最近突然发现APP内给应用评分功能跳转到App Store之后提示“无法连接到App Store”，研究之后发现是iOS 11系统的适配问题，这里记录下解决方法。
iOS 11以前你的跳转App Store评分代码可能这样写的：
[[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之后要改为：
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://itunes.apple.com/cn/app/idxxxxxx?mt=8&action=write-review"]];
为了适配，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"]];
}
https://blog.csdn.net/txz_gray/article/details/81364107
https://www.jianshu.com/p/010ba9153926
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