swift MBProgressHUD加载gif或者apng的动图

效果图

给MBProgressHUD添加一个分类（extension）

extension MBProgressHUD { /// MBProgressHUD 显示加载gif hud方法
///
/// - parameter view: hud where to show
/// - parameter userInterface: hud userInerface enable default = true
/// - parameter animated: hud show with animation default = true
///
/// - returns: nil
class func showGifAdded(to view:UIView!,userInterface:Bool = true,animated:Bool = true){
//如果是gif可以使用sdwebImage的方法加载本地gif
let image = UIImage.sd_animatedGIFNamed("loading")
//如果是apng图片的话，使用YYKit框架中的YYImage加载apng动图
// let image = YYImage(named: "loading")
// let giftImgView = YYAnimatedImageView(frame: CGRect(x: 0, y: 0, width: 80, height: 80))
// giftImgView.image = image
let giftImgView = UIImageView(image: image)
let hud = MBProgressHUD.showAdded(to: view, animated: animated)
hud?.color = .clear
hud?.mode = .customView
//userInteraction用来控制hud加载过程中用户是否可以做拖动点击操作，默认true
hud?.isUserInteractionEnabled = userInterface
hud?.customView = giftImgView
}
}


使用方法：

MBProgressHUD.showGifAdded(to: view, animated: true) //默认userInterface=true
MBProgressHUD.showGifAdded(to: view, userInterface: false, animated: true) //可以设置userInterface=false