DispatchGroup AB执行完了执行C
2017-10-10 本文已影响15人
机智的猪
let group = DispatchGroup()
//A
group.enter()
DispatchQueue.global().async {
NetWorkTools.shareInstance.getInviteUrl(completion: { (dict, error) in
group.leave()
//........
})
}
//B
group.enter()
DispatchQueue.global().async {
NetWorkTools.shareInstance.getInviteUrl(completion: { (dict, error) in
group.leave()
//........
})
}
//C
group.notify(queue: DispatchQueue.main, execute: {
print("操作完成")
})
