java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference

Stack Overflow | Nihad Azimli | 3 months ago
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    setText() nullPointer exception for text view

    Stack Overflow | 3 months ago | Nihad Azimli
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference

      at android.example.com.sevens.GameActivity$MyDragListener.onDrag()
    2. android.example.com
      GameActivity$MyDragListener.onDrag
      1. android.example.com.sevens.GameActivity$MyDragListener.onDrag(GameActivity.java:413)
      1 frame
    3. Android Platform
      ActivityThread.main
      1. android.view.View.dispatchDragEvent(View.java:19809)
      2. android.view.ViewGroup.dispatchDragEvent(ViewGroup.java:1423)
      3. android.view.ViewGroup.dispatchDragEvent(ViewGroup.java:1423)
      4. android.view.ViewGroup.dispatchDragEvent(ViewGroup.java:1423)
      5. android.view.ViewGroup.dispatchDragEvent(ViewGroup.java:1423)
      6. android.view.ViewGroup.dispatchDragEvent(ViewGroup.java:1423)
      7. android.view.ViewGroup.dispatchDragEvent(ViewGroup.java:1423)
      8. android.view.ViewRootImpl.handleDragEvent(ViewRootImpl.java:5488)
      9. android.view.ViewRootImpl.access$1000(ViewRootImpl.java:108)
      10. android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:3624)
      11. android.os.Handler.dispatchMessage(Handler.java:102)
      12. android.os.Looper.loop(Looper.java:168)
      13. android.app.ActivityThread.main(ActivityThread.java:5845)
      13 frames
    4. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      1 frame
    5. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:797)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:687)
      2 frames