修正方法：org.json.JSONException：java.lang.String型の値をJSONObjectに変換できません

Question

まずは、この種のものに新しいものを追加しました。登録活動のアプリがあります。成功した/失敗した試行のあと、すべてのメッセージはメッセージを除いて正常に動作します。 Androidのスタジオは私に

JSONException: Value of type java.lang.String cannot be converted to JSONObject 

を与え、私は完全にそれを修正する方法は考えています。少なくともここを助けることができる人は誰ですか？ありがとう！次の行で

package info.logirej.activity; 

import android.app.Activity; 
import android.app.ProgressDialog; 
import android.content.Intent; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 

import com.android.volley.Request.Method; 
import com.android.volley.Response; 
import com.android.volley.VolleyError; 
import com.android.volley.toolbox.StringRequest; 

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

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

import info.logirej.R; 
import info.logirej.app.AppConfig; 
import info.logirej.app.AppController; 
import info.logirej.helper.SQLiteHandler; 
import info.logirej.helper.SessionManager; 

public class RegisterActivity extends Activity { 
    private static final String TAG = RegisterActivity.class.getSimpleName(); 
    private Button btnRegister; 
    private Button btnLinkToLogin; 
    private EditText inputImie; 
    private EditText inputNazwisko; 
    private EditText inputEmail; 
    private EditText inputPassword; 
    private EditText inputPin; 
    private EditText inputTelefon; 
    private ProgressDialog pDialog; 
    private SessionManager session; 
    private SQLiteHandler db; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_register); 

     inputImie = (EditText) findViewById(R.id.imie); 
     inputNazwisko = (EditText) findViewById(R.id.nazwisko); 
     inputEmail = (EditText) findViewById(R.id.email); 
     inputPassword = (EditText) findViewById(R.id.password); 
     inputPin = (EditText) findViewById(R.id.pin); 
     inputTelefon = (EditText) findViewById(R.id.telefon); 
     btnRegister = (Button) findViewById(R.id.btnRegister); 
     btnLinkToLogin = (Button) findViewById(R.id.btnLinkToLoginScreen); 

     // Progress dialog 
     pDialog = new ProgressDialog(this); 
     pDialog.setCancelable(false); 

     // Session manager 
     session = new SessionManager(getApplicationContext()); 

     // SQLite database handler 
     db = new SQLiteHandler(getApplicationContext()); 

     // Check if user is already logged in or not 
     if (session.isLoggedIn()) { 
      // User is already logged in. Take him to main activity 
      Intent intent = new Intent(RegisterActivity.this, 
        MainActivity.class); 
      startActivity(intent); 
      finish(); 
     } 

     // Register Button Click event 
     btnRegister.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View view) { 
       String imie = inputImie.getText().toString().trim(); 
       String nazwisko = inputNazwisko.getText().toString().trim(); 
       String email = inputEmail.getText().toString().trim(); 
       String password = inputPassword.getText().toString().trim(); 
       String pin = inputPin.getText().toString().trim(); 
       String telefon = inputTelefon.getText().toString().trim(); 

       if (!imie.isEmpty() && !nazwisko.isEmpty() && !email.isEmpty() && !password.isEmpty() && !pin.isEmpty() && !telefon.isEmpty()) { 
        registerUser(imie, nazwisko, email, password, pin, telefon); 
       } else { 
        Toast.makeText(getApplicationContext(), 
          "Prosze wprowadzić dane!", Toast.LENGTH_LONG) 
          .show(); 
       } 
      } 
     }); 

     // Link to Login Screen 
     btnLinkToLogin.setOnClickListener(new View.OnClickListener() { 

      public void onClick(View view) { 
       Intent i = new Intent(getApplicationContext(), 
         LoginActivity.class); 
       startActivity(i); 
       finish(); 
      } 
     }); 

    } 

    /** 
    * Function to store user in MySQL database will post params(tag, name, 
    * email, password) to register url 
    * */ 
    private void registerUser(final String imie, final String nazwisko, final String email, final String pin, final String telefon, 
           final String password) { 
     // Tag used to cancel the request 
     String tag_string_req = "req_register"; 

     pDialog.setMessage("Tworzę konto"); 
     showDialog(); 

     StringRequest strReq = new StringRequest(Method.POST, 
       AppConfig.URL_REGISTER, new Response.Listener<String>() { 

      @Override 
      public void onResponse(String response) { 
       Log.d(TAG, "Stan rejestracji: " + response.toString()); 
       hideDialog(); 

       try { 
        JSONObject jObj = new JSONObject(response); 
        boolean error = jObj.getBoolean("error"); 
        if (!error) { 
         // User successfully stored in MySQL 
         // Now store the user in sqlite 
         String uid = jObj.getString("uid"); 

         JSONObject user = jObj.getJSONObject("user"); 
         String imie = user.getString("imie"); 
         String nazwisko = user.getString("nazwisko"); 
         String email = user.getString("email"); 
         String pin = user.getString("pin"); 
         String telefon = user.getString("telefon"); 
         String created_at = user 
           .getString("created_at"); 

         // Inserting row in users table 
         db.addUser(imie, nazwisko, email, pin, telefon, uid, created_at); 

         Toast.makeText(getApplicationContext(), "Konto zostało utworzone! Zapraszamy do logowania!", Toast.LENGTH_LONG).show(); 

         // Launch login activity 
         Intent intent = new Intent(
           RegisterActivity.this, 
           LoginActivity.class); 
         startActivity(intent); 
         finish(); 
        } else { 

         // Error occurred in registration. Get the error 
         // message 
         String errorMsg = jObj.getString("error_msg"); 
         Toast.makeText(getApplicationContext(), 
           errorMsg, Toast.LENGTH_LONG).show(); 
        } 
       } catch (JSONException e) { 
        e.printStackTrace(); 
       } 

      } 
     }, new Response.ErrorListener() { 

      @Override 
      public void onErrorResponse(VolleyError error) { 
       Log.e(TAG, "Błąd rejestracji: " + error.getMessage()); 
       Toast.makeText(getApplicationContext(), 
         error.getMessage(), Toast.LENGTH_LONG).show(); 
       hideDialog(); 
      } 
     }) { 

      @Override 
      protected Map<String, String> getParams() { 
       // Posting params to register url 
       Map<String, String> params = new HashMap<String, String>(); 
       params.put("imie", imie); 
       params.put("nazwisko", nazwisko); 
       params.put("email", email); 
       params.put("password", password); 
       params.put("pin", pin); 
       params.put("telefon", telefon); 

       return params; 
      } 

     }; 

     // Adding request to request queue 
     AppController.getInstance().addToRequestQueue(strReq, tag_string_req); 
    } 

    private void showDialog() { 
     if (!pDialog.isShowing()) 
      pDialog.show(); 
    } 

    private void hideDialog() { 
     if (pDialog.isShowing()) 
      pDialog.dismiss(); 
    } 
} 

Answer 1

あなたの問題：私はあなたがはるかに言うことができない、それが構築されているかを確認することはできませんので、

JSONObject jObj = new JSONObject(response); 

はもちろん、あなたの応答は、無効なJSONです。

http://jsonlint.com/#