I am developing an app for elderly for my graduation project. There are 2 actors, elderly and the watcher who takes care of elderly.
'all application data stored in Firebase'
My app reminds elderly about their medication time and to check their blood pressure and glucose.
Also, there is a chat between elderly and watcher.
My question is how to push notification without using cloud functions?
I have watched a Flutter course and he used Firebase Cloud Messaging and Cloud Functions, but now Cloud Functions requires to upgrade project's billing plan, so it requires money and credit card, and I don't want to spend money for my graduation project especially that I don't have a huge knowledge about flutter.
I watched a YouTube video that someone explains push notification using Laravel with Flutter, but I afraid about that because I DON'T HAVE ANY IDEA ABOUT Laravel.
Also I see that there are many Flutter packages for push notification, but I don't know how to use it or if it uses a Cloud Functions or not. such as: awesome_notifications, flutter_local_notifications, pusher
I hope someone guide me to the right way.
in order to send custom notifications you can create your own server environment (backend) and from there perform all the logic to be able to send the notifications to the devices.
The only thing you need to be able to send a personalized notification from an external environment is to have the token device, in the case that you will send it to a specific person, you can also send notifications if the devices are subscribed to a topic.
This is the documentation to send notifications from a server to the device:
https://firebase.google.com/docs/cloud-messaging/http-server-ref
Related
I am working in banking sector and we have different portals for managing employee information, performance etc. I want to send push notification in mobile app from our asp.net web service when a new event (e.g. a Line Manager has to approve any pending request) occurs. How can I send notification to mobile app from our servers(where the web service has been deployed)? We don't have rights to place employee data on cloud servers or cloud databases.
Hopefully this is your request:
We don't have rights to place employee data on cloud servers or cloud
databases.
And not this:
Send Push Notification In Xamarin Forms Without Firebase
As they are entirely different. If you want to send data to Android devices you need to use Firebase for that just like you need to use Apple's servers for iOS devices. However you don't need to have any database or store data on them.
You can use PushSharp nuget if you want to minimize 3rd party server usage or some other similar solution.
Just for the record using Firebase (or other services like Azure) to send push notifications doesn't require you to place employee data on cloud servers either. Firebase and other solutions contain range of services that can be used independently and it seems that you consider them as all or nothing solution.
I want to create a realtime stock alert app where users can subscribe to specific stock instrument with target price. Once that target price hit, The subscribed user will be notified over the app.
A good example of such platform is Tradingview.com
For stock API's I will be receiving realtime stock quotes from My API vendor over.
As far my knowledge is concern, I'm looking at this app as Web socket OR MQTT pub/sub platform where users can subscribe to that specific instrument topic and get notified once stock price is hit.
But my knowledge is limited when it comes to thousands of users subscribing to thousands of alerts.
What technologies must be going at the backend for such kind of apps ? What must be the data flow ?
Bit late answer to this, I was working on something similar with all custom NodeJS server and instruments you want to subscribe on. It is very simple server and you can find it here https://github.com/markosole/yahoo-node-streamer
I am working on desktop App built on top of Electron which is used for subscribing to instruments, monitoring multiple instruments and creating visual and sound alerts for every instrument individually. I have not release Electron app source to the public yet.
Creating mobile app will be harder as it would require backround data and best bet would be using Flutter and Google Firestore to send alerts. Well this is very top level.. I will eventually make flutter app and share it on Github
Overlooking the fact that there are literally thousands of apps out there that do all of this already....
Your best bet might be to do one of two things:
1) Just send out the stock price and let the client app figure out the alert, or
2) Have a back-end system that just sends out the alert to the specific customer when their price point is reached.
Option 1 is something that MQTT could easily do. Option 2 could be done using MQTT, but its something of an overkill IMHO. MQTT is built for applications where one node is publishing data, and many nodes are subscribing to that data -- hence Option 1 is more in line with what MQTT was built for.
I'm using legacy binary APNs and GCM and now I want to upgrade to their newer versions of these services, as recommended on their websites. All I need are push notifications to both iOS and Android devices, though I'd like to add "scheduled notifications" or "bulk push notifications" feature as explained in Firebase Notifications docs.
I'm curious what are the reasons why would someone with these requirements choose Amazon SNS over FCM? Are there any downsides choosing FCM? Is this just a personal preference, meaning the both services will work great for these requirements? Thanks!
The mentioned scheduled notifications can only be done when sending the message via the Firebase Console. If you intend to have implement your own App Server and send the message using the FCM API, you would have to implement the scheduled push yourself. (See here)
For the bulk push notifications, this one can easily be implemented if you use FCM Topic Messaging.
To answer your post (which is pretty much opinion based), I haven't actually used Amazon SNS before, but going with FCM not only allows you to use the new features (compared to GCM), but it can also be a starting point for you to use the other services (Realtime Database, Analytics, Authentication, etc.).
I wonder to know which technique and tools I should use to have the ability to send real time notifications to users. Specifically if I build a messaging system.
I can see that modern social networks can send notifications about new messages almost immediately. Even when the user 'A' from one country writes a message to the user 'B' in another country you can see that the user 'A' writes a message and you immediately see it (even if those users live in different continents).
I tried to figure out how it is possible and find any information about this but without success.
The only thing I found out is the technique when we use a Redis or RabbitMQ server with several servers which acts like publishers and subscribers. Our API servers receive new messages then they push a new message in the queue then subscribers receives the messages and if they have an open WebSocket with the recipient they push this message in the WebSocket and a client receives the message.
But it really won't work if you have a distributed project and your clients are connected to the nearest servers in the nearest data center.
The question is: what technologies/techniques/anything we should use to be able to build notifications in a distributed project?
If you develop your distributed app/system using web technologies, you can consider building what is referred to as a Progressive Web App. With PWAs you can add push notifications in a relatively easy way. You could start with a PWA approach, and then decide later on if developing a native app as well (i.e. iOS or Android) would be necessary.
There are many resources to learn and guide you in developing progressive web apps. Check the references I mentioned above, and you can do this codelab as a starting point.
I'm interested in collecting realtime data periodically (say every 1 min.) through a mobile app on my server. Can I use services like PubNub or Pusher for it or are they only for communication in the other direction - like sending push notifications from a server?
If I can use, could you please explain how exactly the setup would work?
PubNub can provide bi-directional real-time datastreams on all devices, including mobile! Any phone (or server) can be a publisher, or a subscriber, or both.
You can choose your SDK of choice here http://www.pubnub.com/developers/ -- each client has docs for a simple hello world app.
If you need more assistance in getting setup with PubNub on mobile, just shoot us an email at support#pubnub.com and we will assist!