In-Build Update Checker For Your Application

So its time to add an in-build updater to your application , so as i did in previous tutorial this post will be also a continuation of the Android Studio Tutorials .

We are doing Android Studio projects as a continuation , so am just moving on to the main part . I will explain the basic things here as post and rest you can refer to my youtube video .

• Set up android studio in your windows and linux computers

Watch The Video And Follow Me :

• Start a new project or you can add it in an existing project .
• Choose Application name , domain name , package name ...
• And i am doing this project on Navigation Drawer Activity .
• After gradle building and all follow the bellow steps .   
• Download volley.jar file from the download options or click here .
  
• Now we have to add it to our project .
• Choose Project instead of Android .
  
• Open your project -> app -> libs .
  
• Now copy the downloaded file volley.jar and paste it on the libs file .
  
• Now after pasting left click and select the option Add as Library .
  
• Now the gradle will build and after that you need to go back to Android .
• Go to AndroidManifest.xml .
• Select the entire codes and replace it with this and be sure that you don't change your package name for me its com.appname.app .

	<?xml version="1.0" encoding="utf-8"?>
	<manifest xmlns:android="http://schemas.android.com/apk/res/android"
	package="com.appname.app" >
	<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
	<uses-permission android:name="android.permission.READ_LOGS" />
	<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
	<uses-permission android:name="android.permission.INTERNET" />
	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
	<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
	<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
	<application
	android:allowBackup="true"
	android:icon="@mipmap/ic_launcher"
	android:label="@string/app_name"
	android:roundIcon="@mipmap/ic_launcher_round"
	android:supportsRtl="true"
	android:theme="@style/AppTheme" >
	<activity
	android:name=".MainActivity"
	android:label="@string/app_name"
	android:theme="@style/AppTheme.NoActionBar" >
	<intent-filter>
	<action android:name="android.intent.action.MAIN" />
	<category android:name="android.intent.category.LAUNCHER" />
	</intent-filter>
	</activity>
	<activity android:name=".UpdateDialog"
	android:theme="@style/Animation.AppCompat.Dialog"/>
	<service
	android:name=".UpdateService"
	android:enabled="true"
	android:exported="true"/>
	</application>
	</manifest>

view raw AndroidManifest.xml hosted with ❤ by GitHub
• Now go to java part .
• Select your package name , left click and select New -> Java Class .
• Name the class UpdateService .
• Select the entire code except the package name and replace it with this .

	package com.appname.app;
	import android.app.Service;
	import android.content.Intent;
	import android.os.IBinder;
	import android.widget.Toast;
	import com.android.volley.Request;
	import com.android.volley.RequestQueue;
	import com.android.volley.Response;
	import com.android.volley.VolleyError;
	import com.android.volley.toolbox.StringRequest;
	import com.android.volley.toolbox.Volley;
	// Copyright owner vishnu
	// Official website : www.tipsandtricksonandroid.blogspot.com
	// Created on : 26-april-2017 //
	public class UpdateService extends Service {
	public UpdateService() {
	}
	@Override
	public int onStartCommand(Intent intent, int flags, int startId) {
	RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
	String url = "https://vishnutechmobs.github.io/update-link.html";
	StringRequest stringRequest = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
	@Override
	public void onResponse(String response) {
	if (response != null) {
	boolean resp = response.contains("1");
	if (!resp) {
	//New Update Available
	Intent intent1 = new Intent(UpdateService.this,UpdateDialog.class);
	intent1.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
	startActivity(intent1);
	} else {
	Toast.makeText(UpdateService.this, "Running Current Version", Toast.LENGTH_LONG).show();
	}
	}
	}
	}, new Response.ErrorListener() {
	@Override
	public void onErrorResponse(VolleyError volleyError) {
	volleyError.printStackTrace();
	}
	});
	queue.add(stringRequest);
	return Service.START_NOT_STICKY;
	}
	@Override
	public void onDestroy() {
	super.onDestroy();
	}
	@Override
	public IBinder onBind(Intent intent) {
	// TODO: Return the communication channel to the service.
	throw new UnsupportedOperationException("Not yet implemented");
	}
	}

view raw UpdateService.java hosted with ❤ by GitHub
• Here you need a github account and create a github page .
• For that you need to make a repository with the same name of that of your user name that you used in the github account .
• Now you must create a page with content just number "1" .
• Now copy the link of the page and replace my github page link https://vishnutechmobs.github.io/update-link.html with yours .
• When you change this number "1" to any link "2" update box appears .
•  And also the content inside  "  boolean resp = response.contains("1");  " this line which is 1 here must be same as that of the github page content .
• Then by changing the github page content "1" to "2" etc you can announce update .
• In short it works in a synchronous manner . If any one of the content is different then update box comes .
• An important note : don't forget to change the value "1" on the UpdateService to the change value on your updated application . If you have any doubt feel free to contact me . 
• Now create another java class . New -> Java Class .
• Name it UpdateDialog .
• Select the entire code except the package name and replace it with this .

	package com.appname.app;
	import android.app.Activity;
	import android.app.AlertDialog;
	import android.content.DialogInterface;
	import android.content.Intent;
	import android.net.Uri;
	import android.os.Bundle;
	// Copyright owner vishnu
	// Official website : www.tipsandtricksonandroid.blogspot.com
	// Created on : 26-april-2017 //
	public class UpdateDialog extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState){
	super.onCreate(savedInstanceState);
	final AlertDialog alertDialog = new AlertDialog.Builder(this).create();
	alertDialog.setTitle("Update Available");
	alertDialog.setMessage("A new version of this application is available ."+"\nWe have improved a lot from previous version");
	alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Download", new DialogInterface.OnClickListener() {
	@Override
	public void onClick(DialogInterface dialog, int which) {
	Intent intent = new Intent(Intent.ACTION_VIEW);
	intent.setData(Uri.parse("https://vishnutechmobs.github.io/update.html"));
	if(intent.resolveActivity(getPackageManager()) !=null){
	startActivity(intent);
	}
	}
	});
	alertDialog.show();
	}
	}

view raw UpdateDialog.java hosted with ❤ by GitHub
• Now go to MainActivity .
• Select the entire code except the package name and replace it with this .

	package com.appname.app;
	import android.content.Intent;
	import android.os.Bundle;
	import android.support.design.widget.FloatingActionButton;
	import android.support.design.widget.Snackbar;
	import android.view.View;
	import android.support.design.widget.NavigationView;
	import android.support.v4.view.GravityCompat;
	import android.support.v4.widget.DrawerLayout;
	import android.support.v7.app.ActionBarDrawerToggle;
	import android.support.v7.app.AppCompatActivity;
	import android.support.v7.widget.Toolbar;
	import android.view.Menu;
	import android.view.MenuItem;
	public class MainActivity extends AppCompatActivity
	implements NavigationView.OnNavigationItemSelectedListener {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
	setSupportActionBar(toolbar);
	//*-------------------Tech Mobs update activity------------------*//
	Intent intent = new Intent(MainActivity.this, UpdateService.class);
	startService(intent);
	//*-------------------Tech Mobs update activity end------------------*//
	FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
	fab.setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View view) {
	Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
	.setAction("Action", null).show();
	}
	});
	DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
	ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
	this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
	drawer.setDrawerListener(toggle);
	toggle.syncState();
	NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
	navigationView.setNavigationItemSelectedListener(this);
	}
	@Override
	public void onBackPressed() {
	DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
	if (drawer.isDrawerOpen(GravityCompat.START)) {
	drawer.closeDrawer(GravityCompat.START);
	} else {
	super.onBackPressed();
	}
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
	// Inflate the menu; this adds items to the action bar if it is present.
	getMenuInflater().inflate(R.menu.main, menu);
	return true;
	}
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	// Handle action bar item clicks here. The action bar will
	// automatically handle clicks on the Home/Up button, so long
	// as you specify a parent activity in AndroidManifest.xml.
	int id = item.getItemId();
	//noinspection SimplifiableIfStatement
	if (id == R.id.action_settings) {
	return true;
	}
	return super.onOptionsItemSelected(item);
	}
	@SuppressWarnings("StatementWithEmptyBody")
	@Override
	public boolean onNavigationItemSelected(MenuItem item) {
	// Handle navigation view item clicks here.
	int id = item.getItemId();
	if (id == R.id.nav_camera) {
	// Handle the camera action
	} else if (id == R.id.nav_gallery) {
	} else if (id == R.id.nav_slideshow) {
	} else if (id == R.id.nav_manage) {
	} else if (id == R.id.nav_share) {
	} else if (id == R.id.nav_send) {
	}
	DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
	drawer.closeDrawer(GravityCompat.START);
	return true;
	}
	}

view raw MainActivity.java hosted with ❤ by GitHub
• Thats it your application with In-Build Updater is ready to be build .
• Go to build option and choose option Build APK .

Have a preview of the update dialog box .

Part 2 - Setup A Splash Screen To Your Application ( Link To The Post - Click Here )

Part 1 - Build An Application For Your Website ( Link To The Post - Click Here )