Auto login in android webapp

setcookie("user_id", $res['user_id']);
setcookie("username", $res['username']);
setcookie("mobile", $res['phone']);
setcookie("user_email", $email);
setcookie("login", "1");
$_SESSION['user_id']=$_COOKIE['user_id'];
$_SESSION['username']=$_COOKIE['username'];
$_SESSION['mobile']=$_COOKIE['mobile'];
$_SESSION['user_email']=$_COOKIE['user_email'];
$_SESSION['login']=1;


Android code:

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;


public class MainActivity extends AppCompatActivity {

    WebView webView;
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        webView = (WebView) findViewById(R.id.webview);
        webView.setWebViewClient(new MyWebViewClient());

        String url = "https://dharamart.blogspot.in";
        webView.getSettings().setJavaScriptEnabled(true);
        webView.loadUrl(url);
    }

    private class MyWebViewClient extends WebViewClient {
        @Override        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }
    }
}