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问题:
I trying to create a view that is above other applications:
WindowManager.LayoutParams paramsDirectorView = new WindowManager.LayoutParams( WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
I have looked in other responses and found the following things for "drawing over applications":
- I have android.permission.SYSTEM_ALERT_WINDOW in the manifest
- I am doing the Settings.canDrawOverlays(this) check which comes back true.
- I have done everything located here permission denied for window type
I am still getting "-- permission denied for window type 2038" error. As of now I am using TYPE_PHONE and it works, but it is deprecated and says to use TYPE_APPLICATION_OVERLAY. Can some one follow up on this as the TYPE_PHONE answer is not truly a resolution but a "patch work" solution that is deprecated in Android O.
I am running on Android 7.1.2
android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@1f47e89 -- permission denied for window type 2038 at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3344) at android.app.ActivityThread.-wrap21(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1583) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6121) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779) Caused by: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@1f47e89 -- permission denied for window type 2038 at android.view.ViewRootImpl.setView(ViewRootImpl.java:703) at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:342) at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:93) at HeadService.TwoViewManager.(TwoViewManager.java:99) at HeadService.UIHeadService.onStartCommand(UIHeadService.java:65) at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3327) at android.app.ActivityThread.-wrap21(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1583) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6121) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
回答1:
I had the exactly same issue. I guess you should differentiate the target (before and after Oreo)
int LAYOUT_FLAG; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY; } 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_TOUCHABLE | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
回答2:
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
I had the exactly same issue in service class(before and after Marshmallow).
if (Build.VERSION.SDK_INT >= 23) { if (!Settings.canDrawOverlays(this)) { Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName())); startActivityForResult(intent, 1234); } } else { startService(new Intent(SplashActivity.this, CheckServicesForApps.class)); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == 1234) { startService(new Intent(SplashActivity.this, CheckServicesForApps.class)); } } public class CheckServicesForApps extends Service { private Context context = null; @Override public void onCreate() { super.onCreate(); ImageView imageView = new ImageView(context); imageView.setVisibility(View.GONE); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { try { windowManager = (WindowManager)getSystemService(WINDOW_SERVICE); //here is all the science of params final WindowManager.LayoutParams params = new WindowManager.LayoutParams( WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager. LayoutParams.TYPE_SYSTEM_ERROR, WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON, PixelFormat.TRANSLUCENT ); windowManager.addView(imageView, params); hand=new Handler(); } catch (Exception e) { hand=new Handler(); e.printStackTrace(); } }else{ windowManager = (WindowManager) getSystemService(WINDOW_SERVICE); final WindowManager.LayoutParams params = new WindowManager.LayoutParams( WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.TYPE_PHONE, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT); params.gravity = Gravity.TOP | Gravity.CENTER; params.x = ((getApplicationContext().getResources().getDisplayMetrics().widthPixels) / 2); params.y = ((getApplicationContext().getResources().getDisplayMetrics().heightPixels) / 2); windowManager.addView(imageView, params); } } @Override public IBinder onBind(Intent intent) { return null; } @Override public int onStartCommand(Intent intent, int flags, int startId) { /* We want this service to continue running until it is explicitly * stopped, so return sticky. */ return START_STICKY; } @Override public void onDestroy() { super.onDestroy(); if (imageView != null) { try { windowManager.removeView(imageView); } catch (Exception e) { e.printStackTrace(); } } /**** added to fix the bug of view not attached to window manager ****/ } }
回答3:
Try to change WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY to WindowManager.LayoutParams.TYPE_PHONE?
回答4:
Did you request runtime permission by calling following intent?
private void requestOverlayPermission() { if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.M) { return; } Intent myIntent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION); myIntent.setData(Uri.parse("package:" + getPackageName())); startActivityForResult(myIntent, APP_PERMISSIONS); }
Then in onActivityResult() check if Settings.canDrawOverlays(this) is true otherwise request permission again by calling above method.
回答5:
Source SYSTEM_ALERT_WINDOW String SYSTEM_ALERT_WINDOW Allows an app to create windows using the type TYPE_APPLICATION_OVERLAY, shown on top of all other apps. Very few apps should use this permission; these windows are intended for system-level interaction with the user.
Note: If the app targets API level 23 or higher, the app user must explicitly grant this permission to the app through a permission management screen. The app requests the user's approval by sending an intent with action ACTION_MANAGE_OVERLAY_PERMISSION. The app can check whether it has this authorization by calling Settings.canDrawOverlays().
