I want add floating icon but i received error as title. I added permisson android:name="android.permission.SYSTEM_ALERT_WINDOW in manifest. I hope to get help from comunication.
Error
/AndroidRuntime: FATAL EXCEPTION: main Process: com.dxlampro.floatingapp, PID: 7639 android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@f07c325 -- permission denied for window type 2038 at android.view.ViewRootImpl.setView(ViewRootImpl.java:789) at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:356) at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:93) ....
Bound Service
package com.unity3d.player; import android.annotation.SuppressLint; import android.app.Service; import android.content.Context; import android.content.Intent; import android.graphics.PixelFormat; import android.os.Binder; import android.os.Build; import android.os.IBinder; import android.view.Gravity; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; import androidx.annotation.Nullable; import com.dxlampro.floatingapp.R; public class FloatingMenu extends Service { private final IBinder binder = new LocalBinder(); private WindowManager.LayoutParams params; private WindowManager mWindowManager; public class LocalBinder extends Binder { public FloatingMenu getService() { return FloatingMenu.this; } } @Override public void onCreate() { Toast.makeText(this.getBaseContext(),"On Create Service",Toast.LENGTH_SHORT).show(); super.onCreate(); } @Override public void onDestroy() { Toast.makeText(this.getBaseContext(),"On Destroy Service",Toast.LENGTH_SHORT).show(); super.onDestroy(); } @Nullable @Override public IBinder onBind(Intent intent) { return binder; } public void startFloating(){ View mFloatingView = LayoutInflater.from(this).inflate(R.layout.floating_view, null); int LAYOUT_FLAG; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY; params = new WindowManager.LayoutParams( WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, LAYOUT_FLAG, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT); } else { LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_PHONE; params = new WindowManager.LayoutParams( WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, LAYOUT_FLAG, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT); } params.gravity = Gravity.CENTER; //Initially view will be added to top-left corner params.x = 0; params.y = 100; //Add the view to the window mWindowManager = (WindowManager) getSystemService(WINDOW_SERVICE); mWindowManager.addView(mFloatingView, params); } } MainActivity
package com.dxlampro.floatingapp; import androidx.appcompat.app.AppCompatActivity; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.os.Build; import android.os.Bundle; import android.os.IBinder; import com.unity3d.player.FloatingMenu; public class MainActivity extends AppCompatActivity { private FloatingMenu myService; private boolean isBound; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Intent intent = new Intent(this,FloatingMenu.class); bindService(intent, connection, Context.BIND_AUTO_CREATE); } private ServiceConnection connection = new ServiceConnection() { // Phương thức này được hệ thống gọi khi kết nối tới service bị lỗi @Override public void onServiceDisconnected(ComponentName name) { isBound = false; } @Override public void onServiceConnected(ComponentName name, IBinder service) { FloatingMenu.LocalBinder binder = (FloatingMenu.LocalBinder) service; myService = binder.getService(); myService.startFloating(); isBound = true; } }; @Override protected void onPause() { super.onPause(); isBound = false; } } 
