iOS应用跳转问题之：应用跳转

简单明了，打开第三方APP代码：

    NSURL *url = [ NSURL URLWithString : @"alipay://" ];

    if(![[UIApplication sharedApplication] canOpenURL:url]){

        [[ UIApplication sharedApplication ] openURL :[ NSURL URLWithString : @" https://www.alipay.com " ]];

    } else {

        [[ UIApplication sharedApplication ] openURL :url];

    }