How to handle push notification when application is killed - react-native

Pardon me if this question has been asked before, I just couldn't find the answer.
I have an react native application, it has calling feature using .Net Core SignalR (For signalling) and webRTC for actual calling. There are three scenarios out of which my application works fine in two scenarios:
Application is in foreground: For this I simply inform other client that X is calling you (using signals from SignalR).
Application is in background: For this I send push notification to the client which is read by the application (notification listener) which in turns opens up the call accept/decline window.
I am struggling with scenario 3:
Application has been killed (from recent apps etc.) and is now not in background in this scenario I only receive the push notification but call windows doesn't open but if I open up that notification I can see the calling window as intended. I need a solution which will open up the calling window automatically just like it does in scenario 1 & 2. How can I listen to push notifications when the application is dead? So that I can show the call window?
I am looking for a solution that would preferably work both on Android and iOS and I am using FCM Push notifications. I am also open to solutions other than push notifications as long as they work correctly.

For supporting to android and iOS you can use
import messaging from "#react-native-firebase/messaging";
messaging().setBackgroundMessageHandler(async (remoteMessage) => {
// handle your notification message here
}

Related

react-native-firebase - Open app from Headless JS Service / Open app from received notification in background mode

I read
How to handle notification when app in background in Firebase
Open app on firebase notification received (FCM)
But these aren't the solution for react-native-firebase.
I'm using react-native-firebase to handle notifications. In foreground, everything works well. I stuck with background state.
I'm working on a chat project and making 1-to-1 call feature. I push data-notification to clients when they have a call. In iOS, I used CallKit when client received notification, and it worked fine. But in Android I have a problem:
I can show ConnectionService UI for a call, but can't connect to my web socket server because it runs on Headless JS service. So I tried to auto open the app. I want to show a call screen as Skype, and accept/deny the call. (Skype can launch the app when I have a call)
Summary, successful steps:
Receive call notification in foreground state and show calling screen.
Receive call notification in background/closed state and show calling screen on iOS.
Receive call notification in background/closed state on Android.
Stuck here:
Show calling screen in background/closed on Android ???
TL;DR - How to launch/run/open Android app from Headless JS Service?
I dig into react-native-firebase, it catches the notification on onMessageReceived and send notification message to Headless JS Service.
// If the app is in the background we send it to the Headless JS Service
Intent headlessIntent = new Intent(
this.getApplicationContext(),
RNFirebaseBackgroundMessagingService.class
);
headlessIntent.putExtra("message", message);
this
.getApplicationContext()
.startService(headlessIntent);
HeadlessJsTaskService.acquireWakeLockNow(this.getApplicationContext());
Any help would be appreciated
This library is helpful to open app from background state.
React Native Launch Application
If your app is quit from background state
you've to register registerHeadlessTask in index.js like this
AppRegistry.registerHeadlessTask(
'ReactNativeFirebaseMessagingHeadlessTask',
() => notificationActionHandler,
);
and in notificationActionHandler function call libraries function to open app
If your app is in background you can subscribe this
messaging().setBackgroundMessageHandler(remoteMessage => {
console.log('setBackgroundMessageHandler', remoteMessage.data);
})

How to Send Push Notification to Xamarin Android app?

I need to implement push notification to our Android App using Xamarin. Here is the process. We have web version which used by the Manager. The Manager creates and assign job to the driver. The App version is used by the Driver where it shows the list of jobs and processes of job until its complete. So, when the Manager assigned the Job to the Driver in the Web version, it will then notified to the Driver in the App version that "new job is assigned". Basically, both the web and app uses same database then we created an api(REST API in MVC C#) to connect and get data from the db to be used in the mobile app.
Can someone recommend to me which Push notification plugin(a plugin or nuget) should I use to do this? Currently, I have set up Push Notifications through App center & Firebase but not sure how this work.
Thank you.
I need to implement push notification to our Android App using Xamarin.
I would suggest you use Firebase for mobile push notifications for Android as it is a product by Google, and was made for mobile applications. For push notifications, you will be using Firebase Cloud Messaging also known as FCM. See to it that you are well versed on how it works before you start coding anything read the documents it answers most of your questions there itself.
The Manager creates and assign job to the driver. The App version is used by the Driver where it shows the list of jobs and processes of a job until its complete. So, when the Manager assigned the Job to the Driver in the Web version, it will then notified to the Driver in the App version that "new job is assigned". Basically, both the web and app use the same database then we created an API(REST API in MVC C#) to connect and get data from the DB to be used in the mobile app.
For this, you will have to check on how to work with Firebase using Rest-API. Once you configure the Rest-API and then apply your business logic to it things will be quite easier than you might have imagined.
Can someone recommend to me which Push notification plugin(a plugin or NuGet) should I use to do this?
My recommendation is quite simple, Do not use any sort of a firebase push notifications plugin!. I have had a very bad past with plugins and ever since then I never recommend fellow developers to use plugins until it is a well-maintained one. I would rather ask you to simply configure Firebase on the basis of the guides that are available online. Like the following Xamarin.Android guide for FCM. It is detailed contains everything that you are looking for and what else I would suggest is you check firebase related answers on SO and you will find that almost everything that is not available in docs is covered around here and in detail. Like the following:
How to handle Firebase Notification i.e. Notification Messages and Data Messages
Push Notification in android with firebase get token
How to send device to device messages using Firebase Cloud Messaging?
Receive push notifications on one android app from two Firebase projects

How to configure Android Push Notifications (GCM) in Appcelerator Titanium Dashboard?

I've tried to following the instructions
Configuring push services for Android devices
However, the steps mention 'Click Push Notifications on the left-side navigation' but they don't exist...
Once you've created a Google API project with GCM enabled, you need to update your application's settings page in Dashboard with the API key and sender ID you generated.
To configure Arrow for push notifications using Dashboard:
Open Dashboard and select your application from the Apps drop-down menu.
Click Push Notifications on the left-side navigation <-- MISSING.
Select the Android Push tab.
Enter the server key in the GCM API Key field and the GCM sender ID in the GCM Sender ID field.
Here's a screenshot to show what's listed...
If I look under Arrow (where I suspect it might be expecting to be listed) that's empty (I'm not using Arrow - I thought it was an alternative UI using declarative XML)...
I've checked the subscription that I'm on (Indie) and it shows that I should have the ability to send up to 1 million push notifications for free..
Does anyone know how I can associate the Appcelerator Titanium project to the GCM server key??
Also, when I looked in Googles developer console, my application (which is live on their app store) wasn't listed, so I've created a new application called 'Gcm'. The Appcelerator Titanium seemed to confirm that I needed to 'create' the application, I was just too worried to call it the same name as the live application. How does the 'Google Developer Console' Application relate to the 'Google Play' application?! - if at all?
UPDATE
I've just discovered in TiApp.xml that I can enable some 'Cloud' settings and this has unlocked the 'Push' menu - so I think all is good now, could someone confirm that this is the right thing to do and answer my related question about Google play applications v google developer console applications?
Update 2
I started to get this error
[ERROR] : GooglePlayServicesUtil: The Google Play services resources
were not found. Check your project configuration to ensure that the
resources are included.
[INFO] : CloudPush.retrieveDeviceToken error: INVALID_SENDER
I'm simply calling this to try and register for Android push notifications ...
CloudPush.retrieveDeviceToken({
success : function(e) {
console.info("CloudPush.retrieveDeviceToken success");
},
error : function(e) {
console.info("CloudPush.retrieveDeviceToken error:"+e.error);
}
});
I have tried with and without the ti.cloud module (I think it got added when I clicked the 'Enable Services' button which meant that I could see the 'Push Notifications' tab, but it seems to still be listed whether the ti.cloud module is elected or not)..
Before..
Q - How to stop the Google Play error and retrieve the device token (oddly I was getting the token before enable services.
Q - Is ti.cloud used to receive the push notification, or is ti.cloudpush sufficient for this?
Thanks for the detailed question :) Let me go into some of the things you mention and clarify what I can.
If I look under Arrow (where I suspect it might be expecting to be listed) that's empty
As you later found out you have to enable platform services for your app which will create an ArrowDB app with the same name as your app. This app will have the Push Notifications in the sidebar to configure. I've updated the guide's wordings to make clear we mean the ArrowDB app, not the Titanium app.
(I'm not using Arrow - I thought it was an alternative UI using declarative XML)...
Don't confuse Arrow with Alloy - which is the MVC framework for Titanium which indeed uses XML.
How does the 'Google Developer Console' Application relate to the 'Google Play' application?! - if at all?
It doesn't. You can even have multiple apps share the same GCM sender.
[ERROR] : GooglePlayServicesUtil: The Google Play services resources were not found.
What did you use to test? A Genymotion emulator without Google Apps installed perhaps? You'll need that.
Is ti.cloud used to receive the push notification, or is ti.cloudpush sufficient for this?
ti.cloud is the module to communicate with ArrowDB, subscribe to channels etcetera. On Android you need ti.cloudpush (or as #Shawn mentioned another module) to retrieve the device token where on iOS you can use a Ti. API for that. Follow this guide for all steps.
You can ignore the Google Play Service error, but it seems your GCM Sender ID and/or API Key is wrong. Read through the tutorial and make sure you put down the right ones.
If you are using Appcelerator Cloud Service to send push notifications, you need ti.cloud to register the devices.
To get the device token and to receive push notifications, you use ti.cloudpush. There are other modules that you can use instead of ti.cloudpush.

Launching and terminating a helper app with a sandbox main app

I have a main app with a bundled helper app within. The helper app is a necessity for the main app to function correctly. As of right now, I have the main app launch the helper app on launch, and have the main app send a notification telling the helper app to terminated through the NSDistributedNotificationCenter on the termination of the main app.
This way works most of the time. However, if the main app is force closed, the helper app remains running (no notification is sent. I am using the AppDelegate's applicationWillTerminate method to send the notification).
Is there a way to make the running of the helper app more reliable? Also, is there a better way to make the communication between the two apps (ie not NSDistributedNotificationCenter; is there away to communicate through app bundles?)?
Thanks!
You could always use a common approach of 'pinging' each other to indicate the app is still alive (also via notifications) like once a minute.
No notification received after some timeout being the helper app's trigger to shut itself down.
Not super-elegant but pragmatic and proven.
Or check the list of processes for the other app still being alive, though the latter sounds more brittle to me.

WL push notification callback not being invoked in iOS when app is in background

We have push notifications working successfully. Backend event source is a Worklight adapter written in JS using the 'WL.Server.createDefaultNotification' and 'WL.Server.notifyAllDevices' API calls to send unicast notifications. In the front-end, the app is registered for push notification call back using 'WL.Client.Push.registerEventSourceCallback' JS API.
These particular scenarios are not working:
App is open in the background after login. Notification message is received, but user does not tap notification banner message - and instead just opens app by touching app icon. Notification callback method is not called - and subsequently payload from the backend is not available for the method.
App is open in the background after login. Notification message is received which only has iOS badge change and payload but no notification message for the banner or lock screen. In which case user has nothing to tap on. When user opens the app again - notification callback is not called.
Knowledgecenter documentation seems to indicate that the callback method should be getting invoked even if the app is running in the background. This is with Worklight 6.2.0.1.
Push is indeed supposed to work as you've describe. This is a bug.
This is no manual workaround for this.
If you are an IBM customer or Business Partner you will need to open a PMR (support ticket).