CODEWITHSUNDEEP
watchkit
MeloS
MeloS

Reputation: 7938

WatchKit: sync a timer between watch and iPhone app?

The problem I'm facing is that I started a count down timer(which is implemented with NSTimer) on iPhone app, and I want the user to see the timer on his Apple Watch, which has installed the counterpart watch app.

Now the only way I can communicate between watch and iPhone is by writing the start date and end date in NSUserDefault so that watch app can read it and adjust the timer according to its wall time.

But what if there is a time difference between the watch and iPhone, or since they are connected with bluetooth, the time will always be accurate in both ways?

Upvotes: 2

Views: 596

Answers (1)

Alex D
Alex D

Reputation: 301

I am doing something similar in my WatchKit app. I have a count down timer in my GlanceController that is using WKInterfaceTimer.

There is no time difference between the watch and the iPhone. I tested this on a real watch. They are exactly in sync.

Upvotes: 2

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