应用跳转到App Store内 （可带关键字）

1、普通的跳转下载

NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"https://itunes.apple.com/cn/app/id1368802138?mt=8"]];
[[UIApplication sharedApplication] openURL:url];

2、跳转到到APPStroe 带关键字搜索功能

NSString*str = [NSString stringWithFormat:@"https://itunes.apple.com/WebObjects/MZStore.woa/wa/search?mt=8&submit=edit&term=%@#software",[@"三维之家" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ];
    [[UIApplication sharedApplication]openURL:[NSURL URLWithString:str]];