Fetch AutoCompleteTextView suggestions from service in separate thread

Question

For my AutoCompleteTextView I need to fetch the data from a webservice. As it can take a little time I do not want UI thread to be not responsive, so I need somehow

Answer 1

EDITED: Added naive way to avoid the dropdown showing when you click a suggestion.

I do something like this in my app:

private AutoCompleteTextView mSearchbar;
private ArrayAdapter mAutoCompleteAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    mAutoCompleteAdapter = new ArrayAdapter(this, android.R.layout.simple_dropdown_item_1line);
    mSearchbar = (AutoCompleteTextView) findViewById(R.id.searchbar);
    mSearchbar.setThreshold(3);
    mSearchbar.setAdapter(mAutoCompleteAdapter);
    mSearchbar.addTextChangedListener(new TextWatcher() {

        private boolean shouldAutoComplete = true;

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            shouldAutoComplete = true;
            for (int position = 0; position < mAutoCompleteAdapter.getCount(); position++) {
                if (mAutoCompleteAdapter.getItem(position).equalsIgnoreCase(s.toString())) {
                    shouldAutoComplete = false;
                    break;
                }
            }

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
            if (shouldAutoComplete) {
                new DoAutoCompleteSearch().execute(s.toString());
            }
        }
    }
}

private class DoAutoCompleteSearch extends AsyncTask> {
    @Override
    protected ArrayList doInBackground(String... params) {
        ArrayList autoComplete = new ArrayList();
        //do autocomplete search and stuff.
        return autoComplete;
    }

    @Override
    protected void onPostExecute(ArrayList result) {
        mAutoCompleteAdapter.clear();
        for (String s : result)
            mAutoCompleteAdapter.add(s);
    }
}