" />
</attr>
<attr name="textSize" format="dimension" />
</declare-styleable>
</resources>
【转】declare-styleable的使用(自定义控件) 以及declare-styleable中format详解
reference指的是是从string.xml引用过来
flag是自己定义的,类似于 android:gravity="top"
dimension 指的是是从dimension.xml里引用过来的内容.注意,这里如果是dp那就会做像素转换

2.在布局文件里的写法
【转】declare-styleable的使用(自定义控件) 以及declare-styleable中format详解
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:attrstest="http://schemas.android.com/apk/res/com.arlos.attrstest"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >s <com.arlos.attrstest.MyTestView
android:id="@+id/tvTest"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
attrstest:name="@string/myname"
android:gravity="top"
attrstest:age="young"
attrstest:textSize="@dimen/aa"
android:text="@string/hello" /> </LinearLayout>
【转】declare-styleable的使用(自定义控件) 以及declare-styleable中format详解

2.1 先引用这个dtd

xmlns:attrstest="http://schemas.android.com/apk/res/com.arlos.attrstest"
attrstest是随便写的.后面的包名是你所在的项目的根包.也就是在manifest里的com.arlos.attrstest

 2.2 在自定义的控件里写属性

3. 最后在控件的构造方法里取得这些值
【转】declare-styleable的使用(自定义控件) 以及declare-styleable中format详解
public class MyTestView extends TextView {

    public MyTestView(Context context, AttributeSet attrs) {
super(context, attrs); TypedArray tArray = context.obtainStyledAttributes(attrs,
R.styleable.TestAttr);
String name = tArray.getString(R.styleable.TestAttr_name);
System.out.println("name = " + name);
int age = tArray.getInt(R.styleable.TestAttr_age, 200);
System.out.println("age = " + age);
float demin = tArray.getDimension(R.styleable.TestAttr_textSize,0);
System.out.println("demin = " + demin);
tArray.recycle();
}
}
【转】declare-styleable的使用(自定义控件) 以及declare-styleable中format详解

declare-styleable中format详解

我们在做项目的时候,由于android自带的属性不能满足需求,android提供了自定义属性的方法,其中的format是做什么用的?以及如何使用它?下面列出一些常用的。

1. reference:参考某一资源ID。

(1)属性定义:

<declare-styleable name = "名称">

<attr name = "background" format = "reference" />

</declare-styleable>

(2)属性使用:

<ImageView

android:layout_width = "42dip"
                     android:layout_height = "42dip"
                     android:background = "@drawable/图片ID"

/>

2. color:颜色值。

(1)属性定义:

<declare-styleable name = "名称">

<attr name = "textColor" format = "color" />

</declare-styleable>

(2)属性使用:

<TextView

android:layout_width = "42dip"
                     android:layout_height = "42dip"
                     android:textColor = "#00FF00"

/>

3. boolean:布尔值。

(1)属性定义:

<declare-styleable name = "名称">

<attr name = "focusable" format = "boolean" />

</declare-styleable>

(2)属性使用:

<Button

android:layout_width = "42dip"
                    android:layout_height = "42dip"

android:focusable = "true"

/>

4. dimension:尺寸值。

(1)属性定义:

<declare-styleable name = "名称">

<attr name = "layout_width" format = "dimension" />

</declare-styleable>

(2)属性使用:

<Button

android:layout_width = "42dip"
                    android:layout_height = "42dip"

/>

5. float:浮点值。

(1)属性定义:

<declare-styleable name = "AlphaAnimation">

<attr name = "fromAlpha" format = "float" />
                   <attr name = "toAlpha" format = "float" />

</declare-styleable>

(2)属性使用:

<alpha
                   android:fromAlpha = "1.0"
                   android:toAlpha = "0.7"

/>

6. integer:整型值。

(1)属性定义:

<declare-styleable name = "AnimatedRotateDrawable">

<attr name = "visible" />
                   <attr name = "frameDuration" format="integer" />
                   <attr name = "framesCount" format="integer" />
                   <attr name = "pivotX" />
                   <attr name = "pivotY" />
                   <attr name = "drawable" />

</declare-styleable>

(2)属性使用:

<animated-rotate

xmlns:android = "http://schemas.android.com/apk/res/android
                   android:drawable = "@drawable/图片ID" 
                   android:pivotX = "50%" 
                   android:pivotY = "50%" 
                   android:framesCount = "12" 
                   android:frameDuration = "100"

/>

7. string:字符串。

(1)属性定义:

<declare-styleable name = "MapView">
                   <attr name = "apiKey" format = "string" />
            </declare-styleable>

(2)属性使用:

<com.google.android.maps.MapView
                    android:layout_width = "fill_parent"
                    android:layout_height = "fill_parent"
                    android:apiKey = "0jOkQ80oD1JL9C6HAja99uGXCRiS2CGjKO_bc_g"

/>

8. fraction:百分数。

(1)属性定义:

<declare-styleable name="RotateDrawable">
                   <attr name = "visible" />
                   <attr name = "fromDegrees" format = "float" />
                   <attr name = "toDegrees" format = "float" />
                   <attr name = "pivotX" format = "fraction" />
                   <attr name = "pivotY" format = "fraction" />
                   <attr name = "drawable" />
            </declare-styleable>

(2)属性使用:

<rotate

xmlns:android = "http://schemas.android.com/apk/res/android"
               android:interpolator = "@anim/动画ID"

android:fromDegrees = "0"
               android:toDegrees = "360"

android:pivotX = "200%"

android:pivotY = "300%"
               android:duration = "5000"

android:repeatMode = "restart"

android:repeatCount = "infinite"

/>

9. enum:枚举值。

(1)属性定义:

<declare-styleable name="名称">
                   <attr name="orientation">
                          <enum name="horizontal" value="0" />
                          <enum name="vertical" value="1" />
                   </attr>

</declare-styleable>

(2)属性使用:

<LinearLayout

xmlns:android = "http://schemas.android.com/apk/res/android"
                    android:orientation = "vertical"
                    android:layout_width = "fill_parent"
                    android:layout_height = "fill_parent"
                    >
            </LinearLayout>

10. flag:位或运算。

(1)属性定义:

<declare-styleable name="名称">
                    <attr name="windowSoftInputMode">
                            <flag name = "stateUnspecified" value = "0" />
                            <flag name = "stateUnchanged" value = "1" />
                            <flag name = "stateHidden" value = "2" />
                            <flag name = "stateAlwaysHidden" value = "3" />
                            <flag name = "stateVisible" value = "4" />
                            <flag name = "stateAlwaysVisible" value = "5" />
                            <flag name = "adjustUnspecified" value = "0x00" />
                            <flag name = "adjustResize" value = "0x10" />
                            <flag name = "adjustPan" value = "0x20" />
                            <flag name = "adjustNothing" value = "0x30" />
                     </attr>

</declare-styleable>

(2)属性使用:

<activity

android:name = ".StyleAndThemeActivity"
                   android:label = "@string/app_name"
                   android:windowSoftInputMode = "stateUnspecified | stateUnchanged | stateHidden">
                   <intent-filter>
                          <action android:name = "android.intent.action.MAIN" />
                          <category android:name = "android.intent.category.LAUNCHER" />
                   </intent-filter>
             </activity>

特别要注意:

属性定义时可以指定多种类型值。

(1)属性定义:

<declare-styleable name = "名称">

<attr name = "background" format = "reference|color" />

</declare-styleable>

(2)属性使用:

<ImageView

android:layout_width = "42dip"
                     android:layout_height = "42dip"
                     android:background = "@drawable/图片ID|#00FF00"

/>

转 : http://www.cnblogs.com/carlosk/archive/2012/06/06/2538336.html

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