I want to launch the messages app on the Apple Watch from my own WatchKit app. I've seen this post here, but it only tells me to forward the app launch to the iPhone.
In the delegate method of the iPhone app, I can now perform a URL action. What's the URL I have to use in order to launch the messages app on the watch?
This isn't possible in watchOS 1.
In watchOS 2, you'll be able to call openSystemURL on the WKExtension object and use the sms scheme. Documentation is available here.