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        使用 Swift 对 ImageView 的 iOS 模糊效果

        iOS blur effect to ImageView with Swift(使用 Swift 对 ImageView 的 iOS 模糊效果)

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                  本文介绍了使用 Swift 对 ImageView 的 iOS 模糊效果的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  我正在尝试制作简单的 iOS 应用程序.我需要制作具有模糊效果的图像视图.我在 Stack Overflow 上找到了这段代码:

                  I am trying to make simple iOS app. I need to make image view with blur effect. I found this code on Stack Overflow:

                  class BlurImageView: UIImageView {
                  
                    override func awakeFromNib() {
                      super.awakeFromNib()
                    }
                  
                    required init(coder aDecoder: NSCoder!){
                        super.init(coder: aDecoder)   
                        var blur:UIBlurEffect = UIBlurEffect(style: UIBlurEffectStyle.Light)
                        var effectView:UIVisualEffectView = UIVisualEffectView (effect: blur)
                        effectView.frame = frame
                        addSubview(effectView)
                    }
                  }
                  

                  我需要将这个类连接到我的 image_view,但我不知道该怎么做.我尝试在 ViewControllerview_did_load 函数中执行此操作(image_view 是一个出口)

                  And I need to connect this class to my image_view, but I don't know how to do it. I try to do it in my view_did_load function in my ViewController (image_view is a outlet)

                  override func viewDidLoad() {
                      super.viewDidLoad()
                      image_view = BlurImageView()
                  }
                  

                  但是 NSCoder 是必需的……它是什么?也许我的方式是错误的方式?

                  but NSCoder required... What is it? maybe my way is a wrong way?

                  推荐答案

                  你需要让你的 image_view 成为 BlurImageView 的一个实例,所以在你的视图控制器和你的image_view 是一个 outlet,你需要让它成为 BlurImageView 的实例,而不是 UIImageView 的实例.

                  You need to make your image_view an instance of BlurImageView, so in your view controller and where your image_view is an outlet, you need to make it an instance of BlurImageView and not an instance of an UIImageView.

                  这篇关于使用 Swift 对 ImageView 的 iOS 模糊效果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跟版网!

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