JSON数组在android中自动完成文本视图

Question

我正在开发一个Android应用程序,我必须解析一个Json数组并使其适应自动完整的文本视图.我从我的服务器得到正确的响应,因为我是一个更新的android和Json解析我没有得到如何解析该json数组到数组适配器并将其添加到自动完整文本视图.

任何人都可以建议我怎么做..？

回复如下.

[
{
city: "bng",
area: "anagar",
id: 510000032
},
{
city: "bng",
area: "bnagar",
id: 510000021
},
{
city: "bng",
area: "cnagar",
id: 510000037
}
] 

我想在我的自动完整文本视图中匹配区域.

我在布局文件中创建了自动完整文本视图.

这就是我的尝试方式

    public class MainActivity extends Activity {

     List<String> responseList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        AutoCompleteTextView auto1 = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);

        new HttpGetTask().execute();

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_expandable_list_item_2, responseList);
        auto1.setAdapter(adapter);
    }

    private class HttpGetTask extends AsyncTask<Void, Void, String> {

        String URL = "http://xyz/cities.json?app_id=test";
        AndroidHttpClient mClient = AndroidHttpClient.newInstance("");

        @Override
        protected String doInBackground(Void... params) {
            HttpGet request = new HttpGet(URL);
            ResponseHandler<String> responseHandler = new BasicResponseHandler();
            try {
                return mClient.execute(request, responseHandler);
            } catch (ClientProtocolException exception) {
                exception.printStackTrace();
            } catch (IOException exception) {
                exception.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            try {
                JSONArray json = new JSONArray(result);
                Log.v("ResponseCity", result);

                responseList = new ArrayList<String>();

                for (int i = 0; i < json.length(); i++) {
                    final JSONObject e = json.getJSONObject(i);
                    String name = e.getString("area");
                    responseList.add(name);

                }
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            if (null != mClient)
                mClient.close();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}

任何建议都表示赞赏......

Answer 1

添加响应字符串成List<String>这样

 List<String> responseList = new ArrayList<String>();

 for (int i = 0; i < json.length(); i++) {
    final JSONObject e = json.getJSONObject(i);
     String name = e.getString("area");
     responseList.add(name);
  }

现在,你可以设置响应列表AutoCompleteTextView这样

 ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_dropdown_item_1line, responseList);
 AutoCompleteTextView textView = (AutoCompleteTextView)
            findViewById(R.id.autoCompleteTextView1);
 textView.setAdapter(adapter);