最近突然發現APP內給應用評分功能跳轉到App Store之後提示“無法連線到App Store”，研究之後發現是iOS 11系統的適配問題，這裡記錄下解決方法。

iOS 11以前你的跳轉App Store評分程式碼可能這樣寫的：

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?id=xxxxxx&pageNumber=0&sortOrdering=2&type=Purple+Software&mt=8"]];
 

iOS 11之後要改為：

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://itunes.apple.com/cn/app/idxxxxxx?mt=8&action=write-review"]];

為了適配，所以：

if (@available(iOS 11.0, *)) {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://itunes.apple.com/cn/app/idxxxxxx?mt=8&action=write-review"]];
    }else{
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?id=xxxxxx&pageNumber=0&sortOrdering=2&type=Purple+Software&mt=8"]];
    }