Android: How to open apps when click on notification?

app.js

var win = Titanium.UI.createWindow({
	backgroundColor : 'blue'
});
var btn = Ti.UI.createButton({
	title : 'Add Notification'
});
 
btn.addEventListener('click', function(e) {
	var now = new Date().getTime()
	var delta = new Date( now + (4 * 1000) );
	var deltaMS = delta - now;
 
	var intent = Ti.Android.createServiceIntent({
		url : 'ExampleService.js'
	});
	intent.putExtra('interval', deltaMS);
	intent.putExtra('message' , 'This is that little extra');
	Ti.Android.startService(intent);
});
win.add(btn);
win.open();
 
// Test if the app was launched from our notification
var myIntent = Ti.Android.currentActivity.intent;
Ti.API.info('## Application was launched from a notification: '+myIntent.hasExtra('fromNotification'));

ExampleService.js

if(!Ti.App.Properties.hasProperty('notificationCount')) {
	Ti.App.Properties.setInt('notificationCount', 0);
} else {
	Ti.App.Properties.removeProperty('notificationCount');
 
	var activity = Ti.Android.currentActivity();
	var intent = Ti.Android.createIntent({
		action : Ti.Android.ACTION_MAIN,
		// you can use className or url to launch the app
		// className can be found by looking in the build folder
		// for example, mine looked like this
		// build/android/gen/com/appcelerator/test/Test7Activity.java
		// className : 'com.appcelerator.test.Test7Activity',
		
		// if you use url, you need to make some changes to your tiapp.xml
		url : 'app.js',
		flags : Ti.Android.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED | Ti.Android.FLAG_ACTIVITY_SINGLE_TOP
	});
	intent.addCategory(Titanium.Android.CATEGORY_LAUNCHER);
	// This will let us know if the app was launched from the notification
	intent.putExtra('fromNotification' , true);
 
	var pending = Ti.Android.createPendingIntent({
		activity : activity,
		intent : intent,
		type : Ti.Android.PENDING_INTENT_FOR_ACTIVITY,
		flags : Ti.Android.FLAG_ACTIVITY_NO_HISTORY
	});
 
	var notification = Ti.Android.createNotification({
		contentIntent : pending,
		contentTitle : 'Test',
		contentText : 'test',
		tickerText : 'This is a test',
		// "when" will only put the timestamp on the notification and nothing else.
		// Setting it does not show the notification in the future
		when : new Date().getTime(),
		icon : Ti.App.Android.R.drawable.appicon,
		flags : Titanium.Android.ACTION_DEFAULT | Titanium.Android.FLAG_AUTO_CANCEL | Titanium.Android.FLAG_SHOW_LIGHTS
	});
 
	Ti.Android.NotificationManager.notify(1, notification);
 
	var service = Ti.Android.currentService;
	var serviceIntent = service.getIntent();
 
	// this will display that custom extra that we added when we created the intent
	// intent.putExtra('message' , 'This is that little extra');
	var teststring = serviceIntent.getStringExtra('message');
	Ti.API.info('Extra!: ' + teststring);
 
	Ti.Android.stopService(serviceIntent);
}

tiapp.xml

<android xmlns:android="http://schemas.android.com/apk/res/android">
   <!-- the activities tag must be added if you want to use the url property to launch your app -->
   <activities>
       <activity url="app.js">
           <intent-filter>
               <action android:name="android.intent.action.VIEW"/>
               <category android:name="android.intent.category.DEFAULT"/>
               <category android:name="android.intent.category.BROWSABLE"/>
           </intent-filter>
       </activity>
   </activities>
   <!-- the services tag must be added so that our service will run -->
   <services>
       <service type="interval" url="ExampleService.js"/>
   </services>
</android>