IN swift 3.0
我需要在点击按钮时在节点服务器上发送一个字典，用户可以频繁点击或点击此按钮。
所以我需要在一个接一个的订单中将这个字典发送到队列中并有一些延迟。并且同时用户可以多次HIT按钮，但是QUEUE将逐个执行其工作，不依赖于按钮Click。 这是我的代码
func sendProductInCart(Product: NSString) {
delayWithSeconds(5) {
let msgToSend: String = String.init(format: "__JSON__START__%@__JSON__END__", Product)
print("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
print(msgToSend)
let data: Data? = msgToSend.data(using: String.Encoding.utf8)
_ = data?.withUnsafeBytes { self.outputStream.write($0, maxLength: (data?.count)!)
}
}
}
func delayWithSeconds(_ seconds: Double, completion: @escaping () -> ()) {
DispatchQueue.main.asyncAfter(deadline: .now() + seconds) {
completion()
}
}
但这不起作用。 5秒后所有产品发送到5秒范围内。我一次需要一个。 请分享您的宝贵知识。
输出5秒后（我有10次点击按钮）
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"2","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:09","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"3","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:09","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"4","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:09","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"5","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:09","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"6","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:09","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"7","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:09","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"8","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:10","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"9","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:10","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"10","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:10","connection_type":"cart"}__JSON__END__
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
__JSON__START__{"type": "4","message": {"categoryid":"1","productId":"2","productprice":"10.00","productimage":"http:\/\/183.182.84.77:8082\/Content\/ProductImages\/chips2.JPG","productname":"B-Chips Premimum appetizer 40g -40","chanelname":"88719922048109810977","quantity":"11","producttype":"0","categoryName":"Alimentacion"}, "sender_id":"8109810977", "reciever_id": "8871992204", "time": "10-12-2017 05:16:10","connection_type":"cart"}__JSON__END__