如何利用Playground实时预览界面

LiveView

可以通过导入PlaygroundSupport，进行实时预览界面，然后如果想关停Playground的实时刷新，只需要长按那个Run按键即可

//: Playground - noun: a place where people can play

import UIKit
import PlaygroundSupport


open class TestView: UIView {


    public override init(frame: CGRect) {
        super.init(frame: frame)
        self.backgroundColor = UIColor.white
    }

    required public init(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}


let live: TestView = TestView(frame: CGRect(x: 0, y: 0, width: 120, height: 120))


PlaygroundPage.current.liveView = live

赏

请问老板还招人么(/ω＼)

支付宝

微信