java.lang.NullPointerException: Attempt to invoke virtual method 'void tk.wasdennnoch.androidn_ify.systemui.qs.KeyguardMonitor.addCallback(tk.wasdennnoch.androidn_ify.systemui.qs.KeyguardMonitor$Callback)' on a null object reference

GitHub | tsynik | 3 months ago
  1. 0

    GitHub comment 815#246124439

    GitHub | 3 months ago | tsynik
    java.lang.NullPointerException: Attempt to invoke virtual method 'void tk.wasdennnoch.androidn_ify.systemui.qs.KeyguardMonitor.addCallback(tk.wasdennnoch.androidn_ify.systemui.qs.KeyguardMonitor$Callback)' on a null object reference
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    toolbar change onLongClick on item in recyclerview

    Stack Overflow | 9 months ago | sandesh
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
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    Why am I getting this error when I run my app?

    Stack Overflow | 3 months ago | Julian
    java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.android.stimmenauswerter/com.example.android.stimmenauswerter.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
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    Created Android App but keeps getting stopped error

    Stack Overflow | 6 months ago | Tim Sharpe
    java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.mylondonnews.knowbrockvilleuser.mybrockvillenews/com.mylondonnews.knowbrockvilleuser.mybrockvillenews.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
  6. 0

    Calling one of my Main Activity Method From another Class Returns an Error

    Stack Overflow | 2 months ago | BraveHeart
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void tk.wasdennnoch.androidn_ify.systemui.qs.KeyguardMonitor.addCallback(tk.wasdennnoch.androidn_ify.systemui.qs.KeyguardMonitor$Callback)' on a null object reference

      at tk.wasdennnoch.androidn_ify.systemui.qs.QSAnimator.onViewAttachedToWindow()
    2. tk.wasdennnoch.androidn_ify
      QSAnimator.onViewAttachedToWindow
      1. tk.wasdennnoch.androidn_ify.systemui.qs.QSAnimator.onViewAttachedToWindow(QSAnimator.java:96)
      1 frame
    3. Android Platform
      ActivityThread.main
      1. android.view.View.dispatchAttachedToWindow(View.java:13619)
      2. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2689)
      3. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2696)
      4. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2696)
      5. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2696)
      6. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2696)
      7. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2696)
      8. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2696)
      9. android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2696)
      10. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1303)
      11. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1065)
      12. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5901)
      13. android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
      14. android.view.Choreographer.doCallbacks(Choreographer.java:580)
      15. android.view.Choreographer.doFrame(Choreographer.java:550)
      16. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
      17. android.os.Handler.handleCallback(Handler.java:739)
      18. android.os.Handler.dispatchMessage(Handler.java:95)
      19. android.os.Looper.loop(Looper.java:211)
      20. android.app.ActivityThread.main(ActivityThread.java:5389)
      20 frames
    4. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    5. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)
      2 frames
    6. XposedBridge
      XposedBridge.main
      1. de.robv.android.xposed.XposedBridge.main(XposedBridge.java:102)
      1 frame