CODEWITHSUNDEEP
phpandroidarraysjsonandroid-volley
Rzj Hayabusa
Rzj Hayabusa

Reputation: 657

How to get and passed JSON Array using Android volley?

I'm having a problem in Android Studio on how to intent JSON Array using Android Volley String Request.

My goal is whenever user enter correct login and password. it will bring along other value of that particular user which is in my case is realname and dept.

I have these JSON Array output

{
    "login":"ID001",
    "realname":"Tom",
    "dept":"ICTD"
}

Produce by this PHP code below

Login.php

<?php
    $conn = mysqli_connect("","","","");

    if(
        isset($_POST['login']) &&
        isset($_POST['password'])
    ){
        $login = $_POST['login'];
        $password = $_POST['password'];
        $sql = "SELECT * FROM users WHERE login = '$login' AND pw = '$password' ";
        $result = mysqli_query($conn, $sql);
        if($result && mysqli_num_rows($result) > 0){
            while($row = mysqli_fetch_array($result)){
                $logindb     = $row['login'];
                $realnamedb  = $row['realname'];
                $deptdb      = $row['dept'];
                echo "success_login";
                $response = array('login' => $logindb, 'real_name' => $real_namedb, 'dept' => $deptdb);
                echo json_encode($response);
            }
        mysqli_free_result($result);
        } else {
            echo "login_failed";
        }
    }
?>
<!DOCTYPE html>
<html>
<head>
    <title>Login</title>
</head>
<body>
    <form action="login.php" method="post">
        <table>
            <tr>
                <td>Login :</td>
                <td><input type="text" name="login"></td>
            </tr>
            <tr>
                <td>Password :</td>
                <td><input type="text" name="password"></td>
            </tr>
            <tr>
                <td><input type="submit" name="Submit" value="Login"></td>
            </tr>
        </table>
    </form>
</body>
</html>

In Android Studio, my current problem is the JSON Array can't be display inside try{} .

LoginActivity.java

  public class LoginActivity extends AppCompatActivity{

    EditText etLogin, etPassword;
    Button bLogin;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);


        etLogin         = (EditText)findViewById(R.id.etLogin);
        etPassword      = (EditText)findViewById(R.id.etPassword);
        bLogin          = (Button)findViewById(R.id.bLogin);
        bLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url = "http://localhost/login.php";
                StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        if(response.equals("success_login")){
                            try {
                                JSONObject jsonObject   = new JSONObject(response);
                                JSONArray booking       = jsonObject.getJSONArray("login");

                                if(booking.length() > 0){
                                    for (int countItem = 0; countItem<booking.length(); countItem++){

                                        JSONObject bookingObject    = booking.getJSONObject(countItem);
                                        final String login                 = bookingObject.isNull("login");
                                        final String realname              = bookingObject.isNull("realname");
                                        final String dept                  = bookingObject.isNull("dept");


                                        Intent intent = new Intent(LoginActivity.this, NextActivity.class);
                                        intent.putExtra("login", login);
                                        intent.putExtra("realname", realname);
                                        intent.putExtra("dept", dept);
                                        LoginActivity.this.startActivity(intent);
                                    }
                                }
                            } catch (JSONException e) {
                                e.printStackTrace();
                            }
                        } else{
                            Toast.makeText(getApplicationContext(), "error", Toast.LENGTH_SHORT).show();
                        }
                    }
                }, new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(getApplicationContext(), "Volley error", Toast.LENGTH_SHORT).show();
                    }
                }){
                    @Override
                    protected Map<String, String> getParams() throws AuthFailureError {
                        Map<String, String> params = new HashMap<>();
                        params.put("login", etLogin.getText().toString());
                        params.put("password", etPassword.getText().toString());
                        return params;
                    }
                };
                MySingleton.getInstance(getApplicationContext()).addToRequestQueue(stringRequest);
            }
        });
    }

}

Appreciate if someone can help me. Thanks.

Upvotes: 0

Views: 846

Answers (1)

Vishal Yadav
Vishal Yadav

Reputation: 1024

  1. Get JSON object like this
  String url = "http://localhost/login.php";
            StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                         Log.e("response>>>>","",response);
                    if(response.equals("success_login")){
                        try {
                            JSONObject jsonObject   = new JSONObject(response);



                                    final String login                 = jsonObject.getString("login");
                                    final String realname              = jsonObject.getString("realname");
                                    final String dept                  = jsonObject.getString("dept");


                                    Intent intent = new Intent(LoginActivity.this, NextActivity.class);
                                    intent.putExtra("login", login);
                                    intent.putExtra("realname", realname);
                                    intent.putExtra("dept", dept);
                                    LoginActivity.this.startActivity(intent);
                                }
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    } else{
                        Toast.makeText(getApplicationContext(), "error", Toast.LENGTH_SHORT).show();
                    }
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Toast.makeText(getApplicationContext(), "Volley error", Toast.LENGTH_SHORT).show();
                }
            }){
                @Override
                protected Map<String, String> getParams() throws AuthFailureError {
                    Map<String, String> params = new HashMap<>();
                    params.put("login", etLogin.getText().toString());
                    params.put("password", etPassword.getText().toString());
                    return params;
                }
            };
            MySingleton.getInstance(getApplicationContext()).addToRequestQueue(stringRequest);
        }

Upvotes: 1

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