sp

package com.giftypetech.realmwithvolley;

import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.StringRequest;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    public final String MY_SREFS_NAME = "my";
    //final String VERSION = "updateVersion";
    //String VERSION;
    SharedPreferences preferences;
    TextView textView;
    int localVersion;
    int remoteVersion;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView = findViewById(R.id.textView);
        versionLoadData();
    }

    /* This method for version api data fetch and save that version on SharedPreferences */
    private void versionLoadData() {
        String url = "";

        /* This api json data :
        {"database":{"version": "1.0.0"}} */
        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest
                (Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
                    @SuppressLint("WrongConstant")
                    @Override
                    public void onResponse(JSONObject response) {
                        try {
                            String versionString = response.getString("version").replace(".","");
                            remoteVersion = Integer.parseInt(versionString);
                            preferences = getSharedPreferences(MY_SREFS_NAME,Context.MODE_PRIVATE);
                            remoteVersion = preferences.getInt("remoteVersion",remoteVersion);
                            Log.d("response","Remote version is:- "+remoteVersion);
                            localVersion = preferences.getInt("localVersion", -1);
                            Log.d("response","First time local version is:- "+localVersion);

                            if (localVersion == -1) {
                                feildsLoadData();
                                legalsLoadData();
                                preferences = getSharedPreferences(MY_SREFS_NAME, MODE_PRIVATE);
                                SharedPreferences.Editor editor = preferences.edit();
                                editor.putInt("local",remoteVersion);
                                editor.apply();
                                localVersion = preferences.getInt("local", remoteVersion);
                                Log.d("response","Local version is:- "+localVersion);
                              }else {
                                if (remoteVersion > localVersion) {
                                    feildsLoadData();
                                    legalsLoadData();
                                }
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                }, new Response.ErrorListener() {

                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Log.d("response","is:- "+error.getMessage());
                    }
                });

        // Access the RequestQueue through your singleton class.
        MySingleton.getInstance(this).addToRequestQueue(jsonObjectRequest);
    }
    /* This method for fields data fetch and save data on database(Realm) */
    private void feildsLoadData() {
        String url = "";

        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest
                (Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
                    @Override
                    public void onResponse(JSONObject response) {
                        Log.d("response","Fields are:- "+response);
                    }
                }, new Response.ErrorListener() {

                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Log.d("response","Fields are:- "+error.getMessage());
                    }
                });

        // Access the RequestQueue through your singleton class.
        MySingleton.getInstance(this).addToRequestQueue(jsonObjectRequest);
    }

    /* This method for legals data fetch and save data on database(Realm) */
    private void legalsLoadData() {
        String url = "";
        /* This api json data :
        {"database":{"version": "1.0.0"}} */

        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest
                (Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
                    @Override
                    public void onResponse(JSONObject response) {
                        Log.d("response","Legals are:- "+response);
                    }
                }, new Response.ErrorListener() {

                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Log.d("response","is:- "+error.getMessage());
                    }
                });

        // Access the RequestQueue through your singleton class.
        MySingleton.getInstance(this).addToRequestQueue(jsonObjectRequest);
    }
}