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IOS 應用內顯示 AppStore 某個應用的詳情

編輯:關於IOS教程

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!!怎麼忍?!

 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,修改後代碼如下:

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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