java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.zer0_ll.somalimeddictionary/com.example.zer0_ll.somalimeddictionary.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void java.util.ArrayList.clear()' on a null object reference

Stack Overflow | Zero_LL | 6 months ago
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    Android Studio populate Database to RecyclerVIew

    Stack Overflow | 6 months ago | Zero_LL
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.zer0_ll.somalimeddictionary/com.example.zer0_ll.somalimeddictionary.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void java.util.ArrayList.clear()' on a null object reference

    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void java.util.ArrayList.clear()' on a null object reference

      at com.example.zer0_ll.somalimeddictionary.DatabaseAccess.getWords()
    2. com.example.zer0_ll
      MainActivity.onCreate
      1. com.example.zer0_ll.somalimeddictionary.DatabaseAccess.getWords(DatabaseAccess.java:62)
      2. com.example.zer0_ll.somalimeddictionary.MainActivity.onCreate(MainActivity.java:43)
      2 frames
    3. Android Platform
      ActivityThread.main
      1. android.app.Activity.performCreate(Activity.java:6178)
      2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
      3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2648)
      4. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2769)
      5. android.app.ActivityThread.access$900(ActivityThread.java:177)
      6. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1430)
      7. android.os.Handler.dispatchMessage(Handler.java:102)
      8. android.os.Looper.loop(Looper.java:135)
      9. android.app.ActivityThread.main(ActivityThread.java:5910)
      9 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:1405)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)
      2 frames