Service启动悬浮窗口

不念不忘少年蓝@ 2022-03-19 10:24 176阅读 0赞

public class MainActivity extends Activity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
        }
    
        @Override
        protected void onResume() {
            super.onResume();
            startService(new Intent().setClass(getApplicationContext(), MyService.class));
            finish();
        }
    
        public static class MyService extends Service{
    
            @Nullable
            @Override
            public IBinder onBind(Intent intent) {
                return null;
            }
    
            @Override
            public int onStartCommand(Intent intent, int flags, int startId) {
                getOverlayPermission();
                initView();
                return super.onStartCommand(intent, flags, startId);
            }
    
            void initView(){
                WindowManager wm = (WindowManager)getSystemService(Context.WINDOW_SERVICE);
                Button bt = new Button(this);
                bt.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
                bt.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
                bt.setText("float button");
                bt.setTextSize(20);
                WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
                lp.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
                lp.gravity = Gravity.CENTER;
                lp.width = WindowManager.LayoutParams.WRAP_CONTENT;
                lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
                lp.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
                wm.addView(bt,lp);
    
            }
    
            private void getOverlayPermission() {
                Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
                intent.setData(Uri.parse("package:" + getPackageName()));
                startActivity(intent); }
    
    }
    }