How to fix 'Value name of type java.lang.String cannot be converted to JSONObject'

Question

I'm am using Volley to send an HTTP request in Android and I'm getting this error:

java.lang.String cannot be converted to JSONObject.

On the server side, I use a PHP script to get values from the database.

My Android code:

String server_url = "http://192.168.225.40/server/greetings.php";
        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, server_url,null,
                new Response.Listener<JSONObject>() {
                    @Override
                    public void onResponse(JSONObject response) {

                        try {
                            name.setText(response.getString("name"));
                            email.setText(response.getString("email"));
                        }
                        catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                if(firebaseUser!=null){
                    if(!firebaseUser.getEmail().isEmpty())
                    {
                        email.setText(firebaseUser.getEmail());}

                }

                error.printStackTrace();

            }
        }
        );
        singletonclasshttp.getInstance(getActivity()).addtorequestque(jsonObjectRequest);

My PHP script:

?php
$username="root";
$password="";
$host = "localhost";
$dbname = "test";
$con = mysqli_connect($host,$username,$password,$dbname);
$sql = "select * from user where uid =1;";
$result = mysqli_query($con,$sql);
$data=array();

if(mysqli_num_rows($result)>0)
{

    $row = mysqli_fetch_assoc($result); 
    echo json_encode(array("name"=>$row["name"],"email"=>$row["email"],"type"=>$row["type"]));


}


?>

I need to parse the JSON and set the value for the text fields.

post your reponse class and gson response

Mohammad Sommakia
– Mohammad Sommakia

2019-06-13 18:18:56 +00:00
Commented Jun 13, 2019 at 18:18 — Mohammad Sommakia
– Mohammad Sommakia, Commented Jun 13, 2019 at 18:18

Mohammad Sommakia · Accepted Answer · 2019-06-13 18:25:33Z

1

use this site to generate a correct response class from json response

answered Jun 13, 2019 at 18:25

Mohammad Sommakia

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2 Comments

Alvin John Babu Over a year ago

Thanks for the response. the error was due to a typos in my code.

Mohammad Sommakia Over a year ago

glade to hear that. feel free to up vote and accept my answer thx.

Beyazid · Accepted Answer · 2019-06-13 18:34:08Z

1

You are getting JsonArray. You should use StringRequest. Then convert String to JsonArray and get JsonObject from the array.

answered Jun 13, 2019 at 18:34

Beyazid

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1 Comment

Alvin John Babu Over a year ago

Thanks for the response. the error was due to a typos in my code.

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