Using com.example.android.notepad and ExpandableList2.java from
com.example.android.apis.view, I have written a simple application
that contains a content provider serving two tables in an sqlite
database and a display activity that uses my ExpandableListActivity
subclass. I am using my own layouts for the ExpandableList, and the
group and child layouts. The contents of the database are being
displayed properly in the display activity, and the groups collapse
and expand fine. However, if I expand a group, and click on a child to
select it, I get the following stack dump:
Thread [<3> main] (Suspended (exception IllegalStateException))
CursorWindow.getLong(int, int) line: 331
SQLiteCursor(AbstractWindowedCursor).getLong(int) line: 108
ContentResolver$CursorWrapperInner(CursorWrapper).getLong(int) line:
127
CursorTreeAdapter$MyCursorHelper.getId(int) line: 435
SongsList
$SetListExpandableListAdapter(CursorTreeAdapter).getChildId(int, int)
line: 172
ExpandableListConnector.getItemId(int) line: 428
AbsListView$PerformClick.run() line: 1635
ViewRoot(Handler).handleCallback(Message) line: 587
ViewRoot(Handler).dispatchMessage(Message) line: 92
Looper.loop() line: 123
ActivityThread.main(String[]) line: 4203
Method.invokeNative(Object, Object[], Class, Class[], Class, int,
boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 521
ZygoteInit$MethodAndArgsCaller.run() line: 791
ZygoteInit.main(String[]) line: 549
NativeStart.main(String[]) line: not available [native method]
My SimpleCursorTreeAdapter:
public class SetListExpandableListAdapter extends
SimpleCursorTreeAdapter {
public SetListExpandableListAdapter(Context context, Cursor
cursor, int groupLayout,
int childLayout, String[] groupFrom, int[] groupTo,
String[] childrenFrom,
int[] childrenTo) {
super(context, cursor, groupLayout, groupFrom, groupTo,
childLayout, childrenFrom,
childrenTo);
}
@Override
protected Cursor getChildrenCursor(Cursor setListCursor) {
Uri.Builder builder =
SetListDefs.Songs.CONTENT_URI.buildUpon();
Uri songsUri = builder.build();
return managedQuery(songsUri, mSongProjection,
"SETLIST = '" +
Long.toString(setListCursor.getLong(mSetListIdColumnIndex)) + "'",
null, null);
}
}
I've yet to be able to set a breakpoint in my code that is reached
before the IllegalStateException gets thrown. Looks to me that I'm
doing what the examples do, but apparently there is something I'm
missing.
Some help would be greatly appreciated.
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