Android, random from external json

I am working on an android app. I want the app to select randomly a name from json. Here is the json :

{
"user": [
{
"id": "001",
"name": "Raj Amal",
"email": "raj.amalw@gmail.com"
},
{
"id": "002",
"name": "Raj",
"email": "amalw@gmail.com"
}
]
}

And here is my android code :

public class MainActivity extends Activity {
        TextView uid;
        TextView name1;
        TextView email1;
        Button Btngetdata;
        
        //URL to get JSON Array
        private static String url = "http://weblink/json/index.php";
        
        //JSON Node Names 
        private static final String TAG_USER = "user";
        private static final String TAG_ID = "id";
        private static final String TAG_NAME = "name";
        private static final String TAG_EMAIL = "email";
        
        JSONArray user = null;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
      
        setContentView(R.layout.activity_main);
        Btngetdata = (Button)findViewById(R.id.getdata);
        Btngetdata.setOnClickListener(new View.OnClickListener() {
                        
                        @Override
                        public void onClick(View view) {
                         new JSONParse().execute();

                                
                        }
                });
        
        
    }


    
    private class JSONParse extends AsyncTask<String, String, JSONObject> {
         private ProgressDialog pDialog;
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
             uid = (TextView)findViewById(R.id.uid);
                         name1 = (TextView)findViewById(R.id.name);
                         email1 = (TextView)findViewById(R.id.email);
            pDialog = new ProgressDialog(MainActivity.this);
            pDialog.setMessage("Getting Data ...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);
            pDialog.show();
            
        }
        
        @Override
        protected JSONObject doInBackground(String... args) {
                JSONParser jParser = new JSONParser();

                // Getting JSON from URL
                JSONObject json = jParser.getJSONFromUrl(url);
                return json;
        }
         @Override
         protected void onPostExecute(JSONObject json) {
                 pDialog.dismiss();
                 try {
                                // Getting JSON Array
                                user = json.getJSONArray(TAG_USER);
                                JSONObject c = user.getJSONObject(0);
                                
                                // Storing  JSON item in a Variable
                                String id = c.getString(TAG_ID);
                                String name = c.getString(TAG_NAME);
                                String email = c.getString(TAG_EMAIL);
                                
                                
                                //Set JSON Data in TextView
                                uid.setText(id);
                                name1.setText(name);
                                email1.setText(email);

                        
                } catch (JSONException e) {
                        e.printStackTrace();
                }

                 
         }
    }`

I would that when I presse the button a random name shows and loops.

Please help Thank you