android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running?
at android.view.ViewRootImpl.setView(ViewRootImpl.java:894)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:337)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:109)
at android.widget.PopupWindow.invokePopup(PopupWindow.java:1339)
at android.widget.PopupWindow.showAtLocation(PopupWindow.java:1081)
at android.widget.PopupWindow.showAtLocation(PopupWindow.java:1039)
at com.xyznh.imgencryption.MainActivity.e(Unknown Source)
at com.xyznh.imgencryption.u.handleMessage(Unknown Source)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7329)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running?
at android.view.ViewRootImpl.setView(ViewRootImpl.java:894)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:337)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:109)
at android.widget.PopupWindow.invokePopup(PopupWindow.java:1339)
at android.widget.PopupWindow.showAtLocation(PopupWindow.java:1081)
at android.widget.PopupWindow.showAtLocation(PopupWindow.java:1039)
at com.xyznh.imgencryption.MainActivity.e(Unknown Source)
at com.xyznh.imgencryption.u.handleMessage(Unknown Source)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7329)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteI