import com.dreamfactory.*;
import java.util.List;
class GetRecordsAsyncTask extends AsyncTask<Void, Void, List<Record>> {
@Override
protected List<Record> doInBackground(Void... params) {
    DbApi api = new DbApi();
    api.addHeader("X-DreamFactory-Application", "YOUR_KEY");
    try {
        return api.getRecords("todo");
    }
    catch (Exception e) {
        Log.d("GetRecordsAsyncTask", e.getMessage());
        return null;
    }
}

@Override
protected void onPostExecute(List<Record> records) {
    for(Record record : records) {
        Log.d("GetRecordsAsyncTask", record.toString());
    }
}
}