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【Swift】应用内显示 AppStore 某个应用的详情

日期：2017-12-03点击：391收藏

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) }