java.lang.IllegalArgumentException: The observer is null.

google.com | 3 months ago
  1. 0

    IllegalArgumentException: The observer is null

    GitHub | 5 years ago | sannyo
    java.lang.IllegalArgumentException: The observer is null.
  2. 0

    Android device configuration change and setRetainInstance, crash the second time

    Stack Overflow | 4 years ago | bobygerm
    java.lang.IllegalArgumentException: Receiver not registered: android.widget.AdapterViewFlipper$1@424512f8
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  4. 0

    java.lang.IllegalStateException Receiver not registered

    Stack Overflow | 1 year ago | Manish
    java.lang.IllegalArgumentException: Receiver not registered: android.webkit.WebViewClassic$9@423758b0
  5. 0

    visual-c++: java.lang.IllegalStateException Receiver not registered

    blogspot.com | 11 months ago
    java.lang.IllegalArgumentException: Receiver not registered: android.webkit.WebViewClassic$9@423758b0

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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:59)
      2. android.widget.BaseAdapter.unregisterDataSetObserver(BaseAdapter.java:42)
      3. android.widget.AbsListView.onDetachedFromWindow(AbsListView.java:2373)
      4. android.view.View.dispatchDetachedFromWindow(View.java:9756)
      5. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2274)
      6. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2272)
      7. android.view.ViewGroup.removeAllViewsInLayout(ViewGroup.java:3724)
      8. android.view.ViewGroup.removeAllViews(ViewGroup.java:3679)
      8 frames