iPhone应用中加入评分功能

可通过构造如下的URL来使得程序直接跳转到App Store中的评价页面

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