09-29 20:08:23.781  21303-21303/com.example.jay.calendart E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.example.jay.calendart, PID: 21303
    java.lang.NullPointerException: Attempt to invoke virtual method 'int java.util.ArrayList.size()' on a null object reference
            at com.example.jay.calendart.adapter.CalendarAdapter.getPositionList(CalendarAdapter.java:254)
            at com.example.jay.calendart.CalendarActivity$3.onItemClick(CalendarActivity.java:85)
            at android.widget.AdapterView.performItemClick(AdapterView.java:300)
            at android.widget.AbsListView.performItemClick(AbsListView.java:1143)
            at android.widget.AbsListView$PerformClick.run(AbsListView.java:3044)
            at android.widget.AbsListView$3.run(AbsListView.java:3860)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5253)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)