前言
應用內跳轉到 AppStore 的文章很多，一般都是用 SKStoreProductViewController 來實現的，不知道有沒有在意一個問題：打開很慢?。≡趺慈?？！
正文
一般網上的文章的代碼：
func openAppStore(url: String){ if let number = url.rangeOfString("[0-9]{9}", options: NSStringCompareOptions.RegularExpressionSearch) { let appId = url.substringWithRange(number) let productView = SKStoreProductViewController() productView.delegate = self productView.loadProductWithParameters([SKStoreProductParameterITunesItemIdentifier : appId], completionBlock: { [weak self](result: Bool, error: NSError?) -> Void in if result { self?.presentViewController(productView, animated: true, completion: nil) } else { self?.openAppUrl(url) } }) } else { openAppUrl(url) } } private func openAppUrl(url: String) { let nativeURL = url.stringByReplacingOccurrencesOfString("https:", withString: "itms-apps:") if UIApplication.sharedApplication().canOpenURL(NSURL(string:nativeURL)!) { UIApplication.sharedApplication().openURL(NSURL(string:url)!) } } func productViewControllerDidFinish(viewController: SKStoreProductViewController) { viewController.dismissViewControllerAnimated(true, completion: nil) }實現的效果很好，就是很慢，點擊按鈕調用 openAppStore 要很久才能顯示出界面，就算加一個轉圈效果也很差。原因是因為要去 linkmaker.itunes.apple.com 根據 identifier 查找鏈接，仔細看代碼我們會發現 presentViewController 是在查找到結果才被調用，其實我們可以不用讓界面現出來，雖然時間是一樣的，但是用戶體驗會很好，修改后代碼如下：
func openAppStore(url: String){ if let number = url.rangeOfString("[0-9]{9}", options: NSStringCompareOptions.RegularExpressionSearch) { let appId = url.substringWithRange(number) let productView = SKStoreProductViewController() productView.delegate = self productView.loadProductWithParameters([SKStoreProductParameterITunesItemIdentifier : appId], completionBlock: { [weak self](result: Bool, error: NSError?) -> Void in if !result { productView.dismissViewControllerAnimated(true, completion: nil) self?.openAppUrl(url) } }) self.presentViewController(productView, animated: true, completion: nil) } else { openAppUrl(url) } } private func openAppUrl(url: String) { let nativeURL = url.stringByReplacingOccurrencesOfString("https:", withString: "itms-apps:") if UIApplication.sharedApplication().canOpenURL(NSURL(string:nativeURL)!) { UIApplication.sharedApplication().openURL(NSURL(string:url)!) } } func productViewControllerDidFinish(viewController: SKStoreProductViewController) { viewController.dismissViewControllerAnimated(true, completion: nil) }代碼說明：
不等 loadProductWithParameters 返回直接 presentViewController ，解析失敗再嘗試用 openURL 的方式打開。
參考：
http://stackoverflow.com/questions/17871920/odd-behavior-with-skstoreproductviewcontroller
結束: 以上就是對ISO 應用內打開AppStorn顯示某個應用詳情，有需要的朋友可以參考下。
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