WatchKit In-Depth Part 2 (208)
List Stack Sequence
Outline style - Shows currently selected picker with tinted outline Outline w/ caption - Adds label on top of picker (like complication picker)
Useful for showing context around where you’re at in the options
Can coordinate another image view to the current value of the picker in order to. Can be a WKInterfaceGroup or WKInterfaceImage.
let progressImages = UIImage.animatedImageWithImages([frames], duration: 0)
progressInterfaceGroup.setBackgroundImage(progressImages)
picker.setCoordinatedAnimations([progressInterfaceGroup])
You should wait until after you haven’t received an update “for some time” before doing anything expensive in response to a picker update
// Images included in app bundle
WKImage(imageNamed: “”)
// Image data loadied from network
WKImage(imageData: imageData)
// UIImage drawn in code, less efficient than the previous two
WKImage(image: contentImage)
presentMediaPlayerControllerWithURL(url, options: options) can pass in a remote URL and the system will load and show progress and then playback when ready
H.264 (208 x 260 or 320 x 180) 160kbps 30fps AAC stereo 32kbps
Place media video/image/audio into the watch extension bundle. Place downloaded media in the app group
WKinterfaceController presentAudioRecordingControllerWithOutputURL:preset:…
Can lock down keychain access to when device is unlocked, keychain items aren’t synced with iCloud remain local to the device