public class AddInfo extends AppCompatActivity {

EditText Name , Email ,Mobile;
String name , email,mobile;
TextView textView ;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_info);

    Name = (EditText)findViewById(R.id.editText);

    Email = (EditText)findViewById(R.id.editText2);
    Mobile = (EditText)findViewById(R.id.editText3);
    textView = (TextView)findViewById(R.id.textView);


}

public void saveInfo(View view){

    name = Name.getText().toString();
    email = Email.getText().toString();
    mobile = Mobile.getText().toString();
    BackgroundTask backgroundTask = new BackgroundTask();
    backgroundTask.execute(name,email,mobile);
    finish();

}

class BackgroundTask extends AsyncTask<String,Void,String>{

    String add_info_url;
    @Override
    protected void onPreExecute() {

   add_info_url = "url";

    }

    @Override
    protected String doInBackground(String... args) {
        String name,email,mobile;
        name= args[0];
        email = args[1];
        mobile  = args[2];

   try{
       URL url = new URL(add_info_url);
       HttpURLConnection httpURLConnection =(HttpURLConnection) url.openConnection();
        httpURLConnection.setRequestMethod("POST");
       httpURLConnection.setDoOutput(true);
       OutputStream outputStream = httpURLConnection.getOutputStream();
       BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream,"UTF-8"));
       String data_string = URLEncoder.encode("name","UTF-8")+"="+URLEncoder.encode(name,"UTF-8")+"&"+
               URLEncoder.encode("email","UTF-8")+"="+URLEncoder.encode(email,"UTF-8")+"&"+
               URLEncoder.encode("mobile","UTF-8")+"="+URLEncoder.encode(mobile,"UTF-8");
       bufferedWriter.write(data_string);
       bufferedWriter.flush();
       bufferedWriter.close();
       outputStream.close();

       InputStream inputStream= httpURLConnection.getInputStream();
       inputStream.close();
       httpURLConnection.disconnect();
       return "One row of data inserted";






        }
       catch (MalformedURLException e) {
       e.printStackTrace();
   } catch (IOException e) {

   }

        return null;
    }

    @Override
    protected void onProgressUpdate(Void... values) {

        textView.setText("Loading.....");

    }

    @Override
    protected void onPostExecute(String result) {

        Toast.makeText(getApplicationContext(),result,Toast.LENGTH_LONG).show();



    }

}