首先我用的是Alamofire请求的数据

1.获取appstore版本号

func checkVersionTapGestrue(sender: UITapGestureRecognizer){        Alamofire.request("https://itunes.apple.com/lookup?bundleId=你的bundleId", method: .get, parameters: [:])            .responseJSON { (response) in                                if let value = response.result.value {                    let json = JSON(value)                                self.compareVersion(appStoreVersion: json["results"][0]["version"].stringValue)                }        }    }

2.比较两个版本

//比较版本    func compareVersion(appStoreVersion: String) {            let version:String = (Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String)!        if appStoreVersion == version {            BaseController().showTextOnly(view: self.view, text: "当前已经是最新版本", detail: "")        }else{            let urlString = "itms-apps://itunes.apple.com/app/id23223232323"（id加你的appId）            if let url = URL(string: urlString) {                //根据iOS系统版本，分别处理                if #available(iOS 10, *) {                    UIApplication.shared.open(url, options: [:],                                              completionHandler: {                                                (success) in                    })                } else {                    UIApplication.shared.openURL(url)                }            }        }    }

参考：http://www.hangge.com/blog/cache/detail_1265.html

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