android - Why is NPE thrown when finishing Activity? -

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i have error has been driving me crazy days. unfortunately, can not show code 2 reason, boss not appreciate , codebase large share. error occurs whenever activity finishing. weather because call finish() or because os destroys it.

the question is, (or could) cause execpendingactions() in fragmentmanagerimpl throw npe @ line 1196.

here stacktrace:

fragmentmanagerimpl.execpendingactions() line: 1196  fragmentmanagerimpl$1.run() line: 375    handler.handlecallback(message) line: 587    handler.dispatchmessage(message) line: 92    looper.loop() line: 126  activitythread.main(string[]) line: 3997     method.invokenative(object, object[], class, class[], class, int, boolean) line: not available [native method]   method.invoke(object, object...) line: 491   zygoteinit$methodandargscaller.run() line: 841   zygoteinit.main(string[]) line: 599  nativestart.main(string[]) line: not available [native method]

you try using compat library , debugging that.

alternatively try , reproduce in cut down sample app.


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