Refresh a SimpleCursorAdapter after performing work on a non-UI thread

Question

I\'m trying to call .notifyDataSetChange() on a SimpleCursorAdapter displayed in a ListView from an XML-parsing non-UI thread and can\'t for the life of me figure out how. I

Answer 1

No need to create a new adapter...

.notifyDataSetChanged() should be called only in case the data rows actually changed (inserted or deleted rows), in case you just updated the values on rows a simple call to requery() on your cursor should be enough:

adapter.getCursor().requery();

Edit: by your comment I see that you have in fact a compilation problem...

You must declare the adapter as a class member (before/after mHandler declare it: private SimpleCursorAdapter adapter)

Then when you initialize it, replace

SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,
    R.layout.directory_people_item, mCursor,
    new String[]{
        //snip
        new int[]{
        //snip
); 

with:

adapter = new SimpleCursorAdapter(this,
    R.layout.directory_people_item, mCursor,
    new String[]{
        //snip
        new int[]{
        //snip
); 

Answer 2

Create a new adapter when the query is finished and set it your listview to give a general idea below is an example of gridview change it accordingly to suit your needs

globalAdapter = new GridImageAdapter(getApplicationContext());
globalAdapter.notifyDataSetChanged();
grid.setAdapter(globalAdapter);
grid.invalidateViews();