iOS的模糊化，会让界面很炫酷，用了不能停。本案例使用了FXBlurView，对图片进行模糊处理。

使用Pod文件：

target 'five' do  use_frameworks!  pod 'FXBlurView', '~> 1.6.4'end复制代码

然后执行pod install：

pod install --verbose --no-repo-update复制代码

如下代码可以直接编译运行：

import UIKitimport FXBlurView@UIApplicationMainclass AppDelegate: UIResponder, UIApplicationDelegate {    var window: UIWindow?    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {        self.window = UIWindow();        self.window?.frame=UIScreen.main.bounds;        self.window?.makeKeyAndVisible();        self.window?.rootViewController = Page()        return true    }}class Page: UIViewController {    var backgroundImageView:UIImageView?    var frostedView = FXBlurView()    override func viewDidLoad() {        super.viewDidLoad()        self.backgroundImageView = UIImageView()        self.backgroundImageView!.frame = self.view.frame        self.backgroundImageView!.contentMode = .scaleToFill        view.addSubview(self.backgroundImageView!)        frostedView.underlyingView = self.backgroundImageView!        frostedView.isDynamic = true        frostedView.tintColor = UIColor.black        frostedView.frame = self.view.frame        self.view.addSubview(frostedView)        self.backgroundImageView?.image = UIImage(named: "1.jpg")        self.frostedView.updateAsynchronously(true, completion: nil)    }}复制代码

这是我使用的图（文件名为1.jpg）记得拖放到你的工程内：