我们知道IOS上的应用,状态栏的颜色总能与应用标题栏颜色保持一致,用户体验很不错,那安卓是否可以呢?若是在安卓4.4之前,答案是否定的,但在4.4之后,谷歌允许开发者自定义状态栏背景颜色啦,这是个不错的体验!若你手机上安装有最新版的qq,并且你的安卓SDK版本是4.4及以上,你可以看下它的效果:
实现此功能有两种方法:
1.在xml中设置主题或自定义style;
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- Theme.Holo.Light.NoActionBar.TranslucentDecor
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- Theme.Holo.NoActionBar.TranslucentDecor
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- <style name="AppTheme" parent="AppBaseTheme">
- <!-- Status Bar -->
- <item name="android:windowTranslucentStatus">true</item>
- <!-- Navigation Bar -->
- <item name="android:windowTranslucentNavigation">true</item>
- </style>
鉴于市面上各种手机的SDK的各种版本,不建议采用这种方法;
2.在代码中控制;
可以首先创建一个BaseActivity,在onCreate方法中进行处理:
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- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
- setTranslucentStatus(true);
- SystemBarTintManager tintManager = new SystemBarTintManager(this);
- tintManager.setStatusBarTintEnabled(true);
- tintManager.setStatusBarTintResource(R.color.top_bg_color);//通知栏所需颜色
- }
- setContentView(R.layout.main_activity);
- }
- @TargetApi(19)
- private void setTranslucentStatus(boolean on) {
- Window win = getWindow();
- WindowManager.LayoutParams winParams = win.getAttributes();
- final int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
- if (on) {
- winParams.flags |= bits;
- } else {
- winParams.flags &= ~bits;
- }
- win.setAttributes(winParams);
- }
需注意的是, tintManager.setStatusBarTintResource(R.color.top_bg_color);这一步的颜色值(即把你的状态栏颜色与你的标题栏颜色保持一致)要写在color.xml中去,如果用Color.praseColor则会报错。
SystemBarTintManager.java源码:
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- import android.annotation.SuppressLint;
- import android.annotation.TargetApi;
- import android.app.Activity;
- import android.content.Context;
- import android.content.res.Configuration;
- import android.content.res.Resources;
- import android.content.res.TypedArray;
- import android.graphics.drawable.Drawable;
- import android.os.Build;
- import android.util.DisplayMetrics;
- import android.util.TypedValue;
- import android.view.Gravity;
- import android.view.View;
- import android.view.ViewConfiguration;
- import android.view.ViewGroup;
- import android.view.Window;
- import android.view.WindowManager;
- import android.widget.FrameLayout.LayoutParams;
- import java.lang.reflect.Method;
- /**
- * Class to manage status and navigation bar tint effects when using KitKat
- * translucent system UI modes.
- *
- */
- @SuppressWarnings({ "rawtypes", "unchecked" })
- public class SystemBarTintManager {
- static {
- // Android allows a system property to override the presence of the navigation bar.
- // Used by the emulator.
- // See https://github.com/android/platform_frameworks_base/blob/master/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java#L1076
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
- try {
- Class c = Class.forName("android.os.SystemProperties");
- Method m = c.getDeclaredMethod("get", String.class);
- m.setAccessible(true);
- sNavBarOverride = (String) m.invoke(null, "qemu.hw.mainkeys");
- } catch (Throwable e) {
- sNavBarOverride = null;
- }
- }
- }
- /**
- * The default system bar tint color value.
- */
- public static final int DEFAULT_TINT_COLOR = 0x99000000;
- private static String sNavBarOverride;
- private final SystemBarConfig mConfig;
- private boolean mStatusBarAvailable;
- private boolean mNavBarAvailable;
- private boolean mStatusBarTintEnabled;
- private boolean mNavBarTintEnabled;
- private View mStatusBarTintView;
- private View mNavBarTintView;
- /**
- * Constructor. Call this in the host activity onCreate method after its
- * content view has been set. You should always create new instances when
- * the host activity is recreated.
- *
- * @param activity The host activity.
- */
- @TargetApi(19)
- public SystemBarTintManager(Activity activity) {
- Window win = activity.getWindow();
- ViewGroup decorViewGroup = (ViewGroup) win.getDecorView();
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
- // check theme attrs
- int[] attrs = {android.R.attr.windowTranslucentStatus,
- android.R.attr.windowTranslucentNavigation};
- TypedArray a = activity.obtainStyledAttributes(attrs);
- try {
- mStatusBarAvailable = a.getBoolean(0, false);
- mNavBarAvailable = a.getBoolean(1, false);
- } finally {
- a.recycle();
- }
- // check window flags
- WindowManager.LayoutParams winParams = win.getAttributes();
- int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
- if ((winParams.flags & bits) != 0) {
- mStatusBarAvailable = true;
- }
- bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
- if ((winParams.flags & bits) != 0) {
- mNavBarAvailable = true;
- }
- }
- mConfig = new SystemBarConfig(activity, mStatusBarAvailable, mNavBarAvailable);
- // device might not have virtual navigation keys
- if (!mConfig.hasNavigtionBar()) {
- mNavBarAvailable = false;
- }
- if (mStatusBarAvailable) {
- setupStatusBarView(activity, decorViewGroup);
- }
- if (mNavBarAvailable) {
- setupNavBarView(activity, decorViewGroup);
- }
- }
- /**
- * Enable tinting of the system status bar.
- *
- * If the platform is running Jelly Bean or earlier, or translucent system
- * UI modes have not been enabled in either the theme or via window flags,
- * then this method does nothing.
- *
- * @param enabled True to enable tinting, false to disable it (default).
- */
- public void setStatusBarTintEnabled(boolean enabled) {
- mStatusBarTintEnabled = enabled;
- if (mStatusBarAvailable) {
- mStatusBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);
- }
- }
- /**
- * Enable tinting of the system navigation bar.
- *
- * If the platform does not have soft navigation keys, is running Jelly Bean
- * or earlier, or translucent system UI modes have not been enabled in either
- * the theme or via window flags, then this method does nothing.
- *
- * @param enabled True to enable tinting, false to disable it (default).
- */
- public void setNavigationBarTintEnabled(boolean enabled) {
- mNavBarTintEnabled = enabled;
- if (mNavBarAvailable) {
- mNavBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);
- }
- }
- /**
- * Apply the specified color tint to all system UI bars.
- *
- * @param color The color of the background tint.
- */
- public void setTintColor(int color) {
- setStatusBarTintColor(color);
- setNavigationBarTintColor(color);
- }
- /**
- * Apply the specified drawable or color resource to all system UI bars.
- *
- * @param res The identifier of the resource.
- */
- public void setTintResource(int res) {
- setStatusBarTintResource(res);
- setNavigationBarTintResource(res);
- }
- /**
- * Apply the specified drawable to all system UI bars.
- *
- * @param drawable The drawable to use as the background, or null to remove it.
- */
- public void setTintDrawable(Drawable drawable) {
- setStatusBarTintDrawable(drawable);
- setNavigationBarTintDrawable(drawable);
- }
- /**
- * Apply the specified alpha to all system UI bars.
- *
- * @param alpha The alpha to use
- */
- public void setTintAlpha(float alpha) {
- setStatusBarAlpha(alpha);
- setNavigationBarAlpha(alpha);
- }
- /**
- * Apply the specified color tint to the system status bar.
- *
- * @param color The color of the background tint.
- */
- public void setStatusBarTintColor(int color) {
- if (mStatusBarAvailable) {
- mStatusBarTintView.setBackgroundColor(color);
- }
- }
- /**
- * Apply the specified drawable or color resource to the system status bar.
- *
- * @param res The identifier of the resource.
- */
- public void setStatusBarTintResource(int res) {
- if (mStatusBarAvailable) {
- mStatusBarTintView.setBackgroundResource(res);
- }
- }
- /**
- * Apply the specified drawable to the system status bar.
- *
- * @param drawable The drawable to use as the background, or null to remove it.
- */
- @SuppressWarnings("deprecation")
- public void setStatusBarTintDrawable(Drawable drawable) {
- if (mStatusBarAvailable) {
- mStatusBarTintView.setBackgroundDrawable(drawable);
- }
- }
- /**
- * Apply the specified alpha to the system status bar.
- *
- * @param alpha The alpha to use
- */
- @TargetApi(11)
- public void setStatusBarAlpha(float alpha) {
- if (mStatusBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
- mStatusBarTintView.setAlpha(alpha);
- }
- }
- /**
- * Apply the specified color tint to the system navigation bar.
- *
- * @param color The color of the background tint.
- */
- public void setNavigationBarTintColor(int color) {
- if (mNavBarAvailable) {
- mNavBarTintView.setBackgroundColor(color);
- }
- }
- /**
- * Apply the specified drawable or color resource to the system navigation bar.
- *
- * @param res The identifier of the resource.
- */
- public void setNavigationBarTintResource(int res) {
- if (mNavBarAvailable) {
- mNavBarTintView.setBackgroundResource(res);
- }
- }
- /**
- * Apply the specified drawable to the system navigation bar.
- *
- * @param drawable The drawable to use as the background, or null to remove it.
- */
- @SuppressWarnings("deprecation")
- public void setNavigationBarTintDrawable(Drawable drawable) {
- if (mNavBarAvailable) {
- mNavBarTintView.setBackgroundDrawable(drawable);
- }
- }
- /**
- * Apply the specified alpha to the system navigation bar.
- *
- * @param alpha The alpha to use
- */
- @TargetApi(11)
- public void setNavigationBarAlpha(float alpha) {
- if (mNavBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
- mNavBarTintView.setAlpha(alpha);
- }
- }
- /**
- * Get the system bar configuration.
- *
- * @return The system bar configuration for the current device configuration.
- */
- public SystemBarConfig getConfig() {
- return mConfig;
- }
- /**
- * Is tinting enabled for the system status bar?
- *
- * @return True if enabled, False otherwise.
- */
- public boolean isStatusBarTintEnabled() {
- return mStatusBarTintEnabled;
- }
- /**
- * Is tinting enabled for the system navigation bar?
- *
- * @return True if enabled, False otherwise.
- */
- public boolean isNavBarTintEnabled() {
- return mNavBarTintEnabled;
- }
- private void setupStatusBarView(Context context, ViewGroup decorViewGroup) {
- mStatusBarTintView = new View(context);
- LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getStatusBarHeight());
- params.gravity = Gravity.TOP;
- if (mNavBarAvailable && !mConfig.isNavigationAtBottom()) {
- params.rightMargin = mConfig.getNavigationBarWidth();
- }
- mStatusBarTintView.setLayoutParams(params);
- mStatusBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);
- mStatusBarTintView.setVisibility(View.GONE);
- decorViewGroup.addView(mStatusBarTintView);
- }
- private void setupNavBarView(Context context, ViewGroup decorViewGroup) {
- mNavBarTintView = new View(context);
- LayoutParams params;
- if (mConfig.isNavigationAtBottom()) {
- params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getNavigationBarHeight());
- params.gravity = Gravity.BOTTOM;
- } else {
- params = new LayoutParams(mConfig.getNavigationBarWidth(), LayoutParams.MATCH_PARENT);
- params.gravity = Gravity.RIGHT;
- }
- mNavBarTintView.setLayoutParams(params);
- mNavBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);
- mNavBarTintView.setVisibility(View.GONE);
- decorViewGroup.addView(mNavBarTintView);
- }
- /**
- * Class which describes system bar sizing and other characteristics for the current
- * device configuration.
- *
- */
- public static class SystemBarConfig {
- private static final String STATUS_BAR_HEIGHT_RES_NAME = "status_bar_height";
- private static final String NAV_BAR_HEIGHT_RES_NAME = "navigation_bar_height";
- private static final String NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME = "navigation_bar_height_landscape";
- private static final String NAV_BAR_WIDTH_RES_NAME = "navigation_bar_width";
- private static final String SHOW_NAV_BAR_RES_NAME = "config_showNavigationBar";
- private final boolean mTranslucentStatusBar;
- private final boolean mTranslucentNavBar;
- private final int mStatusBarHeight;
- private final int mActionBarHeight;
- private final boolean mHasNavigationBar;
- private final int mNavigationBarHeight;
- private final int mNavigationBarWidth;
- private final boolean mInPortrait;
- private final float mSmallestWidthDp;
- private SystemBarConfig(Activity activity, boolean translucentStatusBar, boolean traslucentNavBar) {
- Resources res = activity.getResources();
- mInPortrait = (res.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT);
- mSmallestWidthDp = getSmallestWidthDp(activity);
- mStatusBarHeight = getInternalDimensionSize(res, STATUS_BAR_HEIGHT_RES_NAME);
- mActionBarHeight = getActionBarHeight(activity);
- mNavigationBarHeight = getNavigationBarHeight(activity);
- mNavigationBarWidth = getNavigationBarWidth(activity);
- mHasNavigationBar = (mNavigationBarHeight > 0);
- mTranslucentStatusBar = translucentStatusBar;
- mTranslucentNavBar = traslucentNavBar;
- }
- @TargetApi(14)
- private int getActionBarHeight(Context context) {
- int result = 0;
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
- TypedValue tv = new TypedValue();
- context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);
- result = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());
- }
- return result;
- }
- @TargetApi(14)
- private int getNavigationBarHeight(Context context) {
- Resources res = context.getResources();
- int result = 0;
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
- if (hasNavBar(context)) {
- String key;
- if (mInPortrait) {
- key = NAV_BAR_HEIGHT_RES_NAME;
- } else {
- key = NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME;
- }
- return getInternalDimensionSize(res, key);
- }
- }
- return result;
- }
- @TargetApi(14)
- private int getNavigationBarWidth(Context context) {
- Resources res = context.getResources();
- int result = 0;
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
- if (hasNavBar(context)) {
- return getInternalDimensionSize(res, NAV_BAR_WIDTH_RES_NAME);
- }
- }
- return result;
- }
- @TargetApi(14)
- private boolean hasNavBar(Context context) {
- Resources res = context.getResources();
- int resourceId = res.getIdentifier(SHOW_NAV_BAR_RES_NAME, "bool", "android");
- if (resourceId != 0) {
- boolean hasNav = res.getBoolean(resourceId);
- // check override flag (see static block)
- if ("1".equals(sNavBarOverride)) {
- hasNav = false;
- } else if ("0".equals(sNavBarOverride)) {
- hasNav = true;
- }
- return hasNav;
- } else { // fallback
- return !ViewConfiguration.get(context).hasPermanentMenuKey();
- }
- }
- private int getInternalDimensionSize(Resources res, String key) {
- int result = 0;
- int resourceId = res.getIdentifier(key, "dimen", "android");
- if (resourceId > 0) {
- result = res.getDimensionPixelSize(resourceId);
- }
- return result;
- }
- @SuppressLint("NewApi")
- private float getSmallestWidthDp(Activity activity) {
- DisplayMetrics metrics = new DisplayMetrics();
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
- activity.getWindowManager().getDefaultDisplay().getRealMetrics(metrics);
- } else {
- // TODO this is not correct, but we don't really care pre-kitkat
- activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
- }
- float widthDp = metrics.widthPixels / metrics.density;
- float heightDp = metrics.heightPixels / metrics.density;
- return Math.min(widthDp, heightDp);
- }
- /**
- * Should a navigation bar appear at the bottom of the screen in the current
- * device configuration? A navigation bar may appear on the right side of
- * the screen in certain configurations.
- *
- * @return True if navigation should appear at the bottom of the screen, False otherwise.
- */
- public boolean isNavigationAtBottom() {
- return (mSmallestWidthDp >= 600 || mInPortrait);
- }
- /**
- * Get the height of the system status bar.
- *
- * @return The height of the status bar (in pixels).
- */
- public int getStatusBarHeight() {
- return mStatusBarHeight;
- }
- /**
- * Get the height of the action bar.
- *
- * @return The height of the action bar (in pixels).
- */
- public int getActionBarHeight() {
- return mActionBarHeight;
- }
- /**
- * Does this device have a system navigation bar?
- *
- * @return True if this device uses soft key navigation, False otherwise.
- */
- public boolean hasNavigtionBar() {
- return mHasNavigationBar;
- }
- /**
- * Get the height of the system navigation bar.
- *
- * @return The height of the navigation bar (in pixels). If the device does not have
- * soft navigation keys, this will always return 0.
- */
- public int getNavigationBarHeight() {
- return mNavigationBarHeight;
- }
- /**
- * Get the width of the system navigation bar when it is placed vertically on the screen.
- *
- * @return The width of the navigation bar (in pixels). If the device does not have
- * soft navigation keys, this will always return 0.
- */
- public int getNavigationBarWidth() {
- return mNavigationBarWidth;
- }
- /**
- * Get the layout inset for any system UI that appears at the top of the screen.
- *
- * @param withActionBar True to include the height of the action bar, False otherwise.
- * @return The layout inset (in pixels).
- */
- public int getPixelInsetTop(boolean withActionBar) {
- return (mTranslucentStatusBar ? mStatusBarHeight : 0) + (withActionBar ? mActionBarHeight : 0);
- }
- /**
- * Get the layout inset for any system UI that appears at the bottom of the screen.
- *
- * @return The layout inset (in pixels).
- */
- public int getPixelInsetBottom() {
- if (mTranslucentNavBar && isNavigationAtBottom()) {
- return mNavigationBarHeight;
- } else {
- return 0;
- }
- }
- /**
- * Get the layout inset for any system UI that appears at the right of the screen.
- *
- * @return The layout inset (in pixels).
- */
- public int getPixelInsetRight() {
- if (mTranslucentNavBar && !isNavigationAtBottom()) {
- return mNavigationBarWidth;
- } else {
- return 0;
- }
- }
- }
- }
引用自:https://github.com/jgilfelt/SystemBarTint
代码复制进你的项目即可,好了,这些工作完成之后我们来看下效果:
貌似已经达到效果了,但仔细观察,好像标题栏被提上去了,就是说APP界面全屏了,状态了盖在了APP上,恩,这并非我们想要的效果,那如何将界面从状态栏下部开始呢,只需要在Activity的布局文件最外层控件加上一个属性:
android:fitsSystemWindows="true"就可以啦!看下效果:
OK,大功告成!
PS:在使用过程中发现了一些问题,使用以上方法对单个Activity有效,但是对继承了TabActivity的导航页怎么办呢?假如MainActivity继承了TabActivity,Tab1Activity、Tab2Activity、Tab3Activity是三个子项,那么设置状态栏的代码需写在MainActivity中,而 android:fitsSystemWindows="true"需写在三个子Activity的xml布局文件中,这样设置后仍然有问题,就是进入应用后首页也就是Tab1Activity没有问题,而Tab2Activity、Tab3Activity却没达到效果,它们的效果相当于未加android:fitsSystemWindows="true"时的效果,期初我怀疑是Activity不同的原因,因此我把Tab1Activity和Tab3Activity调了下位置,结果Tab3Activity成为首页后正常,而Tab1Activity又不正常了,百思不得姐,最后实在没办法,就在Tab2Activity、Tab3Activity的OnCreate方法中加了几句代码:
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- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
- ((LinearLayout)findViewById(R.id.ll)).setPadding(0, SysUtils.getStatusHeight(this), 0,0);
- }
意思是,先求出状态栏高度,然后设置最外层控件的PaddingTop值为状态栏高度,结果正好达到效果,至于为什么只有首页Activity可以达到效果,而后面的子项无法达到效果,本人也在郁闷中,有知道的朋友可以分享下!
状态栏高度算法:
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- /**
- * 状态栏高度算法
- * @param activity
- * @return
- */
- public static int getStatusHeight(Activity activity){
- int statusHeight = 0;
- Rect localRect = new Rect();
- activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(localRect);
- statusHeight = localRect.top;
- if (0 == statusHeight){
- Class<?> localClass;
- try {
- localClass = Class.forName("com.android.internal.R$dimen");
- Object localObject = localClass.newInstance();
- int i5 = Integer.parseInt(localClass.getField("status_bar_height").get(localObject).toString());
- statusHeight = activity.getResources().getDimensionPixelSize(i5);
- } catch (ClassNotFoundException e) {
- e.printStackTrace();
- } catch (IllegalAccessException e) {
- e.printStackTrace();
- } catch (InstantiationException e) {
- e.printStackTrace();
- } catch (NumberFormatException e) {
- e.printStackTrace();
- } catch (IllegalArgumentException e) {
- e.printStackTrace();
- } catch (SecurityException e) {
- e.printStackTrace();
- } catch (NoSuchFieldException e) {
- e.printStackTrace();
- }
- }
- return statusHeight;
- }