static func animate(_ duration: TimeInterval,animations: (() -> Void)!,delay: TimeInterval = 0,options: UIViewAnimationOptions = [],withComplection completion: (() -> Void)! = {}) {
UIView.animate(
withDuration: duration,delay: delay,options: options,animations: {
animations()
},completion: { finished in
completion()
})
}
Using above class in my swift file and create function like below
SPAnimation.animate(durationScalingRootView,animations: {
rootViewController.view.transform = CGAffineTransform.identity
},delay: delayScalingRootView,options: UIViewAnimationOptions.curveEaSEOut,withComplection: {
finished in
//rootViewController.view.layer.mask = nil
})
得到此错误
Contextual closure type ‘() -> Void’ expects 0 arguments,but 1 was
used in closure body
解决方法
问题出在这里：
withComplection: {
finished in
//rootViewController.view.layer.mask = nil
}
如果查看方法声明,则完成处理程序的类型为(() – > Void)!.它不需要任何论据.上面的闭包需要一个参数 – 完成.结果,发生错误.
从闭包中删除完成的参数：
withComplection: {
//rootViewController.view.layer.mask = nil
}
或者您编辑animate方法以接受带有一个参数的闭包：
static func animate(_ duration: TimeInterval,withComplection completion: ((Bool) -> Void)? = nil) {
UIView.animate(
withDuration: duration,animations: {
animations()
},completion: { finished in
completion?(finished)
})
}
