android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@3af3b47 is not valid; is your activity running?
	at android.view.ViewRootImpl.setView(ViewRootImpl.java:748)
	at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:343)
	at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:94)
	at android.widget.Toast$TN.handleShow(Toast.java:504)
	at android.widget.Toast$TN$2.handleMessage(Toast.java:384)
	at android.os.Handler.dispatchMessage(Handler.java:102)
	at android.os.Looper.loop(Looper.java:154)
	at android.app.ActivityThread.main(ActivityThread.java:6351)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:896)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:786)