标签：let float block oar tle style with var nil
在Swift中使用闭包来实现两个界面的传值
例如:有A类和B类.
B类
//声明闭包 typealias valueBlock = (Float)->() var returnPrice: valueBlock? //调用该闭包 self.returnPrice?(price)
A类
let sb = UIStoryboard(name:"Main", bundle: nil) let vc = sb.instantiateViewControllerWithIdentifier("keypadViewVC") as! keypadViewVC //B类的回调 vc.returnPrice = {price in self.gratuityBtn.setTitle(String(format: "%.2f", price), forState:UIControlState.Normal)} self.presentViewController(vc, animated: true, completion: nil)
标签：let float block oar tle style with var nil
原文地址：https://www.cnblogs.com/edensyd/p/9579932.html
