要跳转到另一个APP，需要另一个APP设置 URL types ,这不能传图，具体百度，很简单，这里假设设置为myAPP,再用下面方法跳转
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"myAPP:"]];
下为跳转到app store
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms://itunes.apple.com/app/……"]];
