我是新手程序员,正在尝试用Swift编写井字棋应用程序。这个错误阻止了我运行应用程序:property 'self.circle1' not initialized at super.init call。
应用程序还没有完成,但我不知道现有代码中的错误在哪里。请详细解释任何建议,因为我再次是初学者。谢谢! 我的代码:
import UIKit
class ViewController: UIViewController {
//Initializing all imgs as variables:
@IBOutlet strong var circle1: UIImageView
@IBOutlet strong var circle2: UIImageView
@IBOutlet strong var circle3: UIImageView
@IBOutlet strong var circle4: UIImageView
@IBOutlet strong var circle5: UIImageView
@IBOutlet strong var circle6: UIImageView
@IBOutlet strong var circle7: UIImageView
@IBOutlet strong var circle8: UIImageView
@IBOutlet strong var circle9: UIImageView
@IBOutlet strong var circleBtn1: UIButton
@IBOutlet strong var circleBtn2: UIButton
@IBOutlet strong var circleBtn3: UIButton
@IBOutlet strong var circleBtn4: UIButton
@IBOutlet strong var circleBtn5: UIButton
@IBOutlet strong var circleBtn6: UIButton
@IBOutlet strong var circleBtn7: UIButton
@IBOutlet strong var circleBtn8: UIButton
@IBOutlet strong var circleBtn9: UIButton
@IBOutlet strong var resetBtn: UIButton
@IBOutlet strong var ResultsLabel: UILabel
//Creating variables:
var plays = Dictionary<Int,Int>()
var done = false
var aiDeciding = false
//Function that says what to do if a UIButton is clicked:
@IBAction func UIbuttonClicked(sender:UIButton) {
ResultsLabel.hidden = true
if !plays[sender.tag] && !aiDeciding && !done {
setImgforCircle(sender.tag, player:1)
}
//Executing these functions:
checkforWin()
aiTurn()
}
//Function that sets an X or O in the proper circle depending on player:
func setImgforCircle(spot:Int, player:Int) {
var playerMark = player == 1 ? "x" : "o"
plays[spot] = player
switch spot {
case 1:
circle1.image = UIImage(named: playerMark)
case 2:
circle2.image = UIImage(named: playerMark)
case 3:
circle3.image = UIImage(named: playerMark)
case 4:
circle4.image = UIImage(named: playerMark)
case 5:
circle5.image = UIImage(named: playerMark)
case 6:
circle6.image = UIImage(named: playerMark)
case 7:
circle7.image = UIImage(named: playerMark)
case 8:
circle8.image = UIImage(named: playerMark)
case 9:
circle9.image = UIImage(named: playerMark)
default:
circle2.image = UIImage(named: playerMark)
}
}
//Function that sees if certain paths of circles have the same mark
func checkforWin() {
var whoWon = ["Lost":0, "Won":1]
for (key,value) in whoWon {
if ((plays[1] == value && plays[2] == value && plays[3] == value) || //across top row
(plays[4] == value && plays[5] == value && plays[6] == value) || //across middle row
(plays[7] == value && plays[8] == value && plays[9] == value) || //across bottom row
(plays[1] == value && plays[4] == value && plays[7] == value) || //down left column
(plays[2] == value && plays[5] == value && plays[8] == value) || //down middle column
(plays[3] == value && plays[6] == value && plays[9] == value) || //down right column
(plays[1] == value && plays[5] == value && plays[9] == value) || //diagonal going right
(plays[7] == value && plays[5] == value && plays[3] == value)) { //diagonal going left
ResultsLabel.hidden = false
ResultsLabel.text = "You \(key)!"
}
}
}
func aiTurn() {
}
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.
}
}
strong
关键字?如果你移除strong
,你的错误就会消失。或者,如果你要让它们变成strong
,你必须在你的init
方法中初始化它们。 - RobIBOutlet
总是使用weak
关键字。 - holex