获取状态栏高度

一、方式一

Android31不支持

private static int getStatusBarHeight(Context context) {
      // 获得状态栏高度
      int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
      if (resourceId > 0) {
        //注意：如果resourceId为0则会崩溃；
         return context.getResources().getDimensionPixelSize(resourceId);
      }
      return 0;
   }

二、方式二

    private int getStatusBarHeight() {
        int statusBarHeight = 0;
        try {
            Class<?> c = Class.forName("com.android.internal.R$dimen");
            Object object = c.newInstance();
            Field field = c.getField("status_bar_height");
            int x = (Integer) field.get(object);
            statusBarHeight = getResources().getDimensionPixelSize(x);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return statusBarHeight;
    }

三、方式三

getWindow().getDecorView().setOnApplyWindowInsetsListener((v, insets) -> {
    int statuBarHeight = insets.getStableInsetTop();
    return insets;
});