java.lang.RuntimeException: Unable to start activity ComponentInfo{net.xairon.colm/net.xairon.colm.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.util.ArrayList.get(int)' on a null object reference

Stack Overflow | Dima Kiltau | 4 months ago
  1. 0

    JSON parsing with left and right swipe navigation

    Stack Overflow | 4 months ago | Dima Kiltau
    java.lang.RuntimeException: Unable to start activity ComponentInfo{net.xairon.colm/net.xairon.colm.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.util.ArrayList.get(int)' on a null object reference
  2. 0
    Initialize the variable before calling a method on it.
  3. 0
    The parsed JSON does not contains the requested field.
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  5. 0

    not receiving any values from php server

    Stack Overflow | 9 months ago | user3835979
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.util.ArrayList.get(int)' on a null object reference
  6. 0

    An Object in my class is always null

    Stack Overflow | 5 months ago | Daniele
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.util.ArrayList.get(int)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'java.lang.Object java.util.ArrayList.get(int)' on a null object reference

      at net.xairon.colm.MainActivity.setValues()
    2. net.xairon.colm
      MainActivity.onCreate
      1. net.xairon.colm.MainActivity.setValues(MainActivity.java:111)
      2. net.xairon.colm.MainActivity.onCreate(MainActivity.java:66)
      2 frames
    3. Android Platform
      ActivityThread.performLaunchActivity
      1. android.app.Activity.performCreate(Activity.java:6876)
      2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135)
      3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206)
      3 frames