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How to create a application to make viop call how to#
How to create a application to make viop call full#

The notification should have accept and reject buttons. Only way it is dismissed if the ring is over or the user rejects the call. They should be non dismissable by swipe action.

How to create a application to make viop call full#

Upon receiving one, I will generate a notification with full screen intent as true. But there are certain properties the notification should have.So I would listen to a data message, in both foreground and background/terminated state. This plugin also has a full screen intent option, which when set to true can show your app when when phone is locked. My next plan was to use flutter_local_notifications plugin and generate a notification. I went with data messages because I wanted to be in control of the notification I generate. You can read about difference between notification messages and data messages in my stackoverflow answer here. I set up a FCM in flutter to receive data messages.

How to create a application to make viop call how to#

Now for how to get the behaviour of getting an actual phone call(getting a Caller ID screen, an accept/reject screen). So the voice call part is taken care of pretty easily.

If we implement just what the tutorial says, we will be joining a voice channel as soon as we launch the app, and anyone having the same app can speak into and listen to this voice call. You can find a tutorial on their official docs here. I am using the agora_rtc_engine plugin for making voice calls.

I wanted to build it without writing any platform specific code, or just the least amount of code.

We can use either the inbuilt calling app, or we can implement our own screen for incoming/outgoing calls and for call in progress.

During a call, when the user presses the back button, there should be a notification of a foreground service, which shows the info about ongoing call, and has options for disconnecting.

This notification should be a full screen notificaion so that we can see the call interface when the device is locked and not in use.

When accepted, this should launch into its own UI, where you see the call details like caller id, duration etc.

If the user is using the phone, a time sensitive notification should pop up.

The app should work over a keyguard(i.e- the lockscreen).

The app should work even when it is in background, or terminated even.

You will find many articles and videos about how easy peasy it is to integrate Twilio or Agora into a flutter app, but I could not find one resource which dived deep into making a true calling app in Flutter. I have been trying to make a voice calling app using Flutter. This article is not a tutorial about how to make a whatsapp or skype type calling app, rather it is an article about how I fell short of making such an app using flutter.

Disclaimer- That ! in the title is not a typo, read it as not.