4.4特性

沉浸式体验

4.4以上的系统支持实现隐藏状态栏,导航栏实现沉浸式的效果。

单独隐藏状态栏必须在setContextView后调用

int option = View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(option);


 View.SYSTEM_UI_FLAG_FULLSCREEN,            //全屏,状态栏和导航栏不显示
            View.SYSTEM_UI_FLAG_HIDE_NAVIGATION,    //隐藏导航栏
            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN,  //全屏,状态栏会盖在布局上
            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION, 
            View.SYSTEM_UI_FLAG_LAYOUT_STABLE,
            View.SYSTEM_UI_FLAG_LOW_PROFILE,
            View.SYSTEM_UI_FLAG_VISIBLE,        //显示状态栏和导航栏
            View.SYSTEM_UI_LAYOUT_FLAGS

隐藏状态栏和导航栏

@Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
        View decorView = getWindow().getDecorView();
        int option = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_FULLSCREEN;
        decorView.setSystemUiVisibility(
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
    }

自定义 StatusBarColor

android 4.4以上的系统支持自定义statusBar的颜色也就是我们的状态栏颜色。主要是通过获取activity的 window.setStatusBarColor(color)来设置。使用的时候需要判断版本号4.4以上的系统才能这样做。

这里是一个工具类

/**
 * Created by Jaeger on 16/2/14.
 * 

* Email: [email protected] * GitHub: https://github.com/laobie */ public class StatusBarUtil { public static final int DEFAULT_STATUS_BAR_ALPHA = 112; private static final int TAG_KEY_HAVE_SET_OFFSET = -123; private static final int FAKE_STATUS_BAR_VIEW_ID = R.id.statusbarutil_fake_status_bar_view; /** * 设置状态栏颜色 * * @param activity 需要设置的 activity * @param color 状态栏颜色值 */ public static void setColor(Activity activity, int color) { setColor(activity, color, DEFAULT_STATUS_BAR_ALPHA); } /** * 设置状态栏颜色 * * @param activity 需要设置的activity * @param color 状态栏颜色值 * @param statusBarAlpha 状态栏透明度 */ public static void setColor(Activity activity, int color, int statusBarAlpha) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); activity.getWindow() .clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); activity.getWindow() .setStatusBarColor(calculateStatusColor(color, statusBarAlpha)); } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); // 生成一个状态栏大小的矩形 View statusView = createStatusBarView(activity, color, statusBarAlpha); // 添加 statusView 到布局中 ViewGroup decorView = (ViewGroup) activity.getWindow() .getDecorView(); decorView.addView(statusView); setRootView(activity); } } /** * 设置状态栏颜色 * * @param window 需要设置的activity * @param color 状态栏颜色值 * @param statusBarAlpha 状态栏透明度 */ public static void setColor(Fragment fragment, Window window, int color, int statusBarAlpha) { if (window == null) { return; } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); window.setStatusBarColor(calculateStatusColor(color, statusBarAlpha)); } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); // 生成一个状态栏大小的矩形 View statusView = createStatusBarView(fragment .getActivity(), color, statusBarAlpha); // 添加 statusView 到布局中 ViewGroup decorView = (ViewGroup) window.getDecorView(); decorView.addView(statusView); setRootView(fragment); } } public static void setStatusColor(Activity activity, int color) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { Window window = activity.getWindow(); window.setStatusBarColor(color); } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { ViewGroup decorView = (ViewGroup) activity.getWindow() .getDecorView(); View statusView = decorView.findViewById(R.id.status_bar_view); if (statusView == null) { // 生成一个状态栏大小的矩形 statusView = createStatusBarView(activity, color); statusView.setId(R.id.status_bar_view); // 添加 statusView 到布局中 decorView.addView(statusView); //setRootView(activity); } else { statusView.setBackgroundColor(color); } } } public static void setStatusBarFromImg(Activity activity, int color) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { Window window = activity.getWindow(); window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); window.getDecorView().setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE); window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); window.setStatusBarColor(color); } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } } public static void setStatusBarFromImg(Window window, int color) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); window.getDecorView().setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE); window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); window.setStatusBarColor(color); } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } } /** * 设置状态栏纯色 不加半透明效果 * * @param activity 需要设置的 activity * @param color 状态栏颜色值 */ public static void setColorNoTranslucent(Activity activity, int color) { setColor(activity, color, 0); } /** * 设置状态栏颜色(5.0以下无半透明效果,不建议使用) * * @param activity 需要设置的 activity * @param color 状态栏颜色值 */ public static void setColorDiff(Activity activity, int color) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); // 生成一个状态栏大小的矩形 View statusView = createStatusBarView(activity, color); // 添加 statusView 到布局中 ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView(); decorView.addView(statusView); setRootView(activity); } public static void setTranslucent(Fragment fragment, Window window) { setTranslucent(fragment, window, DEFAULT_STATUS_BAR_ALPHA); } /** * 使状态栏半透明 *

* 适用于图片作为背景的界面,此时需要图片填充到状态栏 * * @param activity 需要设置的activity */ public static void setTranslucent(Activity activity) { setTranslucent(activity, DEFAULT_STATUS_BAR_ALPHA); } /** * 使状态栏半透明 *

* 适用于图片作为背景的界面,此时需要图片填充到状态栏 * * @param activity 需要设置的activity * @param statusBarAlpha 状态栏透明度 */ public static void setTranslucent(Activity activity, int statusBarAlpha) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } setTransparent(activity); addTranslucentView(activity, statusBarAlpha); } public static void setTranslucent(Fragment fragment, Window window, int statusBarAlpha) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } setTransparent(fragment, window); addTranslucentView(fragment, window, statusBarAlpha); } /** * 设置状态栏全透明 * * @param activity 需要设置的activity */ public static void setTransparent(Activity activity) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } transparentStatusBar(activity); setRootView(activity); } public static void setTransparent(Fragment fragment, Window window) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } transparentStatusBar(window); setRootView(fragment); } /** * 使状态栏透明(5.0以上半透明效果,不建议使用) *

* 适用于图片作为背景的界面,此时需要图片填充到状态栏 * * @param activity 需要设置的activity */ public static void setTranslucentDiff(Activity activity) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { // 设置状态栏透明 activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); setRootView(activity); } } /** * 为DrawerLayout 布局设置状态栏变色 * * @param activity 需要设置的activity * @param drawerLayout DrawerLayout * @param color 状态栏颜色值 */ public static void setColorForDrawerLayout(Activity activity, DrawerLayout drawerLayout, int color) { setColorForDrawerLayout(activity, drawerLayout, color, DEFAULT_STATUS_BAR_ALPHA); } /** * 为DrawerLayout 布局设置状态栏颜色,纯色 * * @param activity 需要设置的activity * @param drawerLayout DrawerLayout * @param color 状态栏颜色值 */ public static void setColorNoTranslucentForDrawerLayout(Activity activity, DrawerLayout drawerLayout, int color) { setColorForDrawerLayout(activity, drawerLayout, color, 0); } /** * 为DrawerLayout 布局设置状态栏变色 * * @param activity 需要设置的activity * @param drawerLayout DrawerLayout * @param color 状态栏颜色值 * @param statusBarAlpha 状态栏透明度 */ public static void setColorForDrawerLayout(Activity activity, DrawerLayout drawerLayout, int color, int statusBarAlpha) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); activity.getWindow() .clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); activity.getWindow().setStatusBarColor(Color.TRANSPARENT); } else { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } // 生成一个状态栏大小的矩形 View statusBarView = createStatusBarView(activity, color); // 添加 statusBarView 到布局中 ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0); contentLayout.addView(statusBarView, 0); // 内容布局不是 LinearLayout 时,设置padding top if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) { contentLayout.getChildAt(1) .setPadding(0, getStatusBarHeight(activity), 0, 0); } // 设置属性 ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1); drawerLayout.setFitsSystemWindows(false); contentLayout.setFitsSystemWindows(false); contentLayout.setClipToPadding(true); drawer.setFitsSystemWindows(false); addTranslucentView(activity, statusBarAlpha); } /** * 为DrawerLayout 布局设置状态栏变色(5.0以下无半透明效果,不建议使用) * * @param activity 需要设置的activity * @param drawerLayout DrawerLayout * @param color 状态栏颜色值 */ public static void setColorForDrawerLayoutDiff(Activity activity, DrawerLayout drawerLayout, int color) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); // 生成一个状态栏大小的矩形 View statusBarView = createStatusBarView(activity, color); // 添加 statusBarView 到布局中 ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0); contentLayout.addView(statusBarView, 0); // 内容布局不是 LinearLayout 时,设置padding top if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) { contentLayout.getChildAt(1) .setPadding(0, getStatusBarHeight(activity), 0, 0); } // 设置属性 ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1); drawerLayout.setFitsSystemWindows(false); contentLayout.setFitsSystemWindows(false); contentLayout.setClipToPadding(true); drawer.setFitsSystemWindows(false); } } /** * 为 DrawerLayout 布局设置状态栏透明 * * @param activity 需要设置的activity * @param drawerLayout DrawerLayout */ public static void setTranslucentForDrawerLayout(Activity activity, DrawerLayout drawerLayout) { setTranslucentForDrawerLayout(activity, drawerLayout, DEFAULT_STATUS_BAR_ALPHA); } /** * 为 DrawerLayout 布局设置状态栏透明 * * @param activity 需要设置的activity * @param drawerLayout DrawerLayout */ public static void setTranslucentForDrawerLayout(Activity activity, DrawerLayout drawerLayout, int statusBarAlpha) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } setTransparentForDrawerLayout(activity, drawerLayout); addTranslucentView(activity, statusBarAlpha); } /** * 为 DrawerLayout 布局设置状态栏透明 * * @param activity 需要设置的activity * @param drawerLayout DrawerLayout */ public static void setTransparentForDrawerLayout(Activity activity, DrawerLayout drawerLayout) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); activity.getWindow() .clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); activity.getWindow().setStatusBarColor(Color.TRANSPARENT); } else { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0); // 内容布局不是 LinearLayout 时,设置padding top if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) { contentLayout.getChildAt(1) .setPadding(0, getStatusBarHeight(activity), 0, 0); } // 设置属性 ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1); drawerLayout.setFitsSystemWindows(false); contentLayout.setFitsSystemWindows(false); contentLayout.setClipToPadding(true); drawer.setFitsSystemWindows(false); } /** * 为 DrawerLayout 布局设置状态栏透明(5.0以上半透明效果,不建议使用) * * @param activity 需要设置的activity * @param drawerLayout DrawerLayout */ public static void setTranslucentForDrawerLayoutDiff(Activity activity, DrawerLayout drawerLayout) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { // 设置状态栏透明 activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); // 设置内容布局属性 ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0); contentLayout.setFitsSystemWindows(true); contentLayout.setClipToPadding(true); // 设置抽屉布局属性 ViewGroup vg = (ViewGroup) drawerLayout.getChildAt(1); vg.setFitsSystemWindows(false); // 设置 DrawerLayout 属性 drawerLayout.setFitsSystemWindows(false); } } /** * 添加半透明矩形条 * * @param activity 需要设置的 activity * @param statusBarAlpha 透明值 */ private static void addTranslucentView(Activity activity, int statusBarAlpha) { ViewGroup contentView = (ViewGroup) activity .findViewById(android.R.id.content); // 移除半透明矩形,以免叠加 if (contentView.getChildCount() > 1) { contentView.removeViewAt(1); } contentView .addView(createTranslucentStatusBarView(activity, statusBarAlpha)); } private static void addTranslucentView(Fragment fragment, Window window, int statusBarAlpha) { ViewGroup contentView = (ViewGroup) window .findViewById(android.R.id.content); if (contentView == null) { contentView = (ViewGroup) window.getDecorView(); } // 移除半透明矩形,以免叠加 if (contentView.getChildCount() > 1) { contentView.removeViewAt(1); } contentView.addView(createTranslucentStatusBarView(fragment .getActivity(), statusBarAlpha)); } /** * 生成一个和状态栏大小相同的彩色矩形条 * * @param activity 需要设置的 activity * @param color 状态栏颜色值 * @return 状态栏矩形条 */ private static View createStatusBarView(Activity activity, int color) { // 绘制一个和状态栏一样高的矩形 View statusBarView = new View(activity); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(activity)); statusBarView.setLayoutParams(params); statusBarView.setBackgroundColor(color); return statusBarView; } /** * 生成一个和状态栏大小相同的半透明矩形条 * * @param context context * @param color 状态栏颜色值 * @param alpha 透明值 * @return 状态栏矩形条 */ private static View createStatusBarView(Context context, int color, int alpha) { // 绘制一个和状态栏一样高的矩形 View statusBarView = new View(context); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(context)); statusBarView.setLayoutParams(params); statusBarView.setBackgroundColor(calculateStatusColor(color, alpha)); return statusBarView; } /** * 设置根布局参数 */ private static void setRootView(Activity activity) { ViewGroup rootView = (ViewGroup) ((ViewGroup) activity .findViewById(android.R.id.content)).getChildAt(0); if (rootView == null) { return; } rootView.setFitsSystemWindows(true); rootView.setClipToPadding(true); } /** * 设置根布局参数 */ private static void setRootView(Fragment fragment) { View view = fragment.getView(); if (view != null) { view.setFitsSystemWindows(true); if (view instanceof ViewGroup) { ((ViewGroup) view).setClipToPadding(true); } } } /** * 使状态栏透明 */ @TargetApi(Build.VERSION_CODES.KITKAT) private static void transparentStatusBar(Activity activity) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); activity.getWindow() .clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION); activity.getWindow().setStatusBarColor(Color.TRANSPARENT); } else { activity.getWindow() .addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } } /** * 使状态栏透明 */ @TargetApi(Build.VERSION_CODES.KITKAT) private static void transparentStatusBar(Window window) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION); window.setStatusBarColor(Color.TRANSPARENT); } else { window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } } /** * 创建半透明矩形 View * * @param alpha 透明值 * @return 半透明 View */ private static View createTranslucentStatusBarView(Activity activity, int alpha) { // 绘制一个和状态栏一样高的矩形 View statusBarView = new View(activity); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(activity)); statusBarView.setLayoutParams(params); statusBarView.setBackgroundColor(Color.argb(alpha, 0, 0, 0)); return statusBarView; } /** * 获取状态栏高度 * * @param context context * @return 状态栏高度 */ public static int getStatusBarHeight(Context context) { // 获得状态栏高度 int resourceId = context.getResources() .getIdentifier("status_bar_height", "dimen", "android"); return context.getResources().getDimensionPixelSize(resourceId); } /** * 计算状态栏颜色 * * @param color color值 * @param alpha alpha值 * @return 最终的状态栏颜色 */ private static int calculateStatusColor(int color, int alpha) { float a = 1 - alpha / 255f; int red = color >> 16 & 0xff; int green = color >> 8 & 0xff; int blue = color & 0xff; red = (int) (red * a + 0.5); green = (int) (green * a + 0.5); blue = (int) (blue * a + 0.5); return 0xff << 24 | red << 16 | green << 8 | blue; } /** * 设置view添加状态栏高度和设置padding,适用于图片填充到状态栏 * * @param view 需要添加padding的view * @param height 该view的原始高度,单位px */ public static void setViewAddStatusPadding(View view, int height) { if (view == null || Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } int barHeight = StatusBarUtil.getStatusBarHeight(view.getContext()); ViewGroup.LayoutParams layoutParams = view.getLayoutParams(); layoutParams.height = height + barHeight; view.setPadding(view.getPaddingLeft(), view.getPaddingTop() + barHeight, view.getPaddingRight(), view .getPaddingBottom()); view.setMinimumHeight(barHeight); } /** * 为 fragment 头部是 ImageView 的设置状态栏半透明 * * @param activity fragment 对应的 activity * @param needOffsetView 需要向下偏移的 View */ public static void setTranslucentForImageViewInFragment(Activity activity, View needOffsetView) { setTranslucentForImageViewInFragment(activity, DEFAULT_STATUS_BAR_ALPHA, needOffsetView); } /** * 为 fragment 头部是 ImageView 的设置状态栏全透明 * * @param activity fragment 对应的 activity * @param needOffsetView 需要向下偏移的 View */ public static void setTransparentForImageViewInFragment(Activity activity, View needOffsetView) { setTranslucentForImageViewInFragment(activity, 0, needOffsetView); } /** * 为 fragment 头部是 ImageView 的设置状态栏透明 * * @param activity fragment 对应的 activity * @param statusBarAlpha 状态栏透明度 * @param needOffsetView 需要向下偏移的 View */ public static void setTranslucentForImageViewInFragment(Activity activity, int statusBarAlpha, View needOffsetView) { setTranslucentForImageView(activity, statusBarAlpha, needOffsetView); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) { clearPreviousSetting(activity); } } /** * 为头部是 ImageView 的界面设置状态栏透明 * * @param activity 需要设置的activity * @param statusBarAlpha 状态栏透明度 * @param needOffsetView 需要向下偏移的 View */ public static void setTranslucentForImageView(Activity activity, int statusBarAlpha, View needOffsetView) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { return; } setTransparentForWindow(activity); addTranslucentView(activity, statusBarAlpha); if (needOffsetView != null) { Object haveSetOffset = needOffsetView .getTag(TAG_KEY_HAVE_SET_OFFSET); if (haveSetOffset != null && (Boolean) haveSetOffset) { return; } ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) needOffsetView .getLayoutParams(); layoutParams.setMargins(layoutParams.leftMargin, layoutParams.topMargin + getStatusBarHeight(activity), layoutParams.rightMargin, layoutParams.bottomMargin); needOffsetView.setTag(TAG_KEY_HAVE_SET_OFFSET, Boolean.TRUE); } } /** * 设置透明 */ private static void setTransparentForWindow(Activity activity) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { activity.getWindow().setStatusBarColor(Color.TRANSPARENT); activity.getWindow().getDecorView().setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN); } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { activity.getWindow() .setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } } @TargetApi(Build.VERSION_CODES.KITKAT) private static void clearPreviousSetting(Activity activity) { ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView(); View fakeStatusBarView = decorView .findViewById(FAKE_STATUS_BAR_VIEW_ID); if (fakeStatusBarView != null) { decorView.removeView(fakeStatusBarView); ViewGroup rootView = (ViewGroup) ((ViewGroup) activity .findViewById(android.R.id.content)).getChildAt(0); rootView.setPadding(0, 0, 0, 0); } } }

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