nstimer

问题 I tried var timer = NSTimer() timer(timeInterval: 0.01, target: self, selector: update, userInfo: nil, repeats: false) But, I got an error saying \'(timeInterval: $T1, target: ViewController, selector: () -> (), userInfo: NilType, repeats: Bool) -> $T6\' is not identical to \'NSTimer\' 回答1: This will work: override func viewDidLoad() { super.viewDidLoad() // Swift block syntax (iOS 10+) let timer = Timer(timeInterval: 0.4, repeats: true) { _ in print("Done!") } // Swift >=3 selector syntax

问题 Locked . This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new answers or interactions. How do I use an NSTimer ? Can anyone give me step by step instructions? 回答1: Firstly I'd like to draw your attention to the Cocoa/CF documentation (which is always a great first port of call). The Apple docs have a section at the top of each reference article called "Companion Guides", which lists guides for the topic

问题 I\'m trying to create an NSTimer in Swift but I\'m having some trouble. NSTimer(timeInterval: 1, target: self, selector: test(), userInfo: nil, repeats: true) test() is a function in the same class. I get an error in the editor: Could not find an overload for \'init\' that accepts the supplied arguments When I change selector: test() to selector: nil the error disappears. I\'ve tried: selector: test() selector: test selector: Selector(test()) But nothing works and I can\'t find a solution in