我正在开发一个用于背景视频录制的应用程序,所以我使用了WindowManager,但它对我没有起作用。出现了以下错误:
08-23 15:38:21.021: E/AndroidRuntime(4200): java.lang.RuntimeException: Unable to create service com.example.prankapp.BackgroundVideoRecorder: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@418c0b68 -- permission denied for this window type
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.app.ActivityThread.handleCreateService(ActivityThread.java:2277)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.app.ActivityThread.access$1600(ActivityThread.java:128)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1215)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.os.Handler.dispatchMessage(Handler.java:99)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.os.Looper.loop(Looper.java:137)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.app.ActivityThread.main(ActivityThread.java:4517)
08-23 15:38:21.021: E/AndroidRuntime(4200): at java.lang.reflect.Method.invokeNative(Native Method)
08-23 15:38:21.021: E/AndroidRuntime(4200): at java.lang.reflect.Method.invoke(Method.java:511)
08-23 15:38:21.021: E/AndroidRuntime(4200): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)
08-23 15:38:21.021: E/AndroidRuntime(4200): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)
08-23 15:38:21.021: E/AndroidRuntime(4200): at dalvik.system.NativeStart.main(Native Method)
08-23 15:38:21.021: E/AndroidRuntime(4200): Caused by: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@418c0b68 -- permission denied for this window type
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.view.ViewRootImpl.setView(ViewRootImpl.java:707)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:301)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140)
08-23 15:38:21.021: E/AndroidRuntime(4200): at com.example.prankapp.BackgroundVideoRecorder.onCreate(BackgroundVideoRecorder.java:53)
08-23 15:38:21.021: E/AndroidRuntime(4200): at android.app.ActivityThread.handleCreateService(ActivityThread.java:2267)
08-23 15:38:21.021: E/AndroidRuntime(4200): ... 10 more
我的windowManager代码:
windowManager = (WindowManager) this.getSystemService(BackgroundVideoRecorder.WINDOW_SERVICE);
surfaceView = new SurfaceView(this);
LayoutParams layoutParams = new WindowManager.LayoutParams(
1, 1,
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT
);
//layoutParams.gravity = Gravity.LEFT | Gravity.TOP;
windowManager.addView(surfaceView, layoutParams);
surfaceView.getHolder().addCallback(this);
请帮帮我,谢谢。