Wie bekomme ich Antwort von Json mit Volley in Android

Question

Ich bin Post Json Objektdaten mit Volley-Bibliotheken in meiner App, aber ich möchte die Antwort von dieser Anfrage und Update UI nach Antwort und zeigen auch progressdialog während Hintergrundprozess.how Kann ich das bitte sagen?

hier mein Code: -

public void postData() { 
    try { 
     getText();// get Input Text by the user 
     String json;// storing json object 

     JSONObject jsonObject = new JSONObject(); 
     jsonObject.put("agentCode", s_szMobileNumber); 
     jsonObject.put("pin", s_szOldPassword); 
     jsonObject.put("newpin", s_szNewPassword); 
     // 4. convert JSONObject to JSON to String 
     json = jsonObject.toString(); 
     System.out.println("Server Request:-" + json); 
     JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, CServerAPI.s_szChangePassUrl, jsonObject, new Response.Listener<JSONObject>() { 
      @Override 
      public void onResponse(JSONObject response) { 

      } 
     }, new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 

      } 
     }); 

     RequestQueue requestQueue = Volley.newRequestQueue(this); 
     requestQueue.add(jsonObjectRequest); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
} 

public void getText() {// getting text from editText..... 
    s_szMobileNumber = m_MobileEditText.getText().toString().trim();// get mobile number from edit text 
    s_szNewPassword = m_NewPassEditText.getText().toString().trim();// get new pasword from edit Text 
} 

public void getResponse() throws JSONException {// method regarding condition................. 
    if (m_oResponseobject.getString("resultdescription").equalsIgnoreCase("Transaction Successful")) { 
     s_szResponseNewPassword = m_oResponseobject.getString("newpin");// getting new password response from server.... 
     CSnackBar.getInstance().showSnackBarSuccess(findViewById(R.id.mainLayout), "Password Changed Successfully", getApplicationContext()); 
     upDatePassword();// updating password in shared preference....... 

     new Handler().postDelayed(new Runnable() { 
      @Override 
      public void run() { 
       Intent login = new Intent(getApplicationContext(), CLoginScreen.class); 
       startActivity(login); 

      } 
     }, 3500); 


    } else if (m_oResponseobject.getString("resultdescription").equalsIgnoreCase("Subscriber/Agent Not Found")) { 
     CSnackBar.getInstance().showSnackBarError(findViewById(R.id.mainLayout), "User not found", getApplicationContext()); 
    } else if (m_oResponseobject.getString("resultdescription").equalsIgnoreCase("New Pin Can Not Be Empty")) { 
     CSnackBar.getInstance().showSnackBarError(findViewById(R.id.mainLayout), "Enter valid password", getApplicationContext()); 
    } else if (m_oResponseobject.getString("resultdescription").equalsIgnoreCase("Pin Can Not Be Empty")) { 
     CSnackBar.getInstance().showSnackBarError(findViewById(R.id.mainLayout), "Old pin not found", getApplicationContext()); 
    } else if (m_oResponseobject.getString("resultdescription").equalsIgnoreCase("Agentcode Can Not Be Empty")) { 
     CSnackBar.getInstance().showSnackBarError(findViewById(R.id.mainLayout), "Enter valid mobile number", getApplicationContext()); 
    } 
} 

public void upDatePassword() {// Update old password from new password in shared preference ...... 
    m_Preferences = getApplicationContext().getSharedPreferences("LoginData", Context.MODE_PRIVATE); 
    SharedPreferences.Editor editor = m_Preferences.edit(); 
    editor.putString("pin", s_szResponseNewPassword); 
    editor.apply(); 
} 

Answer 1

Versuchen Sie diese auf Ihrem onResponse

@Override 
public void onResponse(JSONObject response) { 
    Log.d("Response", response.toString()); 
    } 

Dies kann hilft Ihnen.

EDIT 1:

try folgenden Code,

import android.app.ProgressDialog; 
import android.content.DialogInterface; 
import android.net.ConnectivityManager; 
import android.net.NetworkInfo; 
import android.os.Bundle; 
import android.support.v7.app.AlertDialog; 
import android.support.v7.app.AppCompatActivity; 

import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import com.android.volley.AuthFailureError; 
import com.android.volley.Request; 
import com.android.volley.RequestQueue; 
import com.android.volley.Response; 
import com.android.volley.VolleyError; 
import com.android.volley.toolbox.StringRequest; 
import com.android.volley.toolbox.Volley; 

import java.util.HashMap; 
import java.util.Map; 

import org.json.JSONException; 
import org.json.JSONObject; 

public class Login extends AppCompatActivity{ 

public static final String LOGIN_URL = "YOUR_URL"; 

ProgressDialog pDialog; 

public static final String KEY_USERNAME="username"; 
public static final String KEY_PASSWORD="password"; 

private EditText editTextUsername; 
private EditText editTextPassword; 
private Button buttonLogin; 

private String username; 
private String password; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.login); 

     editTextUsername = (EditText) findViewById(R.id.editTextUsername); 
     editTextPassword = (EditText) findViewById(R.id.editTextPassword); 

     buttonLogin = (Button) findViewById(R.id.buttonLogin); 

     buttonLogin.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 

       if(isNetworkAvailable()){ 
       userLogin(); 
       } 
       else 
       { 
        showMessageDialog("Error", "Check your Internet Connection..!"); 
       } 
      } 
     }); 
} 

private void userLogin() { 
    username = editTextUsername.getText().toString().trim(); 
    password = editTextPassword.getText().toString().trim(); 

    pDialog = new ProgressDialog(this); 
    pDialog.setMessage("Loading..."); 
    pDialog.show(); 

    StringRequest stringRequest = new StringRequest(Request.Method.POST, LOGIN_URL, 
      new Response.Listener<String>() { 
       @Override 
       public void onResponse(String response) { 

        try { 
         //JSONArray myJSON= new JSONArray(response); 

          JSONObject parentObject = new JSONObject(response); 
          JSONObject childObject = parentObject.getJSONObject("Tracking"); 

           String status = childObject.optString("status"); 
           String type = childObject.optString("type"); 

           //System.out.println("status : " + status); 
           //System.out.println("Type : " + type); 

           if(status.trim().equals("success")) 
           { 
            pDialog.hide(); 
            showMessageDialog("Login", type + " Login Successfully..!"); 
           } 
           else 
           { 
            pDialog.hide(); 
            showMessageDialog("Login", "No Users/Admin were Found..! "); 
           } 


        } catch (JSONException e) { 
         // TODO Auto-generated catch block 
         //e.printStackTrace(); 
         pDialog.hide(); 
         showMessageDialog("JSON Error", "Server Error..! Try after Some Time..!");//e.getMessage()); 
        } 

       } 
      }, 
      new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) 
       { 
        pDialog.hide(); 
        showMessageDialog("Login", "Reponse => " + error.toString()); 

       } 
      }){ 
     @Override 
     protected Map<String, String> getParams() throws AuthFailureError { 
      Map<String,String> map = new HashMap<String,String>(); 
      map.put(KEY_USERNAME,username); 
      map.put(KEY_PASSWORD,password); 
      return map; 
     } 
    }; 

    RequestQueue requestQueue = Volley.newRequestQueue(this); 
    requestQueue.add(stringRequest); 
} 

public void showMessageDialog(String title , String Message) 
{ 
    AlertDialog dialog = new AlertDialog.Builder(Login.this) 
    .setTitle(title) 
    .setMessage(Message) 
    .setPositiveButton("Ok", new DialogInterface.OnClickListener() { 

     @Override 
     public void onClick(DialogInterface dialog, int which) { 
      // TODO Auto-generated method stub 
      dialog.dismiss(); 

     } 
    }) 

    .show(); 


} 

    private boolean isNetworkAvailable() { 
     ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE); 
     NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo(); 
     return activeNetworkInfo != null && activeNetworkInfo.isConnected(); 
    } 

}