動態填充AutoCompleteTextView建議

Question

我創建了一個AsyncTask以在每次AutoCompleteTextView發生更改時從URL提取建議。 它應該可以正常工作，我不知道問題出在哪里。

片段（帶有AutoCompleteTextView）：

atv = (AutoCompleteTextView) view.findViewById(R.id.atvMovieName);
// adding event listeners for text on the auto complete text view
atv.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {

    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
         SuggestionFetcher fetcher = new SuggestionFetcher(getActivity(), atv);
         String title = s.toString().replace(" ", "%20");
         try {
             URL url = new URL("http://imdbapi.com/?s=" + title + "&r=xml");
             fetcher.execute(url);
         } catch (MalformedURLException e) {
             e.printStackTrace();
         }
    }

    @Override
    public void afterTextChanged(Editable s) {

    }
});

SuggestionFetcher：

// suggestion titles will be saved here
private Stack<String> suggestions;

// this is the auto complete text view we will be handling
private AutoCompleteTextView atv;
// and it's adapter
private ArrayAdapter<String> adapter;
// context of the activity or fragment
private Context context;

private static final String TAG = "Suggestion Fetcher";

public SuggestionFetcher(Context c, AutoCompleteTextView atv) {
    this.atv = atv;
    this.context = c;
    this.suggestions = new Stack<String>();
}

@Override
protected Stack<String> doInBackground(URL... params) {
    // get the data...
    this.suggestions.add(title);

    return this.suggestions;
}

@Override
protected void onPostExecute(Stack<String> strings) {
    super.onPostExecute(strings);
    Log.v(TAG, "finished with the data: " + strings); // works, shows the results I wanted
    // update the list view
    this.adapter = new ArrayAdapter<String>(this.context, android.R.layout.simple_list_item_1, strings);
    this.atv.setAdapter(this.adapter);
}

正如我在評論中所寫，它實際上是在獲取數據，但沒有任何建議。

Answer 1

我要執行相同的任務，為此我在edittext（在其中輸入url或搜索詞的地方）下面使用了一個隱藏的listview，並且將根據textexter中editext的更改從api中填充listview。您需要另一種解決方案。