Get a ContentResolver within a CursorAdapter

Question

I've recently begun teaching myself Android development. Right now I'm making an app that shows a list of boxes; clicking on a box shows its contents. Each row view in the main list has a "delete" icon next to the box name. My ListAdapter is a subclass of CursorAdapter. In the bindView() method of CursorAdapter, I do the following:

@Override
public void bindView(View view, Context context, Cursor cursor) {
    TextView name = (TextView) view.findViewById(R.id.text_box_name);
    name.setText(cursor.getString(cursor
            .getColumnIndex(DatabaseContract.BoxEntry.NAME)));
    name.setFocusable(false);
    ImageButton delete = (ImageButton) view.findViewById(R.id.button_box_delete);
    delete.setFocusable(false);
    delete.setTag(cursor.getLong(0));
    delete.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
            long id = ((Long) view.getTag());
        }
    });
}

As you can see, I've tagged each ImageButton with the ID of the box it should delete. What I would like to be able to do here is this:

getContentResolver().delete(uri...);

This code would tell my custom ContentProvider to delete that box and all its contents. The obvious problem is that from the context of my CursorAdapter, I can't call getContextResolver. What would be the best way to go about talking to my ContentProvider from within the CursorAdapter? Thanks in advance!

Answer 1

Context contains the method getContentResolver() therefore you can write your bindView as:

@Override
public void bindView(View view, final Context context, Cursor cursor) {
    TextView name = (TextView) view.findViewById(R.id.text_box_name);
    name.setText(cursor.getString(cursor
        .getColumnIndex(DatabaseContract.BoxEntry.NAME)));
    name.setFocusable(false);
    ImageButton delete = (ImageButton) view.findViewById(R.id.button_box_delete);
    delete.setFocusable(false);
    delete.setTag(cursor.getLong(0));
    delete.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
            long id = ((Long) view.getTag());
            context.getContentResolver().delete(uri...);
        }
    });

}

Note that your context must be final in order to reference it in the anonymous inner class.