Question

我使用aysctask从Web服务获取数据。我想要从字符串中获得的任何数据，该数据添加到ArrayList markerPoints arraylist。这是在oncreate声明，所以我如何将数据添加到arraylist.pls帮助我，我是Android的新手。提前谢谢。

           protected void onPostExecute(String response) {


      super.onPostExecute(response);     

          try {

            JSONObject jsonResponse = new JSONObject(response);

            JSONObject jArray = jsonResponse.getJSONObject("data");

            JSONObject jstart = jArray.getJSONObject("start");

            JSONObject jend = jArray.getJSONObject("end");

            JSONObject jcureent = jArray.getJSONObject("current");                  

            for (int i = 0; i < jArray.length(); i++) {

                startlat=jstart.getString("lat");

                startlong=jstart.getString("long");

                endtlat=jend.getString("lat");

                endlong=jend.getString("long");

                currentlat=jcureent.getString("lat");

                currentlong=jcureent.getString("long");

        }

在oncreate我声明了， markerPoints = new ArrayList（）;我创建了一个arraylist，我想要从存储到该数组的json获得的任何数据。谢谢

Answer 1

将ArrayList声明为全局变量：


    public class MainActivity extends Activity {

        private ArrayList myArrayList;

        protected void onCreate(Bundle bundle) {
            ...
            myArrayList = new ArrayList();

            ...
        }
        private final class MyAsyncTask extends AsyncTask {
             ...

             protected void onPostExecute(String response) {
                super.onPostExecute(response);     

                try {

                 JSONObject jsonResponse = new JSONObject(response);
                 JSONObject jArray = jsonResponse.getJSONObject("data");
                 JSONObject jstart = jArray.getJSONObject("start");
                 JSONObject jend = jArray.getJSONObject("end");
                 JSONObject jcureent = jArray.getJSONObject("current"); 

                 for (...  ) {
                    myArrayList.add(jstart.getString("lat"));
                     myArrayList.add(jstart.getString("long"));
                     myArrayList.add(jend.getString("lat"));
                     myArrayList.add(jend.getString("long"));
                     myArrayList.add(jcureent.getString("lat"));
                     myArrayList.add(jcureent.getString("long"));

                  } 
                } catch(...) { }

     }

如何将字符串中的recived数据发送到oncreate方法是android？

1 个答案: