swift - 在 UIImageView 中显示 Gif 时出错

Question

我有这个代码:

var url : NSURL = NSBundle.mainBundle().URLForResource("lambaavent2", withExtension: "gif")!
var testImage = UIImage.animatedImageWithAnimatedGIFData(NSData(contentsOfURL: url))
self.cityImageView.animationImages = testImage.images
self.cityImageView.animationDuration = testImage.duration
self.cityImageView.image = testImage.images.lastObject()
self.cityImageView.startAnimating()

当我启动项目时，出现错误:‘[AnyObject] 没有名为‘lastObject’的成员

我要做什么？

Answer 1

试试这个:

self.cityImageView.image = testImage!.images!.last as? UIImage