?

效果

?

源碼

// // UIView+ScreensShot.swift // Swift-Animations // // Created by YouXianMing on 16/9/5. // Copyright ? 2016年 YouXianMing. All rights reserved. // import UIKitextension UIView {/**Get the view's screen shot, this function may be called from any thread of your app.- returns: The screen shot's image.*/func screenShot() -> UIImage? {guard frame.size.height > 0 && frame.size.width > 0 else {return nil}UIGraphicsBeginImageContextWithOptions(frame.size, false, 0)layer.renderInContext(UIGraphicsGetCurrentContext()!)let image = UIGraphicsGetImageFromCurrentImageContext()UIGraphicsEndImageContext()return image} }

?

使用

// // ViewController.swift // ScreenShot // // Created by YouXianMing on 16/9/5. // Copyright ? 2016年 YouXianMing. All rights reserved. // import UIKitclass ViewController: UIViewController {override func viewDidLoad() {super.viewDidLoad()let redView = UIView(frame: CGRectMake(40, 40, 200, 200))redView.backgroundColor = UIColor.redColor().colorWithAlphaComponent(0.5)view.addSubview(redView)let imageView = UIImageView(image: redView.screenShot())view.addSubview(imageView)} }

?

轉載于:https://www.cnblogs.com/YouXianMing/p/5843924.html

總結

以上是生活随笔為你收集整理的Swift - UIView的无损截图的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。