LaunchActivity.java

package co.tenton.admin.autoshkolla.LaunchActivities;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import co.tenton.admin.autoshkolla.Models.ErrorResponse;
import co.tenton.admin.autoshkolla.Models.Parser;
import co.tenton.admin.autoshkolla.ServiceLayer.AllLayer;
import co.tenton.admin.autoshkolla.ServiceLayer.ResponseData;

import org.json.JSONObject;

public class LaunchActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(co.tenton.admin.autoshkolla.R.layout.activity_launch);

        //download the content from server

        //set a download bar and status
        downloadContent();
    }

    void downloadContent(){

        //message: "Ju lutem prisni"
        //show loader

        AllLayer.getAll(new ResponseData() {
            @Override
            public void onSuccess(JSONObject data) {

                Parser.saveToShared(getApplicationContext(), data.toString());
                Parser.createFromJSONObject(data);

                //message: "Mire se vini"
                //hide retry button
                // show Start Button to go to another activity
            }

            @Override
            public void onFailure(ErrorResponse error) {
                //message: Duhet te keni qasje ne internet
                // hide Start button
                // show retry button
            }

            @Override
            public void onNotModified() {
                //nuk besoj qe hin najhere :P
            }
        });
    }

    void retry(){ //this method should called when user click retry button
        //hide other fields
        downloadContent();
    }
    void start(){
        //close this activity and go to main activity
    }
}