public class FullScreenManager {

    /**
     * 獲取狀態(tài)欄高度
     * @param activity
     * @return
     */
    public static int getStatusBarHeight(Activity activity) {
        Resources resources = activity.getResources();
        int resourceId = resources.getIdentifier("status_bar_height", "dimen", "android");
        int height = resources.getDimensionPixelSize(resourceId);
        return height;
    }

    /**
     * 獲取底部虛擬導(dǎo)航欄高度
     * @param activity
     * @return
     */
    public static int getNavigationBarHeight(Activity activity) {
        Resources resources = activity.getResources();
        int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
        int height = resources.getDimensionPixelSize(resourceId);
        return height;
    }

    /**
     * 非全面屏下 虛擬按鍵是否打開(kāi)
     * @param activity
     * @return
     */
    public static boolean isNavigationBarShown(Activity activity){
        //虛擬鍵的view,為空或者不可見(jiàn)時(shí)是隱藏狀態(tài)
        View view  = activity.findViewById(android.R.id.navigationBarBackground);
        if(view == null){
            return false;
        }
        int visible = view.getVisibility();
        if(visible == View.GONE || visible == View.INVISIBLE){
            return false ;
        }else{
            return true;
        }
    }
}