java.lang.NullPointerException: Attempt to invoke virtual method 'void com.mixpanel.android.mpmetrics.w.a(java.lang.String, org.json.JSONObject)' on a null object reference at com.sample.app.activities.SampleActivity.**com.mixpanel.android.mpmetrics.MixpanelAPI.track**(SampleActivity.java:1541)

GitHub | DuM4ll3 | 4 months ago
  1. 0

    GitHub comment 211#242518772

    GitHub | 4 months ago | DuM4ll3
    java.lang.NullPointerException: Attempt to invoke virtual method 'void com.mixpanel.android.mpmetrics.w.a(java.lang.String, org.json.JSONObject)' on a null object reference at com.sample.app.activities.SampleActivity.**com.mixpanel.android.mpmetrics.MixpanelAPI.track**(SampleActivity.java:1541)
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    java.lang.NullPointerException into SlidingMenu

    Stack Overflow | 2 years ago | pavel_coder
    java.lang.NullPointerException
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    java.lang.NullPointerException in Wifi enabling code

    Stack Overflow | 2 years ago | user59053
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object android.content.Context.getSystemService(java.lang.String)' on a null object reference 01-01 22:53:40.994: W/System.err(13438): at com.wifiTest.TurnOnWIfiTestAction.turnOnWifi(TurnOnWIfiTestAction.java:18) 01-01 22:53:40.994: W/System.err(13438): at com.post.l_upgrade.MainActivity.wifienable(MainActivity.java:46) 01-01 22:53:40.994: W/System.err(13438): at java.lang.reflect.Method.invoke(Native Method) 01-01 22:53:40.994: W/System.err(13438): at java.lang.reflect.Method.invoke(Method.java:372) 01-01 22:53:40.994: W/System.err(13438): at android.view.View$1.onClick(View.java:3986) 01-01 22:53:41.000: W/System.err(13438): at android.view.View.performClick(View.java:4728) 01-01 22:53:41.000: W/System.err(13438): at android.view.View$PerformClick.run(View.java:19508) 01-01 22:53:41.000: W/System.err(13438): at android.os.Handler.handleCallback(Handler.java:739) 01-01 22:53:41.002: W/System.err(13438): at android.os.Handler.dispatchMessage(Handler.java:95) 01-01 22:53:41.002: W/System.err(13438): at android.os.Looper.loop(Looper.java:135)
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    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference

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Root Cause Analysis

  1. java.lang.NullPointerException

    Attempt to invoke virtual method 'void com.mixpanel.android.mpmetrics.w.a(java.lang.String, org.json.JSONObject)' on a null object reference at com.sample.app.activities.SampleActivity.**com.mixpanel.android.mpmetrics.MixpanelAPI.track**(SampleActivity.java:1541)

    at android.app.Instrumentation.callActivityOnStart()
  2. Android Platform
    ActivityThread.main
    1. android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1239)
    2. android.app.Activity.performStart(Activity.java:6057)
    3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
    4. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2394)
    5. android.app.ActivityThread.access$800(ActivityThread.java:154)
    6. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1308)
    7. android.os.Handler.dispatchMessage(Handler.java:102)
    8. android.os.Looper.loop(Looper.java:135)
    9. android.app.ActivityThread.main(ActivityThread.java:5276)
    9 frames
  3. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invoke(Method.java)
    2. java.lang.reflect.Method.invoke(Method.java:372)
    2 frames
  4. Android
    ZygoteInit$MethodAndArgsCaller.run
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
    1 frame