Hi Charles,
Your code looks good to me. One thing to look at is if the iPhone is
unlocked. By default, the watch will only show notifications if it’s on your
wrist and unlocked, and your iPhone is locked. If you’re using the phone, it
won’t show notifications on your wrist. If you ensure those conditions, is it
better?
Jeff Kelley
slauncha...@gmail.com | @SlaunchaMan <https://twitter.com/SlaunchaMan> |
jeffkelley.org <http://jeffkelley.org/>
> On Nov 10, 2016, at 8:50 PM, Charles Jenkins <cejw...@gmail.com> wrote:
>
> I’m trying to write an app that basically serves as a countdown timer. I’ve
> learned that the WKInterfaceTimer object doesn’t really do anything but
> draw the countdown on the screen. The documentation suggests pairing it
> with an NSTimer in order to be able to do something when the timer expires.
>
> I think the NSTimer approach is pretty worthless on the watch, because if
> the timer counts down for a long time, the app may be suspended or killed.
> And even if it only goes to background, when the timer expires, you’re not
> allowed to play haptics to alert the user. (These are the first things I
> tried, to no avail.)
>
> So instead of using a timer, I schedule a notification. The problem is, I
> can’t seem to make sure the notification’s alert is displayed when it
> arrives!
>
> Below is the top part of my ExtensionDelegate file. When the notification
> arrives, I get the message on my console saying we’re asking the system to
> present it, but nothing happens.
>
> What the heck else do I need to do to make sure notifications aren’t
> suppressed by the watch?
>
> import WatchKit
> import UserNotifications
>
> class ExtensionDelegate: NSObject, WKExtensionDelegate,
> UNUserNotificationCenterDelegate {
>
> func applicationDidFinishLaunching() {
> let nc = UNUserNotificationCenter.current()
> nc.delegate = self
> nc.requestAuthorization( options: [.alert, .sound] ) {
> ( accepted, error ) in
> if !accepted {
> print("Notification access denied.")
> }
> }
> }
>
> func userNotificationCenter(
> _ center: UNUserNotificationCenter,
> willPresent notification: UNNotification,
> withCompletionHandler completionHandler: @escaping (
> UNNotificationPresentationOptions ) -> Void
> ) {
> print( "Received alert--asking system to present it" )
> completionHandler( [ .alert, .sound ] )
> }
>
> <snip>
> }
>
> --
>
> Charles
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