很多用户用了好软件后忘记或嫌麻烦而不去 App Store 进行打分评星，为此开发者可以在应用中加入打分按钮，点击后直接跳转到 App Store 的评分界面。

    App Store 上评论的链接地址是 itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id = appID

    所以可以用这段代码

        NSString *str = [NSString stringWithFormat:

                         @"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa     /wa/viewContentsUserReviews?type=Purple+Software&id=%d",                          m_appleID ];          [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];