android - Checking State before calling activity.getSupportFragmentManager().popBackStackImmediate()? -


sometimes calling 

    activity.getsupportfragmentmanager().popbackstackimmediate()

results in error in particular:

 fatal exception: java.lang.illegalstateexception: can not perform   action after onsaveinstancestate

what check prevent error occurring? enough check

 !activity.isfinishing()

or should 1 check activity not stopped?


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