【Android】Service中判断当前是否全屏（状态栏是否隐藏）

骑猪看日落 2022-08-20 14:16 345阅读 0赞

转载请注明来源：[http://blog.csdn.net/pur\_e/article/details/50781412][http_blog.csdn.net_pur_e_article_details_50781412]

业务需要，要在后台Service中判断当前界面是否全屏，感谢Google，帮我找到了一个解决方式：[is it possible to detect when any application is in full screen in android?][is it possible to detect when any application is in full screen in android]，现将方法研究并记录一下。

## 1.原理 ##

上面的回答中，创建了一个overlay的不可见View，靠在窗口上方，通过调用View.getLocationOnScreen判断其中Y轴位置的值，来判断是否全屏，经过测试，完全可行。

## 2.测试 ##

*  先上测试图：  
    ![这里写图片描述][Center]  
    可以明显看到，创建的View确实是会随状态栏隐藏和显示而上下移动的。
 *  测试代码：

public class MyService extends Service { 
        private View mCheckFullScreenView = null;
        @Override
        public void onCreate() {
            super.onCreate();
            Context ctx = getApplicationContext();
            mCheckFullScreenView = new View(ctx);
            mCheckFullScreenView.setBackgroundColor(Color.RED);
            WindowManager windowManager = (WindowManager)ctx.getSystemService(WINDOW_SERVICE);
            WindowManager.LayoutParams params = new WindowManager.LayoutParams();
            //创建非模态、不可碰触
            params.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                    |WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
            //放在左上角
            params.gravity = Gravity.START | Gravity.TOP;
            params.height = 50;
            params.width = 50;
            //设置弹出View类型
            params.type = WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY;
    
            windowManager.addView(mCheckFullScreenView, params);
        }
    }
    
    
    public class MainActivity extends Activity implements View.OnTouchListener{ 
    
        private boolean isFullScreen = false;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main_activity);
            View rootView = findViewById(R.id.root);
            Intent intent = new Intent(this, MyService.class);
            startService(intent);
    
            rootView.setOnTouchListener(this);
    
        }
    
    
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            Window window  = getWindow();
            if(isFullScreen){
                //设置非全屏
                window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
    
            }else{
                //设置全屏
                window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
            }
            isFullScreen = !isFullScreen;
            return false;
        }
    }

*  那么其他弹出类型也会如此吗，做了下测试：

TYPE_SYSTEM_OVERLAY：可以
        TYPE_SYSTEM_ERROR：可以
        TYPE_PHONE：可以
        TYPE_SYSTEM_ALERT：不可以
        TYPE_TOAST：不可以

*  PS：小米的MIUI等自定义的ROM，虽然默认不会显示弹屏，但这个功能是可用的。也就是说这里的不显示，其实是隐藏，而不是直接禁止。

[http_blog.csdn.net_pur_e_article_details_50781412]: http://blog.csdn.net/pur_e/article/details/50781412
[is it possible to detect when any application is in full screen in android]: http://stackoverflow.com/questions/18049543/is-it-possible-to-detect-when-any-application-is-in-full-screen-in-android
[Center]: /images/20220731/ad53c61740ee426db36fc369227e8d89.png