Android通过DecorView获取状态栏、标题栏、底部导航栏的高度

Android通过DecorView获取状态栏、标题栏、底部导航栏的高度

通过DecorView获取状态栏的高度

  /**该方法不能在初始化的时候用 
     * 获取状态栏高度
     */
    public static int getStatusBarHeight(Activity context) {
        int height;
      
        View decorView = context.getWindow().getDecorView();
         Rect rect = new Rect();
          // Window可视区域坐标(不包含状态栏与底部导航栏高度)
         decorView.getWindowVisibleDisplayFrame(rect);
         height = rect.top;
        return height;
    }

通过DecorView获取底部导航栏的高度

   /**该方法不能在初始化的时候用 
     * 获取导航栏高度
     */
    public static int getNavBarHeight(Activity context) {
        int height;
        Display display = context.getWindow().getWindowManager().getDefaultDisplay();
        Point point = new Point();
        display.getRealSize(point);

        View decorView = context.getWindow().getDecorView();
        Configuration conf = context.getResources().getConfiguration();
        if (Configuration.ORIENTATION_LANDSCAPE == conf.orientation) {
            View contentView = decorView.findViewById(android.R.id.content);
            height = Math.abs(point.x - contentView.getWidth());
        } else {
            Rect rect = new Rect();
             // Window可视区域坐标(不包含状态栏与底部导航栏高度)
            decorView.getWindowVisibleDisplayFrame(rect);
            height = Math.abs(rect.bottom - point.y);
        }

        return height;
    }

获取标题栏高度

 /**该方法不能在初始化的时候用 
     * 获取标题栏高度
     */
   public static int getTitleBarHeight(Activity context) {
        int height;
        View decorView = context.getWindow().getDecorView();
            Rect rect = new Rect();
             // Window可视区域坐标(不包含状态栏与底部导航栏高度)
            decorView.getWindowVisibleDisplayFrame(rect);
            
			int viewTop =  context.getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
           
            height = Math.abs(rect.top-viewTop );
            
        return height;
    }

获取屏幕的宽高：

public final class ScreenUtils {
    /**
     * Return the width of screen, in pixel.
     *
     * @return the width of screen, in pixel
     */
    public static int getScreenWidth(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        if (wm == null) return -1;
        Point point = new Point();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            wm.getDefaultDisplay().getRealSize(point);
        } else {
            wm.getDefaultDisplay().getSize(point);
        }
        return point.x;
    }
    /**
     * Return the height of screen, in pixel.
     *
     * @return the height of screen, in pixel
     */
    public static int getScreenHeight(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        if (wm == null) return -1;
        Point point = new Point();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            wm.getDefaultDisplay().getRealSize(point);
        } else {
            wm.getDefaultDisplay().getSize(point);
        }
        return point.y;
    }
}