iOS11:
注意：id%@ ?： id后面是沒(méi)有 = 號(hào)的Ｌ逭丁传透！
NSString *urlStr = [NSString stringWithFormat:@"itms-apps://itunes.apple.com/cn/app/id%@?mt=8&action=write-review",@"xxxxx"];
?小于 iOS11 ：
urlStr = [NSString stringWithFormat:@"itms- ? ? ? ? ? ? ? ? ? apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=%@&pageNumber=0&sortOrdering=2&mt=8",@"xxxxx"];
