android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@53b385c is not valid; is your activity running?
	at android.view.ViewRootImpl.setView(ViewRootImpl.java:831)
	at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:372)
	at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:114)
	at android.widget.Toast$TN.handleShow(Toast.java:472)
	at android.widget.Toast$TN$2.handleMessage(Toast.java:350)
	at android.os.Handler.dispatchMessage(Handler.java:110)
	at android.os.Looper.loop(Looper.java:203)
	at android.app.ActivityThread.main(ActivityThread.java:6414)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1111)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:972)