iOS Notification Options support

[jan-koz]

Please add support of iOS Notifications Options to make Airship Flutter package more reliable and highly customisable.

[rlepinski]

Working on a major SDK update where I will add this with foreground presentation options.

[tomalabaster]

We're facing a similar need here. In our AppDelegate didFinishLaunchingWithOptions method we set our foreground presentation options as appropriate:

NotificationCenter.default.addObserver(forName: Airship.airshipReadyNotification, object: nil, queue: nil) { notification in
    if #available(iOS 14, *) {
        Airship.push.defaultPresentationOptions = [.badge, .banner, .list, .sound]
        Airship.push.notificationOptions = [.badge, .sound]
    } else {
        Airship.push.defaultPresentationOptions = [.alert, .badge, .sound]
        Airship.push.notificationOptions = [.badge, .sound]
    }
}

but we're not auto initialising the Airship SDK and are instead calling takeOff slightly later on from Flutter.

When we call takeOff from Flutter, the platform method handler then calls AirshipAutopilot.attemptTakeOff() (line 184 of SwiftAirshipPlugin.swift) which in turn calls Airship.push.defaultPresentationOptions = [.alert] (line 30 of AirshipAutopilot.swift).

[rlepinski]

@tomalabaster You may need to delay setting the options til the next run loop by wrapping what you have in

DispatchQueue.main.async {

}

We have a major plugin rewrite coming that will add support for this and potentially be able to set it per notification all through flutter. This PR is the start of it - #161 we are just wrapping up a major native SDK release then we will focus on getting plugins up to date. I am hoping for a new flutter plugin by the end of this month.

[tomalabaster]

Thanks @rlepinski will give that a try and keep an eye out 👍

[rlepinski]

We added support in 7.0.0:
Setting options you want to register for:
Airship.push.iOS.setNotificationOptions([IOSNotificationOption.alert, IOSNotificationOption.badge, ...])

Foreground presentation options:
Airship.push.iOS.setForegroundPresentationOptions([IOSForegroundPresentationOption.list, IOSNotificationOption.banner, ...])