04 2017 档案

swift 三角函数简单用
摘要：class newVC:UIViewController{ let l = UILabel() var timer: Timer! var index = 0 override func viewDidLoad() { super.viewDidLoad() self.navigationItem. 阅读全文
posted @ 2017-04-28 13:33 尸者禾火雨相 阅读(520) 评论(0) 推荐(0)
swift 闭包传值
摘要：1.typealias myBlockArrCityAndId = (Array<Any>,Array<Any>,String) -> Void 2.var myBlock:myBlockArrCityAndId? 3.func baoCunBtn(){ var cityName:String = 阅读全文
posted @ 2017-04-14 10:46 尸者禾火雨相 阅读(142) 评论(0) 推荐(0)
swift 截取字符串
摘要：swift3.0 使用String.Index来做位置索引，要想实现截取功能首先得获取到String.Index; 获取中间部分参数用Range<Index>即可； let str:String = btn.currentTitle ?? "" let indes = str.index(str.s 阅读全文
posted @ 2017-04-12 16:18 尸者禾火雨相 阅读(1807) 评论(0) 推荐(0)