Question

在我的应用程序解析json数据后，我希望借助Intent将数据从一个活动发送到另一个活动。但在我的第二个活动中，它只显示最后一个数组json数据。它没有在第二个活动中显示所有json解析数据。

第一项活动：

  private    class GetData extends AsyncTask<String, Void, JSONObject> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();

        progressDialog = ProgressDialog.show(SearchActivity.this, "", "");
        }

        @Override
        protected JSONObject doInBackground(String... params) {
            String response;

            try {
                HttpClient httpclient = new DefaultHttpClient();
                HttpPost httppost = new HttpPost(params[0]);
                List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(3);
                 nameValuePair.add(new BasicNameValuePair("FromCityid",fromcity_bus));
                 nameValuePair.add(new BasicNameValuePair("Tocityid",tocity_bus));
                 nameValuePair.add(new BasicNameValuePair("DOJ",journey_bus));
                 httppost.setEntity(new UrlEncodedFormEntity(nameValuePair));
                HttpResponse responce = httpclient.execute(httppost);

                HttpEntity httpEntity = responce.getEntity();

                response = EntityUtils.toString(httpEntity);
                Log.d("response is", response);

                return new JSONObject(response);

            } catch (Exception ex) {

                ex.printStackTrace();

            }

            return null;
        }

        @Override
        protected void onPostExecute(JSONObject result) 
        {
            super.onPostExecute(result);
           // Log.v("TAG_RESULT",""+result);

            progressDialog.dismiss();

            if(result != null)
            {
                try
                {
                    JSONObject jobj = result.getJSONObject("Response");
                    String message = jobj.getString("Message");
                    String issuceess = jobj.getString("IsSuccess");
                    Log.v("TAG_Message",""+message);
                    Log.v("TAG_Message",""+issuceess);
                    if(issuceess.equals("true"))

                    {
                         JSONArray routearray = result.getJSONArray("Route");
                         for(int i = 0; i<routearray.length(); i++)
                         {
                              companyid = routearray.getJSONObject(i).getString("CompanyId");
                            CompanyName = routearray.getJSONObject(i).getString("CompanyName"); 
                            deptime = routearray.getJSONObject(i).getString("DepTime");
                             routeScheduleId = routearray.getJSONObject(i).getString("RouteScheduleId");  
                            arrtime =routearray.getJSONObject(i).getString("ArrTime");
                             fare =routearray.getJSONObject(i).getString("Fare");  
                            hasac = routearray.getJSONObject(i).getString("HasAC");
                             hasnac = routearray.getJSONObject(i).getString("HasNAC");  
                            hasseater = routearray.getJSONObject(i).getString("HasSeater");
                            hassleeper = routearray.getJSONObject(i).getString("HasSleeper"); 
                             isvolvo = routearray.getJSONObject(i).getString("IsVolvo");  
                           buslabel = routearray.getJSONObject(i).getString( "BusLabel"); 
                           avaliableseats = routearray.getJSONObject(i).getString("AvailableSeats"); 
                          bustypename = routearray.getJSONObject(i).getString("BusTypeName"); 

                         Intent intent=new Intent(SearchActivity.this,FromtoActivity.class);
                         intent.putExtra("COMPANYNAME", CompanyName);
                         Log.v("TAG_COMPANYNAME",""+CompanyName);
                         intent.putExtra("COMPANYID", companyid);
                         intent.putExtra("BUSFARE", fare);
                         intent.putExtra("BUSLABEL", buslabel);
                         intent.putExtra("BUSTYPENAME", bustypename);
                         intent.putExtra("AVALIABLESEATS", avaliableseats);
                        // intent.putExtra("arrayListIdentifier",);
                                    startActivity(intent);



                         }

                    }


                }   
                catch (Exception e) 
                {
                    e.printStackTrace();
                }
            }

secondActivity：

   Intent intent = getIntent();
   String company_name = intent.getStringExtra("COMPANYNAME");
   String company_id = intent.getStringExtra("COMPANYID");
   String bus_fare = intent.getStringExtra("BUSFARE");
   String bus_typename = intent.getStringExtra("BUSTYPENAME");
   String bus_label = intent.getStringExtra("BUSLABEL");
   String avaliable_seats = intent.getStringExtra("AVALIABLESEATS");

   BusData bs = new BusData();

   bs.setCompanyname(company_name);
   bs.setCompanyid(company_id);
   bs.setFare(bus_fare);
   bs.setBuslabel(bus_label);
   bs.setBustypename(bus_typename);
   bs.setAvaliableseats(avaliable_seats);
   bdata.add(bs);
   BusDataAdapter  adapter = new BusDataAdapter(this, bdata);
   fromto.setAdapter(adapter);

fromto是一个列表视图。

bdata的大小为1。

Answer 1

使用Bundle将值从当前活动传递到下一个活动

传递数据的当前活动

  if(issuceess.equals("true"))
 {

     Intent intent=new Intent(SearchActivity.this,FromtoActivity.class);
     intent.putExtra("json_objcet", result.toString());//result is a json object
     startActivity(intent);

 }

在接收数据的下一个活动中

 Intent intent = getIntent();
     String json_object = intent.getStringExtra("json_objcet");
     try
     {




     JSONObject  result =  new JSONObject(json_object);
     JSONArray routearray = result.getJSONArray("Route");
     for (int i = 0; i < routearray.length(); i++) {

         String companyid = routearray.getJSONObject(i).getString("CompanyId");
         String CompanyName = routearray.getJSONObject(i).getString("CompanyName");
         String deptime = routearray.getJSONObject(i).getString("DepTime");
         String routeScheduleId = routearray.getJSONObject(i).getString("RouteScheduleId");
         String arrtime = routearray.getJSONObject(i).getString("ArrTime");
         String fare = routearray.getJSONObject(i).getString("Fare");
         String hasac = routearray.getJSONObject(i).getString("HasAC");
         String hasnac = routearray.getJSONObject(i).getString("HasNAC");
         String hasseater = routearray.getJSONObject(i).getString("HasSeater");
         String hassleeper = routearray.getJSONObject(i).getString("HasSleeper");
         String isvolvo = routearray.getJSONObject(i).getString("IsVolvo");
         String buslabel = routearray.getJSONObject(i).getString("BusLabel");
         String avaliableseats = routearray.getJSONObject(i).getString("AvailableSeats");
         String bustypename = routearray.getJSONObject(i).getString("BusTypeName");

         BusData bs = new BusData();                            
         bs.setCompanyname(CompanyName);
         bs.setCompanyid(companyid);
         bs.setFare(fare);
         bs.setBuslabel(buslabel);
         bs.setBustypename(bustypename);
         bs.setAvaliableseats(avaliableseats);

         bdata.add(bs);
        }



     BusDataAdapter  adapter = new BusDataAdapter(this, bdata);
     fromto.setAdapter(adapter);
     }




     catch (Exception e) 
     {
         e.printStackTrace();
     }

Answer 2

试试这段代码第一项活动

private    class GetData extends AsyncTask<String, Void, JSONObject> {

    ArrayList<BusData> arrayBusData = new ArrayList<BusData>();
    @Override
    protected void onPreExecute() {
        super.onPreExecute();

     progressDialog = ProgressDialog.show(SearchActivity.this, "", "");
    }

    @Override
    protected JSONObject doInBackground(String... params) {
        String response;

        try {
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost(params[0]);
            List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(3);
             nameValuePair.add(new BasicNameValuePair("FromCityid",fromcity_bus));
             nameValuePair.add(new BasicNameValuePair("Tocityid",tocity_bus));
             nameValuePair.add(new BasicNameValuePair("DOJ",journey_bus));
             httppost.setEntity(new UrlEncodedFormEntity(nameValuePair));
            HttpResponse responce = httpclient.execute(httppost);

            HttpEntity httpEntity = responce.getEntity();

            response = EntityUtils.toString(httpEntity);
            Log.d("response is", response);

            return new JSONObject(response);

        } catch (Exception ex) {

            ex.printStackTrace();

        }

        return null;
    }

    @Override
    protected void onPostExecute(JSONObject result) 
    {
        super.onPostExecute(result);
       // Log.v("TAG_RESULT",""+result);

        progressDialog.dismiss();

        if(result != null)
        {
            try
            {
                JSONObject jobj = result.getJSONObject("Response");
                String message = jobj.getString("Message");
                String issuceess = jobj.getString("IsSuccess");
                Log.v("TAG_Message",""+message);
                Log.v("TAG_Message",""+issuceess);
                if(issuceess.equals("true"))

                {
                     JSONArray routearray = result.getJSONArray("Route");
                     for(int i = 0; i<routearray.length(); i++)
                     {
                          companyid = routearray.getJSONObject(i).getString("CompanyId");
                        CompanyName = routearray.getJSONObject(i).getString("CompanyName"); 
                        deptime = routearray.getJSONObject(i).getString("DepTime");
                         routeScheduleId = routearray.getJSONObject(i).getString("RouteScheduleId");  
                        arrtime =routearray.getJSONObject(i).getString("ArrTime");
                         fare =routearray.getJSONObject(i).getString("Fare");  
                        hasac = routearray.getJSONObject(i).getString("HasAC");
                         hasnac = routearray.getJSONObject(i).getString("HasNAC");  
                        hasseater = routearray.getJSONObject(i).getString("HasSeater");
                        hassleeper = routearray.getJSONObject(i).getString("HasSleeper"); 
                         isvolvo = routearray.getJSONObject(i).getString("IsVolvo");  
                       buslabel = routearray.getJSONObject(i).getString( "BusLabel"); 
                       avaliableseats = routearray.getJSONObject(i).getString("AvailableSeats"); 
                      bustypename = routearray.getJSONObject(i).getString("BusTypeName"); 

                      BusData bData = new BusData(companyid,CompanyName,fare,buslabel,bustypename,avaliableseats,);
                      arrayBusData.add(bData);




                     }
                     Intent intent=new Intent(SearchActivity.this,FromtoActivity.class);
                    Bundle bundle = new Bundle();
                    bundle.putSerializable("bus_data", arrayBusData);
                    intent.putExtras(bundleObject);
                    startActivity(intent);
                }


            }   
            catch (Exception e) 
            {
                e.printStackTrace();
            }
        }

第二项活动

      ArrayList<BusData> arrayBusData = new ArrayList<BusData>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    Bundle bundleObject = getIntent().getExtras();
    arrayBusData = (ArrayList<BusData>) bundleObject
            .getSerializable("requestProductItem");

    BusDataAdapter  adapter = new BusDataAdapter(this, arrayBusData);
       fromto.setAdapter(adapter);
}

BusData类还在BusData类中创建构造函数

 public class BusData implements Serializable{

/**
 * 
 */
private static final long serialVersionUID = 1L;

如何将我的所有json解析数据从一个活动发送到另一个具有意图的活动

2 个答案: