【发布时间】:2017-01-03 15:43:36
【问题描述】:
public class MainActivity extends AppCompatActivity {
private AutoCompleteTextView autoCompleteTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
autoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
new HttpGetTask().execute("http://192.168.0.107/abc/translator.php");
}
public class HttpGetTask extends AsyncTask<String, String, List<TranslatorModel>> {
@Override
protected List<TranslatorModel> doInBackground(String... params) {
HttpURLConnection connection = null;
BufferedReader reader = null;
try {
URL url = new URL(params[0]);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(stream));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
String finalJson = buffer.toString();
JSONArray parentArray = new JSONArray(finalJson);
List<TranslatorModel> translatorModelList = new ArrayList<>();
for(int i= 0; i<parentArray.length();i++) {
JSONObject finalObject = parentArray.getJSONObject(i);
TranslatorModel translatorModel = new TranslatorModel();
translatorModel.setEnglish(finalObject.getString("englishSentence"));
translatorModelList.add(translatorModel);
}
return translatorModelList;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
} finally {
if (connection != null) {
connection.disconnect();
}
try {
if (reader != null) {
reader.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onPostExecute(List<TranslatorModel> data) {
super.onPostExecute(data);
}
}
}
englishSentence 是一个字符串 json 对象。 setter 和 getter 方法在 TranslatorModel 类中定义。我想在我的 autocompleteTextView 中显示 englishSentence 值
问题: 哪个代码将用于在 autocompletetextview 中显示数据? 在哪里添加数组适配器类以及哪些代码可以工作? 哪些代码将用于 onPostExecute 方法?
【问题讨论】:
-
使用 MainActivity.this 。
标签: json arraylist android-asynctask android-arrayadapter autocompletetextview