Why am I getting a crash when exiting my Activity?

Question

I am experiencing a crash in my app when I quit (via the back button) out of my Activity. So far as I can tell this is happening in the Android codebase and not mine, but I\

Answer 1

In your Activity before startManagingCursor() method is called , your Cursor is null. Dont let the Cursor be null.

Answer 2

Excellent explanation of what's going on inside during this situation: http://www.jjoe64.com/2011/06/how-to-fix-activityperformstop.html

Answer 3

Can't help much, as there's no code. Still looking at

Caused by: java.lang.NullPointerException at android.app.Activity.performStop(Activity.java:3575)

I just checked Activity.java

       final int N = mManagedCursors.size();
        for (int i=0; i<N; i++) {
            ManagedCursor mc = mManagedCursors.get(i); 
            if (!mc.mReleased) {
                mc.mCursor.deactivate(); // line 3575
                mc.mReleased = true;
            }
        }

Are you sure all cursors are released properly?