java.lang.RuntimeException: Unable to start activity ComponentInfo{com.brzozowski.marcin.inzynierka/com.brzozowski.marcin.inzynierka.activities.ChooseGroupActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.widget.Filter android.widget.SimpleAdapter.getFilter()' on a null object reference

Stack Overflow | csal | 3 weeks ago
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  1. 0

    SimpleAdapter crashes every second launch time

    Stack Overflow | 3 weeks ago | csal
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.brzozowski.marcin.inzynierka/com.brzozowski.marcin.inzynierka.activities.ChooseGroupActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.widget.Filter android.widget.SimpleAdapter.getFilter()' on a null object reference
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    JSONParser when retrieving from MySQL

    Stack Overflow | 3 weeks ago | csal
    android.view.WindowLeaked: Activity com.brzozowski.marcin.inzynierka.activities.ChooseGroupActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{2a82618a V.E..... R......D 0,0-1026,348} that was originally added here
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    java.lang.RuntimeException: Unable to start activity ComponentInfo{info.androidhive.tabsswipe/info.androidhive.tabsswipe.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
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  5. 0

    NullPointerException on a listView.setAdapter() method

    Stack Overflow | 1 year ago | God
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.predesignedmails/com.example.predesignedmails.LoveM ailsActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference
  6. 0

    Caused by java.lang.NullPointerException: Attempt to invoke virtual method 'void com.karumi.dexter.DexterInstance.onActivityReady(android.app.Activity)' on a null object reference

    GitHub | 1 month ago | cioraneanu
    java.lang.RuntimeException: Unable to start activity ComponentInfo{MYPACKAGE/com.karumi.dexter.DexterActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.karumi.dexter.DexterInstance.onActivityReady(android.app.Activity)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'android.widget.Filter android.widget.SimpleAdapter.getFilter()' on a null object reference

      at com.brzozowski.marcin.inzynierka.activities.ChooseGroupActivity$2.onTextChanged()
    2. com.brzozowski.marcin
      ChooseGroupActivity$2.onTextChanged
      1. com.brzozowski.marcin.inzynierka.activities.ChooseGroupActivity$2.onTextChanged(ChooseGroupActivity.java:103)
      1 frame
    3. Android Platform
      View.restoreHierarchyState
      1. android.widget.TextView.sendOnTextChanged(TextView.java:7679)
      2. android.widget.TextView.setText(TextView.java:4060)
      3. android.widget.TextView.setText(TextView.java:3915)
      4. android.widget.EditText.setText(EditText.java:85)
      5. android.widget.TextView.setText(TextView.java:3890)
      6. android.widget.TextView.onRestoreInstanceState(TextView.java:3790)
      7. android.view.View.dispatchRestoreInstanceState(View.java:13740)
      8. android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2893)
      9. android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2893)
      10. android.view.View.restoreHierarchyState(View.java:13718)
      10 frames
    4. Android
      PhoneWindow.restoreHierarchyState
      1. com.android.internal.policy.impl.PhoneWindow.restoreHierarchyState(PhoneWindow.java:2009)
      1 frame
    5. Android Platform
      ActivityThread.main
      1. android.app.Activity.onRestoreInstanceState(Activity.java:1023)
      2. android.app.ListActivity.onRestoreInstanceState(ListActivity.java:219)
      3. android.app.Activity.performRestoreInstanceState(Activity.java:978)
      4. android.app.Instrumentation.callActivityOnRestoreInstanceState(Instrumentation.java:1162)
      5. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
      6. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
      7. android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3947)
      8. android.app.ActivityThread.access$900(ActivityThread.java:151)
      9. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1309)
      10. android.os.Handler.dispatchMessage(Handler.java:102)
      11. android.os.Looper.loop(Looper.java:135)
      12. android.app.ActivityThread.main(ActivityThread.java:5254)
      12 frames
    6. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    7. 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