前言
应用内跳转到 AppStore 的文章很多，一般都是用 SKStoreProductViewController 来实现的，不知道有没有在意一个问题：打开很慢！！怎么忍？！
正文
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
结束: 以上就是对ISO 应用内打开AppStorn显示某个应用详情，有需要的朋友可以参考下。
