类似OC的视图生命周期
oc的视图生命周期分7步
init
loadView
viewDidLoad
viewWillAppear
viewDidAppear
viewWillDisappear
viewDidDisappear
而AppleWatch中似乎将前面的3步合到一起,直接初始化
后面的4步的话,watchOS1的时候并没有,视图已经出现和视图将要消失,是watchOS2之后才加入的.
//界面的初始化
override func awakeWithContext(context: AnyObject?) {
super.awakeWithContext(context)
// Configure interface objects here.
}
//界面将要出现之前执行
override func willActivate() {
// This method is called when watch view controller is about to be visible to user
super.willActivate()
}
//界面已经出现(watchOS2.0之后添加的)
override func didAppear() {
super.didAppear()
}
//界面将要消失(watchOS2.0之后添加的)
override func willDisappear() {
super.willDisappear()
}
//界面小时之后执行
override func didDeactivate() {
// This method is called when watch view controller is no longer visible
super.didDeactivate()
}
github地址:https://github.com/WWLJ/MoodTracker/tree/master
