java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.NumberPicker.setMinValue(int)' on a null object reference

Stack Overflow | xeotrel2 | 6 months ago
  1. 0

    android Minutes-Seconds picker preference

    Stack Overflow | 6 months ago | xeotrel2
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.NumberPicker.setMinValue(int)' on a null object reference
  2. 0
    Initialize the variable before calling a method on it.
  3. 0
    Use 'dialog' to access views from custom_layout layout.
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  5. 0
    The resource was accessed after it was dismissed.
  6. 0
    The parsed JSON does not contains the requested field.

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.widget.NumberPicker.setMinValue(int)' on a null object reference

      at com.example.rhodon.test1.DurationPickerDialog.onAttachedToWindow()
    2. com.example.rhodon
      DurationPickerDialog.onAttachedToWindow
      1. com.example.rhodon.test1.DurationPickerDialog.onAttachedToWindow(DurationPickerDialog.java:47)
      1 frame
    3. Android
      PhoneWindow$DecorView.onAttachedToWindow
      1. com.android.internal.policy.impl.PhoneWindow$DecorView.onAttachedToWindow(PhoneWindow.java:3192)
      1 frame
    4. Android Platform
      ActivityThread.main
      1. android.view.View.dispatchAttachedToWindow(View.java:13525)
      2. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2688)
      3. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1299)
      4. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
      5. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5885)
      6. android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
      7. android.view.Choreographer.doCallbacks(Choreographer.java:580)
      8. android.view.Choreographer.doFrame(Choreographer.java:550)
      9. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
      10. android.os.Handler.handleCallback(Handler.java:739)
      11. android.os.Handler.dispatchMessage(Handler.java:95)
      12. android.os.Looper.loop(Looper.java:135)
      13. android.app.ActivityThread.main(ActivityThread.java:5254)
      13 frames
    5. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    6. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
      2 frames