how to refresh the listView using the Cursor Adapter

Question

I have created a ListView using CursorAdapter . Now I am Trying to update the ListView and Refresh the value to the ListView .

Answer 1

In your CursorDemo you have to owerwrite changeCursor() method and reset the Cursor if you have indexer you have to set it's cursor too.

@Override
public void changeCursor(Cursor cursor) {
    mIndexer.setCursor(cursor);
    super.changeCursor(cursor);
}

public void changeCursor (Cursor cursor)

Added in API level 1 Change the underlying cursor to a new cursor. If there is an existing cursor it will be closed.

Parameters cursor The new cursor to be used

Also try for below method if it's apt for your requirement.

Set a FilterQueryProviderand pass your key to that filter.

  final Cursor oldCursor = adapter.getCursor();
    adapter.setFilterQueryProvider(myQueryProvider);
    adapter.getFilter().filter(editTextValue, new FilterListener() {
        public void onFilterComplete(int count) {
            // assuming your activity manages the Cursor 
            // (which is a recommended way)
            stopManagingCursor(oldCursor);
            final Cursor newCursor = adapter.getCursor();
            startManagingCursor(newCursor);
            // safely close the oldCursor
            if (oldCursor != null && !oldCursor.isClosed()) {
                oldCursor.close();
            }
        }
    });

    private FilterQueryProvider myQueryProvider = new FilterQueryProvider() {
        public Cursor runQuery(CharSequence searchKey) {
            // assuming you have your custom DBHelper instance 
            // ready to execute the DB request
            return sqlDataSore.updateData(searchKey);;
        }
    };

PS : The Cursor must include a column named _id or this class will not work see this.