NSTimer具有匿名功能/块？ [英] NSTimer with anonymous function / block?

问题描述

我希望将来可以安排三个小事件而无需为每个事件编写一个函数。如何使用 NSTimer 执行此操作？我理解块有助于匿名功能，但它们可以在 NSTimer 中使用，如果是，如何使用？

I want to be able to schedule three small events in the future without having to write a function for each. How can I do this using NSTimer? I understand blocks facilitate anonymous functions but can they be used within NSTimer and if so, how?

[NSTimer scheduledTimerWithTimeInterval:gameInterval  
         target:self selector:@selector(/* I simply want to update a label here */) 
         userInfo:nil repeats:NO];

推荐答案

您实际上可以致电：

NSTimer.scheduledTimerWithTimeInterval(ti: NSTimeInterval,
                    target: AnyObject, 
                    selector: #Selector, 
                    userInfo: AnyObject?, 
                    repeats: Bool)

像这样使用：

NSTimer.scheduledTimerWithTimeInterval(1, 
                    target: NSBlockOperation(block: {...}), 
                    selector: #selector(NSOperation.main), 
                    userInfo: nil, 
                    repeats: true)

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