我打了一个服务。我没有获得JSON数据列表，而在log cat中它显示所有数据即将到来
我正在点击一项服务。我没有获得JSON数据列表，而在log cat中它显示所有数据即将到来。
我正在使用post service来设置param值。在log cat中我得到了所有数据。但我希望当我点击Leads按钮时，它应该是来自logcat的json数据。我正在粘贴Json数据，logcat，图像和代码。
我坚持这个任何人请帮助我为什么我没有得到json数据。
当我点击Leads按钮时，您可以在图像中看到我在吐司中收到错误。
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonArrayRequest;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import tatahousingleads.com.tatahousingleads.app.AppController;
public class MainActivity extends Activity {
// json array response url
private String urlJsonArry = "http://tatahousing.in/UtilityApp/report/filter-leads.php";
private static String TAG = MainActivity.class.getSimpleName();
private Button btnMakeObjectRequest, btnMakeArrayRequest;
// Progress dialog
private ProgressDialog pDialog;
private TextView txtResponse;
// temporary string to show the parsed response
private String jsonResponse;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// btnMakeObjectRequest = (Button) findViewById(R.id.btnObjRequest);
btnMakeArrayRequest = (Button) findViewById(R.id.btnArrayRequest);
txtResponse = (TextView) findViewById(R.id.txtResponse);
pDialog = new ProgressDialog(this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
btnMakeArrayRequest.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// making json array request
makeJsonArrayRequest();
new SendDeviceID().execute();
}
});
}
private class SendDeviceID extends AsyncTask<String, String, String>
{
String res;
InputStream inputStream = null;
@Override
protected void onPreExecute()
{
super.onPreExecute();
}
@Override
protected String doInBackground(String... params)
{
ArrayList<NameValuePair> param = new ArrayList<NameValuePair>();
param.add(new BasicNameValuePair("search_type","bookings"));
// param.add(new BasicNameValuePair("leads","leads"));
try {
try {
// Set up HTTP post
// HttpClient is more then less deprecated. Need to change to URLConnection
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(urlJsonArry);
httpPost.setEntity(new UrlEncodedFormEntity(param));
System.out.println(" PARAM " + param);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
// Read content & Log
inputStream = httpEntity.getContent();
} catch (UnsupportedEncodingException e1) {
Log.e("Unsupported Exception", e1.toString());
e1.printStackTrace();
} catch (ClientProtocolException e2) {
Log.e("ClientProtocolException", e2.toString());
e2.printStackTrace();
} catch (IllegalStateException e3) {
Log.e("IllegalStateException", e3.toString());
e3.printStackTrace();
} catch (IOException e4) {
Log.e("IOException", e4.toString());
e4.printStackTrace();
}
// Convert response to string using String Builder
try {
BufferedReader bReader = new BufferedReader(new InputStreamReader(inputStream, "utf-8"), 8);
StringBuilder sBuilder = new StringBuilder();
String line = null;
while ((line = bReader.readLine()) != null) {
sBuilder.append(line + "\n");
}
inputStream.close();
res = sBuilder.toString();
} catch (Exception e) {
Log.e("String/BufferReader", "Error converting" + e.toString());
}
}
catch (Exception e)
{
e.printStackTrace();
}
return res;
}
@Override
protected void onPostExecute(String s)
{
super.onPostExecute(s);
if(s != null)
{
if(!s.equals(""))
{
System.out.println(" Leads: " + s);
}
}
}
}
private void makeJsonArrayRequest() {
showpDialog();
JsonArrayRequest req = new JsonArrayRequest(urlJsonArry,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
try {
// Parsing json array response
// loop through each json object
jsonResponse = "";
for (int i = 0; i < response.length(); i++) {
JSONObject leads = (JSONObject) response
.get(i);
String id = leads.getString("bookings");
}
txtResponse.setText(jsonResponse);
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
"Error: " + e.getMessage(),
Toast.LENGTH_LONG).show();
}
hidepDialog();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_SHORT).show();
hidepDialog();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(req);
}
private void showpDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hidepDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
}
Appcontroller.java
import android.app.Application;
import android.text.TextUtils;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.toolbox.Volley;
public class AppController extends Application {
public static final String TAG = AppController.class.getSimpleName();
private RequestQueue mRequestQueue;
private static AppController mInstance;
@Override
public void onCreate() {
super.onCreate();
mInstance = this;
}
public static synchronized AppController getInstance() {
return mInstance;
}
public RequestQueue getRequestQueue() {
if (mRequestQueue == null) {
mRequestQueue = Volley.newRequestQueue(getApplicationContext());
}
return mRequestQueue;
}
public <T> void addToRequestQueue(Request<T> req, String tag) {
req.setTag(TextUtils.isEmpty(tag) ? TAG : tag);
getRequestQueue().add(req);
}
public <T> void addToRequestQueue(Request<T> req) {
req.setTag(TAG);
getRequestQueue().add(req);
}
public void cancelPendingRequests(Object tag) {
if (mRequestQueue != null) {
mRequestQueue.cancelAll(tag);
}
}
}
activity_main.xml中
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
android:scrollbarStyle="insideInset"
android:scrollbars="vertical" >
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/btnArrayRequest"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="50dp"
android:paddingLeft="15dp"
android:paddingRight="15dp"
android:text="Leads"
/>
<TextView
android:id="@+id/txtResponse"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/btnArrayRequest"
android:layout_marginTop="20px"
android:padding="20dp" />
</LinearLayout>
</ScrollView>
logcat
I/System.out: Leads: {"success":"true","total":4,"bookings":[{"refno":"ARI1003631","name":"Lalat Shekhar Samal","email":"lalat.sekhar11@gmail.com","address":"Bhubaneswar","city":"Bhubaneswar","state":"Odisha","country":"India","nationality":"Indian","panno":"DWFPS4677G","passportno":"","contactno":"+91 7787825750","unittype":"AC 2 BHK Small 1099 sqft","project":"Ariana","trn_amount":"","dateofbirth":"16-05-1988","trn_transactionid":"","platform":"UtilityApp-Android","success":""},{"refno":"ARI1003642","name":"Sekhar","email":"lalat.sekhar11@gmail.com","address":"Kolkata","city":"Kolkata","state":"Westbengal","country":"India","nationality":"Indian","panno":"DWDAH5455G","passportno":"","contactno":"+91 7787825750","unittype":"1 BHK Small 657 sqft","project":"Ariana","trn_amount":"","dateofbirth":"16-05-1988","trn_transactionid":"","platform":"UtilityApp-Android","success":""},{"refno":"ARAGUR1003649","name":"Vikramjit Roy","email":"email@vikramjietroy.com","address":"C-251, Florence Marvel\r\nSushant Lok 3, Sector 57","city":"Gurgaon","state":"Haryana","country":"India","nationality":"Indian","panno":"ADCPR5412J","passportno":"","contactno":"+91 8800993333","unittype":"Plot (538 Sq. Yd.)","project":"Arabella","trn_amount":"50000.00","dateofbirth":"01-12-1970","trn_transactionid":"FAM24305385638","platform":"UtilityApp-IOS","success":"Success"},{"refno":"GOA1004116","name":"DrPragati Sinha","email":"drpragatisinha@yahoo.co.in","address":"DHARHARA HOUSE.BANK ROAD.","city":"PATNA","state":"Bihar","country":"India","nationality":"Indian","panno":"AKPPS1958E","passportno":"","contactno":"+91 9835020007","unittype":"2 BHK","project":"Rivage","trn_amount":"30000.00","dateofbirth":"27-10-1951","trn_transactionid":"GHMP4548172054","platform":"UtilityIphoneApp-Booking","success":"PGS10001-Success"}]}
06-17 14:59:18.601 25789-25789/tatahousingleads.com.tatahousingleads D/Volley: [1] 3.onErrorResponse: MainActivity
Json数据
{
"success": "true",
"total": 4,
"bookings": [{
"refno": "ARI1003631",
"name": "Lalat Shekhar Samal",
"email": "lalat.sekhar11@gmail.com",
"address": "Bhubaneswar",
"city": "Bhubaneswar",
"state": "Odisha",
"country": "India",
"nationality": "Indian",
"panno": "DWFPS4677G",
"passportno": "",
"contactno": "+91 7787825750",
"unittype": "AC 2 BHK Small 1099 sqft",
"project": "Ariana",
"trn_amount": "",
"dateofbirth": "16-05-1988",
"trn_transactionid": "",
"platform": "UtilityApp-Android",
"success": ""
}, {
"refno": "ARI1003642",
"name": "Sekhar",
"email": "lalat.sekhar11@gmail.com",
"address": "Kolkata",
"city": "Kolkata",
"state": "Westbengal",
"country": "India",
"nationality": "Indian",
"panno": "DWDAH5455G",
"passportno": "",
"contactno": "+91 7787825750",
"unittype": "1 BHK Small 657 sqft",
"project": "Ariana",
"trn_amount": "",
"dateofbirth": "16-05-1988",
"trn_transactionid": "",
"platform": "UtilityApp-Android",
"success": ""
}, {
"refno": "ARAGUR1003649",
"name": "Vikramjit Roy",
"email": "email@vikramjietroy.com",
"address": "C-251, Florence Marvel\r\nSushant Lok 3, Sector 57",
"city": "Gurgaon",
"state": "Haryana",
"country": "India",
"nationality": "Indian",
"panno": "ADCPR5412J",
"passportno": "",
"contactno": "+91 8800993333",
"unittype": "Plot (538 Sq. Yd.)",
"project": "Arabella",
"trn_amount": "50000.00",
"dateofbirth": "01-12-1970",
"trn_transactionid": "FAM24305385638",
"platform": "UtilityApp-IOS",
"success": "Success"
}, {
"refno": "GOA1004116",
"name": "DrPragati Sinha",
"email": "drpragatisinha@yahoo.co.in",
"address": "DHARHARA HOUSE.BANK ROAD.",
"city": "PATNA",
"state": "Bihar",
"country": "India",
"nationality": "Indian",
"panno": "AKPPS1958E",
"passportno": "",
"contactno": "+91 9835020007",
"unittype": "2 BHK",
"project": "Rivage",
"trn_amount": "30000.00",
"dateofbirth": "27-10-1951",
"trn_transactionid": "GHMP4548172054",
"platform": "UtilityIphoneApp-Booking",
"success": "PGS10001-Success"
}]
}][1]][1]
2 个答案:
答案 0 :(得分：0)
您已经制作了JSONObject请求而不是JsonArray请求。
JsonObjectRequest req = new JsonObjectRequest (urlJsonArry,
new Response.Listener<JSONObject>()
答案 1 :(得分：0)
问题是你正在制作一个JSONArray请求，而不是一个应该是正确实现的JsonObjectRequest。
我还建议您使用Gson解析Json，使其更容易解析。
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