How to get Json response

first of all make sure you have the permission on your manifest:

<uses-permission android:name="android.permission.INTERNET" /> 

Now second is that I suggest you to use Volley for request. It's easy to use and in case you're using Android studio it's much easier to plugin the library. Just add this line to your app.gradle dependencies and you're good to go.

compile 'com.mcxiaoke.volley:library:1.0.17' 

For more information about the mirror library click here

now for sample implementation:

public void SendRequest(View view){ progressDialog.setMessage("Please wait"); progressDialog.show(); String url ="YOUR_URL"; // Request a string response from the provided URL. StringRequest stringRequest = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() { @Override public void onResponse(String response) { Log.e("Message", "Response is: " + response); progressDialog.dismiss(); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { Log.e("Message", "Error"); error.printStackTrace(); progressDialog.dismiss(); } }); stringRequest.setTag("YOUR_TAG"); // Add the request to the RequestQueue. queue.add(stringRequest); } 

and to cancel your request

public void CancelRequest(View view){ queue.cancelAll("YOUR_TAG"); Log.e("Message", "Request cancelled"); } 

For easier handling in case you need to change fragments to be displayed just add this on pause or on stop. Goodluck!

I presume you are using LoopJ library, which is fine, stick with it if you do.

You are using JsonHttpResponseHandler, rather use AsyncHttpResponseHandler. The response will come back as byte array, so you will need to parse it to json. I have created it here as seperate function for easy reusing. For example:

AsyncHttpClient client = new AsyncHttpClient(); client.get("http://192.168.2.2:9999/useraccount/login/dologin", params, new AsyncHttpResponseHandler() { //here is where you should use AsyncHttpResponseHandler instead @Override public void onSuccess(int statusCode, Header[] headers, byte[] response) { Log.d("*** LOG login: " + this.getClass().getName(), "SUCCESS"); JSONObject responseParsed = parseResult(response); //your code continue here, example hide the progress bar } @Override public void onFailure(int statusCode, Header[] headers, byte[] errorResponse, Throwable e) { Log.d("*** LOG error: " + this.getClass().getName(), e.toString()); } }); 

Then here is the example code to parse the reponse byte array. The function is called from inside the previous onSuccess():

 /** * Parse the byte[] that is returned from the server first into a string then cast the results string into a json object. * This is wrapped inside a seperate function so it can be used by multiple calls. * @param response * @return */ JSONObject parseResult(byte[] response) { String str = null; try { str = new String(response, "UTF-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } JSONObject responseToJson = null; try { responseToJson = new JSONObject(str); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } return responseToJson; } 

In order to fetch data from server please follow the steps here

first add this dependency in your build.gradle file and sync it compile 'com.mcxiaoke.volley:library-aar:1.0.0'

Now create a class named Appcontroller which extends Application and add this and import those api which is showing red line

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); int socketTimeOut = 60000; RetryPolicy policy = new DefaultRetryPolicy(socketTimeOut, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT); req.setRetryPolicy(policy); 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); } } public static String getDate() { DateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy"); Date date = new Date(); String formatedDate = dateFormat.format(date); return formatedDate; } } 

now add these two to your Activity

 Response.Listener<String> jsonResponse; Response.ErrorListener errorListener; 

and initialize those in oncreate like this

 jsonResponse = new Response.Listener<String>() { @Override public void onResponse(String response) { Log.d("Response", response); //parseData(response); and store it } }; errorListener = new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError volleyError) { Toast.makeText(getApplicationContext(), "Unable to fetch Data from server", Toast.LENGTH_SHORT).show(); finish(); } }; if (ServerConfig.isNetworkOnline(SplashScreen.this)) { StringRequest strReq = new StringRequest(Request.Method.POST, "your server link", serverResponse, errorListener) { }; AppController.getInstance().getRequestQueue().add(strReq); } else { Toast.makeText(getApplicationContext(), "Please check your network connection", Toast.LENGTH_SHORT).show(); finish(); } 

if problem let me know and dont forget to add Appcontroller to your manifest

<application android:name=".AppController"..../>