Android开发之获取状态栏-BarUtils

在开发中，经常会需要会各种栏的设置。比如，获取状态栏高度，对状态栏进行隐藏等，为此，对于这些操作整理了下

目录

状态栏

获取状态栏高度

public static int getStatusBarHeight() {
        Resources resources = Utils.getApp().getResources();
        int resourceId = resources.getIdentifier("status_bar_height", "dimen", "android");
        return resources.getDimensionPixelSize(resourceId);
}

设置状态栏是否可见

public static void setStatusBarVisibility(@NonNull final Activity activity,final boolean isVisible) {
       setStatusBarVisibility(activity.getWindow(), isVisible);
}
public static void setStatusBarVisibility(@NonNull final Window window, final boolean isVisible) {
       if (isVisible) { 
           window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
       } else {
           window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
       }
}

设置状态栏模式

public static void setStatusBarLightMode(@NonNull final Activity activity,final boolean isLightMode) {
        setStatusBarLightMode(activity.getWindow(), isLightMode);
}

public static void setStatusBarLightMode(@NonNull final Window window,final boolean isLightMode) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            View decorView = window.getDecorView();
            if (decorView != null) {
                int vis = decorView.getSystemUiVisibility();
                if (isLightMode) {
                    window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
                    vis |= View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
                } else {
                    vis &= ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
                }
                decorView.setSystemUiVisibility(vis);
            }
        }
}

将view的topMargin加上状态栏高度

//getStatusBarHeight()方法见文章开头

private static final int    TAG_OFFSET    = -123;
public static void addMarginTopEqualStatusBarHeight(@NonNull View view) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return;
        Object haveSetOffset = view.getTag(TAG_OFFSET);
        if (haveSetOffset != null && (Boolean) haveSetOffset) return;
        MarginLayoutParams layoutParams = (MarginLayoutParams) view.getLayoutParams();
        layoutParams.setMargins(layoutParams.leftMargin,
                layoutParams.topMargin + getStatusBarHeight(),
                layoutParams.rightMargin,
                layoutParams.bottomMargin);
        view.setTag(TAG_OFFSET, true);
}

将view的topMargin减去状态栏高度

//getStatusBarHeight()方法见文章开头

private static final int    TAG_OFFSET    = -123;
public static void subtractMarginTopEqualStatusBarHeight(@NonNull View view) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return;
        Object haveSetOffset = view.getTag(TAG_OFFSET);
        if (haveSetOffset == null || !(Boolean) haveSetOffset) return;
        MarginLayoutParams layoutParams = (MarginLayoutParams) view.getLayoutParams();
        layoutParams.setMargins(layoutParams.leftMargin,
                layoutParams.topMargin - getStatusBarHeight(),
                layoutParams.rightMargin,
                layoutParams.bottomMargin);
        view.setTag(TAG_OFFSET, false);
}

设置状态栏颜色

private static final int    DEFAULT_ALPHA = 112;
public static void setStatusBarColor(@NonNull final Activity activity, @ColorInt final int color) {
        setStatusBarColor(activity, color, DEFAULT_ALPHA, false);
}

public static void setStatusBarColor(@NonNull final Activity activity, @ColorInt final int color,@IntRange(from = 0, to = 255) final int alpha) {
        setStatusBarColor(activity, color, alpha, false);
}

public static void setStatusBarColor(@NonNull final Activity activity,@ColorInt final int color,@IntRange(from = 0, to = 255) final int alpha,final boolean isDecor) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return;
        hideAlphaView(activity);
        transparentStatusBar(activity);
        addStatusBarColor(activity, color, alpha, isDecor);
}

private static final String TAG_COLOR     = "TAG_COLOR";
private static void hideColorView(final Activity activity) {
        ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();
        View fakeStatusBarView = decorView.findViewWithTag(TAG_COLOR);
        if (fakeStatusBarView == null) return;
        fakeStatusBarView.setVisibility(View.GONE);
}

private static void transparentStatusBar(final Activity activity) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return;
        Window window = activity.getWindow();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            int option = View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
            window.getDecorView().setSystemUiVisibility(option);
            window.setStatusBarColor(Color.TRANSPARENT);
        } else {
            window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        }
}

private static void addStatusBarColor(final Activity activity,
      final int color,final int alpha,boolean isDecor) {
        ViewGroup parent = isDecor ?
                (ViewGroup) activity.getWindow().getDecorView() :
                (ViewGroup) activity.findViewById(android.R.id.content);
        View fakeStatusBarView = parent.findViewWithTag(TAG_COLOR);
        if (fakeStatusBarView != null) {
            if (fakeStatusBarView.getVisibility() == View.GONE) {
                fakeStatusBarView.setVisibility(View.VISIBLE);
            }
            fakeStatusBarView.setBackgroundColor(getStatusBarColor(color, alpha));
        } else {
            parent.addView(createColorStatusBarView(parent.getContext(), color, alpha));
        }
    }


private static int getStatusBarColor(final int color, final int alpha) {
        if (alpha == 0) return color;
        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 Color.argb(255, red, green, blue);
 }

private static View createColorStatusBarView(final Context context,
         final int color,final int alpha) {
        View statusBarView = new View(context);
        statusBarView.setLayoutParams(new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight()));
        statusBarView.setBackgroundColor(getStatusBarColor(color, alpha));
        statusBarView.setTag(TAG_COLOR);
        return statusBarView;
}

获取ActionBar高度

public static int getActionBarHeight() {
        TypedValue tv = new TypedValue();
        if (Utils.getApp().getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
            return TypedValue.complexToDimensionPixelSize(
                    tv.data, Utils.getApp().getResources().getDisplayMetrics()
            );
        }
        return 0;
}

消息栏

设置消息栏是否可见

//

@RequiresPermission(EXPAND_STATUS_BAR)
public static void setNotificationBarVisibility(final boolean isVisible) {
        String methodName;
        if (isVisible) {
            methodName = (Build.VERSION.SDK_INT <= 16) ? "expand" : "expandNotificationsPanel";
        } else {
            methodName = (Build.VERSION.SDK_INT <= 16) ? "collapse" : "collapsePanels";
        }
        invokePanels(methodName);
}

private static void invokePanels(final String methodName) {
        try {
            @SuppressLint("WrongConstant")
            Object service = Utils.getApp().getSystemService("statusbar");
            @SuppressLint("PrivateApi")
            Class statusBarManager = Class.forName("android.app.StatusBarManager");
            Method expand = statusBarManager.getMethod(methodName);
            expand.invoke(service);
        } catch (Exception e) {
            e.printStackTrace();
        }
}

导航栏

获取导航栏高度

public static int getNavBarHeight() {
        Resources res = Utils.getApp().getResources();
        int resourceId = res.getIdentifier("navigation_bar_height", "dimen", "android");
        if (resourceId != 0) {
            return res.getDimensionPixelSize(resourceId);
        } else {
            return 0;
        }
}

设置导航栏是否可见

public static void setNavBarVisibility(@NonNull final Window window, boolean isVisible) {
        if (isVisible) {
            window.clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
        } else {
            window.addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
            View decorView = window.getDecorView();
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                int visibility = decorView.getSystemUiVisibility();
                decorView.setSystemUiVisibility(visibility & ~View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
            }
        }
}

获取导航栏是否可见

public static boolean isNavBarVisible(@NonNull final Window window) {
        boolean isNoLimits = (window.getAttributes().flags
                & WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS) != 0;
        if (isNoLimits) return false;
        View decorView = window.getDecorView();
        int visibility = decorView.getSystemUiVisibility();
        return (visibility & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0;
}

设置沉浸式导航栏

@TargetApi(Build.VERSION_CODES.KITKAT)
public static void setNavBarImmersive(@NonNull final Window window) {
        View decorView = window.getDecorView();        window.clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
        int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
        decorView.setSystemUiVisibility(uiOptions);
}