我有VC,我想推动它并看到它下面的VC.
如果我以模态方式呈现我可以做到(Display clearColor UIViewController over UIViewController)
解决方法
扩展Wain的评论：
>您可以在UIImage中渲染父视图;
>然后将此图像设置为新视图的背景.
这是Swift中可能的实现：
override func viewDidLoad() {
super.viewDidLoad()
// render parent view in a UIImage
UIGraphicsBeginImageContext(self.view.bounds.size);
self.parent?.view.layer.render(in: UIGraphicsGetCurrentContext()!)
let viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
// add the image as background of the view
self.view.insertSubview(UIImageView(image: viewImage),at: 0)
