Fatal bugs in the Activity page

[IJDesign]

Hi friends, did anyone know what's the fatal bug in the UserDataActivity? Whenever I open the ACTIVITY page, the app was forced to stop. The log of the error is as follows. Could you give me some hints to debug it? Thanks.

02-28 09:31:00.719 701-915/? V/AudioPolicyEffects: releaseOutputSessionEffects: no output processing was attached to this stream 02-28 09:31:00.760 15414-15414/com.fitbit.sampleandroidoauth2 D/AndroidRuntime: Shutting down VM 02-28 09:31:00.761 15414-15414/com.fitbit.sampleandroidoauth2 E/AndroidRuntime: FATAL EXCEPTION: main Process: com.fitbit.sampleandroidoauth2, PID: 15414 java.lang.ArrayIndexOutOfBoundsException: length=0; index=0 at com.fitbit.sampleandroidoauth2.fragments.WeightLogFragment.bindWeightLogs(WeightLogFragment.java:78) at com.fitbit.sampleandroidoauth2.fragments.WeightLogFragment.onLoadFinished(WeightLogFragment.java:59) at com.fitbit.sampleandroidoauth2.fragments.WeightLogFragment.onLoadFinished(WeightLogFragment.java:27) at android.app.LoaderManagerImpl$LoaderInfo.callOnLoadFinished(LoaderManager.java:489) at android.app.LoaderManagerImpl$LoaderInfo.onLoadComplete(LoaderManager.java:457) at android.content.Loader.deliverResult(Loader.java:144) at android.content.AsyncTaskLoader.dispatchOnLoadComplete(AsyncTaskLoader.java:265) at android.content.AsyncTaskLoader$LoadTask.onPostExecute(AsyncTaskLoader.java:92) at android.os.AsyncTask.finish(AsyncTask.java:667) at android.os.AsyncTask.-wrap1(AsyncTask.java) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:684) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6121) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779) 02-28 09:31:00.763 1555-4043/? W/ActivityManager: Force finishing activity com.fitbit.sampleandroidoauth2/.UserDataActivity 02-28 09:31:00.766 1555-4043/? D/ActivityTrigger: ActivityTrigger activityPauseTrigger

[IJDesign]

I found the bug was in the "WeightLogFragment.java." By temporarily disabling the "weight" fragment in the UserDataPagerAdapter.java, I could use and try the other functions.