Maintaining session in android ( application stay authenticated on the server side)

Question

I am building a login application in android in which i am hitting a url(with username and password) upto that part it works fine but after that whenever I am hitting a url(

Answer 1

Here is an another implementation using Volley library ... a very useful hint from https://stackoverflow.com/a/36496607/3099185

    CustomRequest jsonObjReq = new CustomRequest(Request.Method.GET,
            url, null,  new Response.Listener() {

        @Override
        public void onResponse(JSONObject response) {
                Log.d(TAG, response.toString());
        }
    }, new Response.ErrorListener(){

        @Override
        public void onErrorResponse(VolleyError error) {
            VolleyLog.d(TAG, "Error: " + error.getMessage());
            Toast.makeText(getApplicationContext(),
                    error.getMessage(), Toast.LENGTH_SHORT).show();
            // hide the progress dialog
        }
    });

Custom request class

import android.util.Log;

import com.android.volley.AuthFailureError;
import com.android.volley.Response;
import com.android.volley.toolbox.JsonObjectRequest;

import org.json.JSONObject;

import java.util.HashMap;
import java.util.Map;

public class CustomRequest extends JsonObjectRequest {
    private String session_id = "";

    public CustomRequest(int method, String url, JSONObject jsonRequest,
                                   Response.Listener listener, Response.ErrorListener errorListener) {
        super(method, url, jsonRequest, listener, errorListener);
    }

    public CustomRequest(int method, String url, JSONObject jsonRequest, String session_id,
                                   Response.Listener listener, Response.ErrorListener errorListener) {
        super(method, url, jsonRequest, listener, errorListener);
        this.session_id = session_id;
    }


    @Override
    public Map getHeaders() throws AuthFailureError {
        Map headers = new HashMap();
        Log.d(TAG, " -> session_id = " + session_id);
        if(!(session_id.equals(""))) {
            headers.put("Cookie", this.session_id);
        }
        return headers;
    }

}

Simple way of implementing volley using singleton pattern http://arnab.ch/blog/2013/08/asynchronous-http-requests-in-android-using-volley/

Remember to initialize mRequestQueue in onCreate() to avoid unexpected null pointer exception

@Override
public void onCreate() {
    super.onCreate();

    // initialize the singleton
    sInstance = this;
        mRequestQueue = Volley.newRequestQueue(this);
}

Hope this help too ... ! :)