ios - 如何截取 pickerViewController 和 UIView 的屏幕截图？

Question

我有一个 TableView，它在 ViewController 上显示一个 PickerViewController。 ViewController 显示一些图像和一个按钮而不是触发一个 Action 。我希望此操作将屏幕截图作为 Apple 提供的屏幕截图。这是我的代码:

@IBAction func share(){

UIGraphicsBeginImageContext(view.frame.size)
    UIGraphicsBeginImageContext(thePicker.view.frame.size)
    view.layer.render(in: UIGraphicsGetCurrentContext()!)
    thePicker.view.layer.render(in: UIGraphicsGetCurrentContext()!)
    let image = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    let activity = UIActivityViewController(activityItems: [image], applicationActivities: nil)
    present(activity, animated: true, completion: nil)
}

This image is the result of using the screenshot provided by Apple (side + home button) This image is result of my code

Answer 1

你应该为 View 的截图写一个扩展。扩展的返回值是UIImage。你可以将UIImage打印到UIImageview。此外，如果您愿意，可以在此处调用按钮操作。

import UIKit


class VideoContentController: UIViewController{
      override func viewDidLoad() 
    {
        super.viewDidLoad()
        self.viewScreenShot()
    }
     func viewScreenShot()
    {
     let image = self.youtView.takeScreenShot()
     self.yourImageView.image = image
    }


}    

extension UIView {

        func takeScreenShot() -> UIImage {
            UIGraphicsBeginImageContextWithOptions(bounds.size, false, UIScreen.main.scale)

            drawHierarchy(in: self.bounds, afterScreenUpdates: true)

            // old style: layer.renderInContext(UIGraphicsGetCurrentContext())

            let image = UIGraphicsGetImageFromCurrentImageContext()
            UIGraphicsEndImageContext()
            return image!
        }
    }

好好享受吧:)