java.lang.NullPointerException: Listener must not be null

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Root Cause Analysis

  1. java.lang.NullPointerException

    Listener must not be null

    at com.google.android.gms.common.internal.zzx.zzb()
  2. com.google.android
    GoogleApiClient$Builder.addConnectionCallbacks
    1. com.google.android.gms.common.internal.zzx.zzb(Unknown Source)
    2. com.google.android.gms.common.api.GoogleApiClient$Builder.addConnectionCallbacks(Unknown Source)
    2 frames
  3. md551afeb14f78091b7dcc7953e9e497c49
    MapActivity.onCreate
    1. md551afeb14f78091b7dcc7953e9e497c49.MapActivity.n_onCreate(Native Method)
    2. md551afeb14f78091b7dcc7953e9e497c49.MapActivity.onCreate(MapActivity.java:33)
    2 frames
  4. Android Platform
    ActivityThread.main
    1. android.app.Activity.performCreate(Activity.java:5411)
    2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
    3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2233)
    4. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2359)
    5. android.app.ActivityThread.access$800(ActivityThread.java:139)
    6. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
    7. android.os.Handler.dispatchMessage(Handler.java:102)
    8. android.os.Looper.loop(Looper.java:136)
    9. android.app.ActivityThread.main(ActivityThread.java:5230)
    9 frames
  5. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invokeNative(Native Method)
    2. java.lang.reflect.Method.invoke(Method.java:515)
    2 frames
  6. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:780)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:596)
    2 frames
  7. Android Platform
    NativeStart.main
    1. dalvik.system.NativeStart.main(Native Method)
    1 frame