E/AndroidRuntime( 1904): FATAL EXCEPTION: main
E/AndroidRuntime( 1904): java.lang.IllegalArgumentException: View not attached to window manager
E/AndroidRuntime( 1904):    at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:653)
E/AndroidRuntime( 1904):    at android.view.WindowManagerImpl.updateViewLayout(WindowManagerImpl.java:340)
E/AndroidRuntime( 1904):    at com.android.systemui.statusbar.phone.NavigationBarView.setSlippery(NavigationBarView.java:267)
E/AndroidRuntime( 1904):    at com.android.systemui.statusbar.phone.PhoneStatusBar.makeExpandedVisible(PhoneStatusBar.java:1287)
E/AndroidRuntime( 1904):    at com.android.systemui.statusbar.phone.PhoneStatusBar.prepareTracking(PhoneStatusBar.java:1582)
E/AndroidRuntime( 1904):    at com.android.systemui.statusbar.phone.PhoneStatusBar.animateExpand(PhoneStatusBar.java:1320)
E/AndroidRuntime( 1904):    at com.android.systemui.statusbar.CommandQueue$H.handleMessage(CommandQueue.java:289)
E/AndroidRuntime( 1904):    at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 1904):    at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 1904):    at android.app.ActivityThread.main(ActivityThread.java:4896)
E/AndroidRuntime( 1904):    at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 1904):    at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 1904):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:788)
E/AndroidRuntime( 1904):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
E/AndroidRuntime( 1904):    at dalvik.system.NativeStart.main(Native Method)