java.lang.NullPointerException: Attempt to invoke virtual method 'void org.altbeacon.beacon.BeaconManager.setBackgroundMode(boolean)' on a null object reference

GitHub | jeffkelsey | 4 months ago
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    NPE in BackgroundPowerSaver onActivityPaused and onActivityResume

    GitHub | 4 months ago | jeffkelsey
    java.lang.NullPointerException: Attempt to invoke virtual method 'void org.altbeacon.beacon.BeaconManager.setBackgroundMode(boolean)' on a null object reference
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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void org.altbeacon.beacon.BeaconManager.setBackgroundMode(boolean)' on a null object reference

      at org.altbeacon.beacon.powersave.BackgroundPowerSaver.onActivityPaused()
    2. org.altbeacon.beacon
      BackgroundPowerSaver.onActivityPaused
      1. org.altbeacon.beacon.powersave.BackgroundPowerSaver.onActivityPaused(SourceFile:76)
      1 frame
    3. Android Platform
      Activity.onPause
      1. android.app.Application.dispatchActivityPaused(Application.java:247)
      2. android.app.Activity.onPause(Activity.java:1652)
      2 frames
    4. Android Support v4
      FragmentActivity.onPause
      1. android.support.v4.app.FragmentActivity.onPause(SourceFile:440)
      1 frame
    5. com.ticketmaster.mobile
      MainActivity.onPause
      1. com.ticketmaster.mobile.android.library.activity.DrawerActivity.onPause(SourceFile:223)
      2. com.ticketmaster.mobile.android.library.activity.MainActivity.onPause(SourceFile:218)
      2 frames
    6. Android Platform
      Looper.loop
      1. android.app.Activity.performPause(Activity.java:7033)
      2. android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1339)
      3. android.app.ActivityThread.performPauseActivity(ActivityThread.java:4572)
      4. android.app.ActivityThread.performPauseActivity(ActivityThread.java:4545)
      5. android.app.ActivityThread.handlePauseActivity(ActivityThread.java:4520)
      6. android.app.ActivityThread.access$1300(ActivityThread.java:221)
      7. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1805)
      8. android.os.Handler.dispatchMessage(Handler.java:102)
      9. android.os.Looper.loop(Looper.java:158)
      9 frames