Question

我遇到过很多与此类似的问题，但很多都是针对旧版本的Xcode，或者根本就没用。我使用Xcode版本8.3.2（8E2002）和Swift编码语言。我对编码知之甚少，但我很年轻，渴望学习！我正在创建一个clicker game，它会为您提供每秒游戏本身的资金。因此，如果你闲置2分钟，它会给你120美元（120秒每秒1美元）。除此之外，您还可以通过单击主要对象来赚钱。到目前为止，这是我的编码：

import UIKit

class ViewController: UIViewController {

var score = 0
var add = 1

func addpersec() {

    score += 1
}
//func used to add to the score based timer. Aka, adding 1 per second



@IBOutlet weak var scorecount: UILabel!


@IBAction func clicks(_ sender: Any) {
    score += 1
    scorecount.text = "Honey: \(score)"
}

@IBOutlet weak var Bees: UITableView!

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

Answer 1

with sub as
(
  select subcl.idclient, subf.clasification_value
         , subcl.client_name, subcl.client_code 
         , convert(varchar(20), subd.documents_series)+''+
           convert(varchar(6), subd.document_number) as invoice_series
  from invoices.clients subcl
  inner join invoices.clasifications subf
    on subf.cid_clasification = cl.cid_clasifclient1
  inner join invoices.documents subd
    on subd.cid_client = cl.cid_client
)

select distinct m.date, m.productcode, p.productname
      , f.family, cl.clientname, cl.clientcode
      , m.quantity, m.price, m.credit, m.total 
      , m.exchange,m.state, m.city
      , sub.clasification_value, sub.invoice_series

from invoices.movements m    
inner join invoices.products p
   on m.idproduct = p.idproduct
left outer join invoices.documents d
   on m.iddocument = d.iddocument
inner join invoices.coins c
   on d.idcoin = c.idcoin
inner join invoices.address a
   on a.iddocument = d.iddocument
inner join invoices.clasifications f
   on f.family='aspen'
inner join invoices.clients cl
  on d.idclient = cl.idclient
inner join sub
  on sub.idclient = cl.idclient

要使计时器无效，请致电class ViewController: UIViewController { var timer: Timer? = nil // Property override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. self.timer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(handleTimer), userInfo: nil, repeats: true) } func handleTimer(_ timer: Timer) { print("Timer ticking!") } }

Answer 2

您的问题似乎与iOS UI有关，因此我不知道我的回答是否有意义。

对于通用延迟函数执行（如Javascript＆＃39; DispatchQueue），您可以使用// have this as a global somewhere let bg = DispatchQueue(label: "bg", qos: .background, target: nil) // anywhere else in your code: // First decide the time to execute your function let delayInSeconds = 3 let when = DispatchTime.now() + delayInSeconds // call it bg.asyncAfter(deadline: when) { // code to execute later (this is the body of an anonymous function) }

{{1}}

如何使用Swift添加计时器？

2 个答案: