java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=null} to activity {my.package.myapplication/my.package.myapplication.Person1Screen}: java.lang.NullPointerException: Attempt to invoke virtual method 'void java.util.ArrayList.add(int, java.lang.Object)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void java.util.ArrayList.add(int, java.lang.Object)' on a null object reference

      at my.package.myapplication.Person1Screen.onActivityResult()
    2. my.package.myapplication
      Person1Screen.onActivityResult
      1. my.package.myapplication.Person1Screen.onActivityResult(Person1Screen.java:210)
      1 frame
    3. Android Platform
      ActivityThread.deliverResults
      1. android.app.Activity.dispatchActivityResult(Activity.java:6650)
      2. android.app.ActivityThread.deliverResults(ActivityThread.java:3755)
      2 frames