Developing for Apple Watch

Adding User-Interface Elements

If you select your watch app target’s scheme in Xcode by clicking HelloWatch in the toolbar and selecting HelloWatch WatchKit App or selecting Product → Scheme → HelloWatch WatchKit App, and then you build and run (by pressing ⌘R), you’ll be greeted with a mostly blank Apple Watch screen with the time in the upper-right corner, a charging icon, and nothing else. Congratulations: your app is running! Now let’s make it do something. Let’s add a button and a label to this screen; the button will set the title of the label when you tap it. Head to the watch app’s storyboard file in Xcode. If you don’t see it, open the Project Navigator by pressing ⌘1 and expanding the HelloWatch WatchKit App group; it’s named Interface.storyboard ...