objective-c - iCarousel in swift version 1.2 报错(candidate is not Objc but protocol requires it)

Question

我在 swift 1.2 中收到以下错误:'RootViewController' does not conform to protocol 'iCarouselDataSource'

在下面的类中，当我尝试实现第三方库 iCarousel 时:

class RootViewController: UIViewController,iCarouselDataSource,iCarouselDelegate
{...}

自动修复工具在此方法中放置一个符合协议(protocol)的@objc 标记:

@objc func carousel(carousel: iCarousel!, viewForItemAtIndex index: Int, var reusingView view: UIView?) -> UIView?
{}

但随后出现另一个错误:Method cannot be marked @objc because the type of the parameter 3 cannot be represented in Objective-C

感谢任何帮助或线索，谢谢!

Answer 1

从 reusingView 中删除 var，例如:

func carousel(carousel: iCarousel!, viewForItemAtIndex index: Int, reusingView view: UIView!) -> UIView! {
    var newView = view
    if newView == nil {
        //create new view
    }
    //update data
    return newView
}