[英]How do you scroll in a UIScrollView in the Playground?
你真的可以在 Playground 的 UIScrollView 中滚动吗? 在下面的示例中,我希望能够向下滚动并查看标签。
import UIKit
import XCPlayground
let contentView = UIView(frame: CGRectMake(0, 0, 200, 200))
contentView.backgroundColor = UIColor.yellowColor()
let label = UILabel(frame: CGRectMake(0, 120, 20, 20))
label.text = "a"
contentView.addSubview(label)
let scrollView = UIScrollView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
scrollView.contentSize = CGSize(width: 200, height: 200)
scrollView.addSubview(contentView)
scrollView.flashScrollIndicators()
XCPlaygroundPage.currentPage.liveView = scrollView
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