java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference

Stack Overflow | W. Vincent | 7 months ago
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  1. 0

    Attempt to invoke virtual method 'android.content.Context.getResources()' on a null object reference

    Stack Overflow | 7 months ago | W. Vincent
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
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    java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
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    java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
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    java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
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    java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
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Root Cause Analysis

  1. java.lang.NullPointerException

    Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference

    at android.widget.Toast.<init>()
  2. Android Platform
    Toast.makeText
    1. android.widget.Toast.<init>(Toast.java:102)
    2. android.widget.Toast.makeText(Toast.java:259)
    2 frames
  3. com.example.nkwpy
    MainFragment$queryListener.onClick
    1. com.example.nkwpy.myapplication.MainFragment.query(MainFragment.java:176)
    2. com.example.nkwpy.myapplication.MainFragment.access$000(MainFragment.java:46)
    3. com.example.nkwpy.myapplication.MainFragment$queryListener.onClick(MainFragment.java:161)
    3 frames
  4. Android Platform
    ActivityThread.main
    1. android.view.View.performClick(View.java:5207)
    2. android.view.View$PerformClick.run(View.java:21177)
    3. android.os.Handler.handleCallback(Handler.java:739)
    4. android.os.Handler.dispatchMessage(Handler.java:95)
    5. android.os.Looper.loop(Looper.java:148)
    6. android.app.ActivityThread.main(ActivityThread.java:5458)
    6 frames
  5. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invoke(Native Method)
    1 frame
  6. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)
    2 frames