跳转到App Store页面 评价页面与应用下载页面

//跳转到评价页面

NSString *str = 

[NSString stringWithFormat:@"http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?id=%d&pageNumber=0&sortOrdering=2&type=Purple+Software&mt=8",1234567890];

[[UIApplication sharedApplication] openURL:[NSURL URLWithString: str] ];

//跳转到应用页面下载

NSString *str = 

[NSString stringWithFormat:@"http://itunes.apple.com/us/app/id%d",1234567890];

[[UIApplication sharedApplication]openURL:[NSURL URLWithString: str] ];

ios 跳转到QQ加群

http://qun.qq.com/join.html