【Swift】 应用内显示 AppStore 某个应用的详情
一般网上的文章的代码：
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) }
实现的效果很好，就是很慢，点击按钮调用 openAppStore 要很久才能显示出界面，就算加一个转圈效果也很差。原因是因为要去 linkmaker.itunes.apple.com 根据 identifier 查找链接，仔细看代码我们会发现 presentViewController 是在查找到结果才被调用，其实我们可以不用让界面现出来，虽然时间是一样的，但是用户体验会很好，修改后代码如下：
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) }
代码说明：
不等 loadProductWithParameters 返回直接 presentViewController ，解析失败再尝试用 openURL 的方式打开。
参考：
http://stackoverflow.com/questions/17871920/odd-behavior-with-skstoreproductviewcontroller
本文转自博客园农民伯伯的博客，原文链接：【Swift】 应用内显示 AppStore 某个应用的详情，如需转载请自行联系原博主。
