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Unable to add window -- token null is not valid; is your activity running?
android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running? at android.view.ViewRootImpl.setView(ViewRootImpl.java:696) at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:289) at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85) at android.widget.PopupWindow.invokePopup(PopupWindow.java:1153) at android.widget.PopupWindow.showAtLocation(PopupWindow.java:978) at android.widget.PopupWindow.showAtLocation(PopupWindow.java:942) at com.meizu.widget.MagnifierPopupWindow.showMagnifier(MagnifierPopupWindow.java:106) at android.widget.Editor$MzInsertionPointCursorController.update(Editor.java:5567) at android.widget.Editor$MzInsertionPointCursorController.show(Editor.java:5571) at android.widget.Editor.performLongClickMz(Editor.java:5290) at android.widget.TextView.performLongClick(TextView.java:9126) at android.view.View$CheckForLongPress.run(View.java:20357) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:194) at android.app.ActivityThread.main(ActivityThread.java:5824) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1010) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)