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Android Android Lists and Adapters (2015) Using Parcelable Data Retrieving Parcelable Data

Jakob Wozniak
Jakob Wozniak
17,896 Points

FATAL EXCEPTION: main

Hi everybody! I just spent a good chunk of time trying to figure out this error I was getting, so I thought I'd share the answer and the technique for finding it. My app kept shutting down when I tapped the 7 DAY VIEW button, and I'd get this long error:

java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference at android.widget.AbsListView.obtainView(AbsListView.java:2363) at android.widget.ListView.makeAndAddView(ListView.java:1875) at android.widget.ListView.fillDown(ListView.java:702) at android.widget.ListView.fillFromTop(ListView.java:763) at android.widget.ListView.layoutChildren(ListView.java:1684)

It goes on and on. I tried checking all the answers here for the video, but no one seemed to have this same problem. I googled the first part of the error (through "on a null object reference at android.widget"), and found a StackTrace post about it.

Turns out, I was returning null on my "public View getView" method in the DayAdapter, and all I needed was to change it to return convertView.

Hope this helps someone out there!