在 Swift 中从 UIImageView 中检索 UIImage

Retrieving UIImage from UIImageView in Swift(在 Swift 中从 UIImageView 中检索 UIImage)

问题描述

我找到了解决方案，但它不在 Swift 中:Converting UIImageView to UIImage

I've found the solution but it is not in Swift: Converting UIImageView to UIImage

我什至通过使用 UnsafeMutablePointed 尝试在 Swift 中实现它而变得流氓并且没有运气.

I've even went rogue by trying to implement it in Swift by using UnsafeMutablePointed and had no luck.

然而，指针在 Swift 中通常是不受欢迎的，如果有一个简单的单行解决方案就更好了！

However, pointers are typically frowned upon in Swift and it would be nice if there was a simple one-liner solution to this!

示例代码:

let test1:UIImageView = UIImageView(image: UIImage(named: "test")) 
let test2 = test1.image // This fails with an error: Instance member ‘test1’ cannot be used on type ‘viewController’

推荐答案

我强烈建议您学习 Objective-C，因为这将极大地帮助您了解如何在 iOS (Cocoa-Touch) 中做事.

I highly advise you to learn about Objective-C, as that will help you greatly in finding out how to do things in iOS (Cocoa-Touch).

解决方案与Objective-C相同:

The solution is identical to Objective-C:

imageView.image

这篇关于在 Swift 中从 UIImageView 中检索 UIImage的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！