iOS检查更新

在AppDelegate的DidFinish方法中调用
  self.checkUpdatePlist()
func checkUpdatePlist() {
        HWUtil.shared.checkUpdates({ (appVersion, ipaVersion, ipaDesc, ipaDownloadPath) in
            let desc = "当前版本号:\(appVersion)\n  最新版本号:\(ipaVersion)\(ipaDesc)"
            self.showUpdateAlert("软件有新版本可更新",desc, ipaDownloadPath)
        }, nil, nil)
    }
func checkUpdates(_ haveUpdate: ((_ appVersion: String, _ ipaVersion: String, _ ipaDescription: String, _ downloadPath: String)->())?, _ noUpdate: (() -> ())?, _ fail: ((URL?, URLResponse?, Error?) -> ())?) {
        DispatchQueue.global().async {
            // https://114.242.84.115/ota/ios/hwnews.plist
            let url = URL.init(string: "https://114.242.84.115/ota/ios/hwnews.plist")
            let request = URLRequest.init(url: url!, cachePolicy: .reloadIgnoringCacheData, timeoutInterval: 10)
            
            let session = URLSession.init(configuration: URLSessionConfiguration.default, delegate: self, delegateQueue: nil)
            
            let downlaodTask = session.downloadTask(with: request, completionHandler: { (url, response, error) in
                
                if error == nil {
                    
                    if let plistData = NSDictionary.init(contentsOf: url!) {
                        let ipaDownloadPath = "itms-services://?action=download-manifest&url=https://114.242.84.115/ota/ios/hwnews.plist"
                        
                        debugPrint(plistData)
                        let items = plistData["items"] as! [Any]
                        let itemDict = items.first as! [String: Any]
                        let metadata = itemDict["metadata"] as! [String:String]
                        let ipaVersion = metadata["bundle-version"]
                        let description = metadata["description"]
                        
                        let currentVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String
                        if (self.compareVersions(v1: ipaVersion!, v2: currentVersion!)) {
                            // 更新
                            haveUpdate?(currentVersion!, ipaVersion!, "", ipaDownloadPath) // 暂时隐藏
//                            haveUpdate?(currentVersion!, ipaVersion!, "\n\(description!)", ipaDownloadPath)
                        } else {
                            noUpdate?()
                        }
                        
                    } else {
                        noUpdate?()
                    }
                } else {
                    fail?(url, response, error)
                }
            })
            
            downlaodTask.resume()
        }
    }
//提示更新
    func showUpdateAlert(_ title: String, _ verisondescription: String, _ urlString: String) {
        let alert = UIAlertController.init(title: title, message: verisondescription, preferredStyle: .alert)
        let cancelAction = UIAlertAction.init(title: "以后再说", style: .cancel, handler: { [weak self] (action) in
            // cancel operation
            
            if UserDefaults.standard.object(forKey: kUserLogined) as! Bool == true {
                // 已登录
                 debugPrint("")
                
                let rootVC =  self?.window?.rootViewController
                
                if (rootVC?.isKind(of: LoginViewController.self))! {
                    // present
                    let tabBarController = BaseTabBarController()
                    tabBarController.delegate = self
                    DispatchQueue.main.asyncAfter(deadline: DispatchTime.now()+0.1, execute: {
                        rootVC?.present(tabBarController, animated: true, completion: nil)
                    })
                }
                
            }
        })
        let removeAction = UIAlertAction.init(title: "下载", style: .default, handler: { [weak self] (action) in
            
            if UserDefaults.standard.object(forKey: kUserLogined) as! Bool == true {
                // 已登录
                debugPrint("")
                 let rootVC =  self?.window?.rootViewController
                let tabBarController = BaseTabBarController()
                tabBarController.delegate = self
                DispatchQueue.main.asyncAfter(deadline: DispatchTime.now()+0.1, execute: {
                    rootVC?.present(tabBarController, animated: true, completion: nil)
                })
            }
            
            // download operation
            print("打开 sarafi")
            let url = URL.init(string: urlString)
            
            if #available(iOS 10.0, *) {
                //高于 iOS 10.0
                UIApplication.shared.open(url!, options: [:], completionHandler: nil)
                
            } else {
                //低于 iOS 10.0
                UIApplication.shared.openURL(url!)
            }
        })
        
        alert.addAction(cancelAction)
        alert.addAction(removeAction)
        
        self.window?.rootViewController?.present(alert, animated: false, completion: nil)
    }