java.lang.IllegalArgumentException: The observer is null.

google.com | 6 months ago
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    Root Cause Analysis

    1. java.lang.IllegalArgumentException

      The observer is null.

      at android.database.Observable.unregisterObserver()
    2. Android Platform
      ViewGroup.removeAllViews
      1. android.database.Observable.unregisterObserver(Observable.java:64)
      2. android.widget.BaseAdapter.unregisterDataSetObserver(BaseAdapter.java:42)
      3. android.widget.AbsListView.onDetachedFromWindow(AbsListView.java:2608)
      4. android.view.View.dispatchDetachedFromWindow(View.java:11972)
      5. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2532)
      6. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2530)
      7. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2530)
      8. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2530)
      9. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2530)
      10. android.view.ViewGroup.removeAllViewsInLayout(ViewGroup.java:3784)
      11. android.view.ViewGroup.removeAllViews(ViewGroup.java:3730)
      11 frames