我已经构建了一个带有多个视图控制器的Ipad游戏，在其开始时（在ROOT VC）它会从2小时开始计时器倒计时。在XCODE 8.2.1 / Swift 3上运行。
在ViewController的下游（第6或第7），我有一个迷你游戏，用户通过TouchesBegan / TouchesMoved / TouchesEnded将8个可用的UIImageViews拖放到其他4个UIImageViews（有点像空插槽）中。 （UIImageViews由Interface Builder设置）。
屏幕顶部有一个标签（UserInteraction =禁用），每隔1秒更新一次到当前时间（2小时倒计时），通过当前View Controller加载时触发的Timer（ showgametimeTimer在下面的代码中。）
问题是：这会弄乱迷你游戏（当用户用手指结束拖动时，图像无法＆＃34;锁定＆＃34;在目标位置）和这个＆＃34;故障＆＃34;仅在更新标签的计时器正在运行时发生。
如果我禁用了计时器，一切都运行正常并且符合预期。
因此，以某种方式每隔1秒从计时器更新UILabel.text，会调用影响TouchesBegan和/或TouchesEnded的内容。
UILabel.text位于屏幕顶部，要移动的对象位于底部。我尝试设置布尔逻辑 - 即touchesBegan开头的timer.invalidate，在TouchesEnded结束时恢复计时器，无济于事，问题仍然存在。
解决此问题的唯一方法是通过为此View Controller完全禁用计时器。
我正在添加代码，虽然我认为这不会真正有助于查看问题 - 我只是想知道是否有人遇到了同样的问题，或者是否了解它的原因/如何解决？初学者程序员在这里。
非常感谢
相关代码：
var showGameTimeTimer = Timer()
override func viewDidLoad() {
super.viewDidLoad()
showGameTimeTimer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(showTime), userInfo: nil, repeats: true)
showGameTimeTimer.fire()
}
func showTime(){
TimeLeftLabel.text = gameTimerString // gametimerstring gets updated every second from a timer fired at the Root VC
}
var initialPosi = CGPoint()
var initialPosiSecond = CGPoint()
var initialPosiThird = CGPoint()
var initialPosiFourth = CGPoint()
var initialPosiFifth = CGPoint()
var initialPosiSixth = CGPoint()
var initialPosiSeventh = CGPoint()
var initialPosiEigth = CGPoint()
var hasTakenFromFirstSlot = 0
var hasTakenFromSecondSlot = 0
var hasTakenFromThirdSlot = 0
var hasTakenFromFourthSlot = 0
var imageSelected = 0
var firstSlotIsTaken = 0
var secondSlotIsTaken = 0
var thirdSlotIsTaken = 0
var fourthSlotIsTaken = 0
var firstSlotHasImageNumber = 0
var secondSlotHasImageNumber = 0
var thirdSlotHasImageNumber = 0
var fourthSlotHasImageNumber = 0
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in (touches) {
let location = touch.location(in: self.view)
hasTakenFromFirstSlot = 0
hasTakenFromSecondSlot = 0
hasTakenFromThirdSlot = 0
hasTakenFromFourthSlot = 0
if FirstImage.frame.contains(location) {
imageSelected = 1
FirstImage.center = location
}
if secondImage.frame.contains(location) {
imageSelected = 2
secondImage.center = location
}
if thirdImage.frame.contains(location) {
imageSelected = 3
thirdImage.center = location
}
if fourthImage.frame.contains(location) {
imageSelected = 4
fourthImage.center = location
}
if fifthImage.frame.contains(location) {
imageSelected = 5
fifthImage.center = location
}
if sixthImage.frame.contains(location) {
imageSelected = 6
sixthImage.center = location
}
if seventhImage.frame.contains(location) {
imageSelected = 7
seventhImage.center = location
}
if eightImage.frame.contains(location) {
imageSelected = 8
eightImage.center = location
}
if (FirstImage.frame.contains(location) || secondImage.frame.contains(location) || thirdImage.frame.contains(location) || fourthImage.frame.contains(location) || fifthImage.frame.contains(location) || sixthImage.frame.contains(location) || seventhImage.frame.contains(location) || eightImage.frame.contains(location) ) && firstCorrectImage.frame.contains(location) && firstSlotIsTaken > 0 && firstSlotHasImageNumber > 0 {
hasTakenFromFirstSlot = 1
}
if (FirstImage.frame.contains(location) || secondImage.frame.contains(location) || thirdImage.frame.contains(location) || fourthImage.frame.contains(location) || fifthImage.frame.contains(location) || sixthImage.frame.contains(location) || seventhImage.frame.contains(location) || eightImage.frame.contains(location) ) && secondCorrectImage.frame.contains(location) && secondSlotIsTaken > 0 && secondSlotHasImageNumber > 0 {
hasTakenFromSecondSlot = 1
}
if (FirstImage.frame.contains(location) || secondImage.frame.contains(location) || thirdImage.frame.contains(location) || fourthImage.frame.contains(location) || fifthImage.frame.contains(location) || sixthImage.frame.contains(location) || seventhImage.frame.contains(location) || eightImage.frame.contains(location) ) && thirdCorrectImage.frame.contains(location) && thirdSlotHasImageNumber > 0 && thirdSlotIsTaken > 0 {
hasTakenFromThirdSlot = 1
}
if (FirstImage.frame.contains(location) || secondImage.frame.contains(location) || thirdImage.frame.contains(location) || fourthImage.frame.contains(location) || fifthImage.frame.contains(location) || sixthImage.frame.contains(location) || seventhImage.frame.contains(location) || eightImage.frame.contains(location) ) && fourthCorrectImage.frame.contains(location) && fourthSlotIsTaken > 0 && fourthSlotHasImageNumber > 0 {
hasTakenFromFourthSlot = 1
}
if firstCorrectImage.frame.contains(location) && FirstImage.frame.contains(location) == false && secondImage.frame.contains(location) == false && thirdImage.frame.contains(location) == false && fourthImage.frame.contains(location) == false && fifthImage.frame.contains(location) == false && sixthImage.frame.contains(location) == false && seventhImage.frame.contains(location) == false && eightImage.frame.contains(location) == false {
firstSlotIsTaken = 0
}
if secondCorrectImage.frame.contains(location) && FirstImage.frame.contains(location) == false && secondImage.frame.contains(location) == false && thirdImage.frame.contains(location) == false && fourthImage.frame.contains(location) == false && fifthImage.frame.contains(location) == false && sixthImage.frame.contains(location) == false && seventhImage.frame.contains(location) == false && eightImage.frame.contains(location) == false {
secondSlotIsTaken = 0
}
if thirdCorrectImage.frame.contains(location) && FirstImage.frame.contains(location) == false && secondImage.frame.contains(location) == false && thirdImage.frame.contains(location) == false && fourthImage.frame.contains(location) == false && fifthImage.frame.contains(location) == false && sixthImage.frame.contains(location) == false && seventhImage.frame.contains(location) == false && eightImage.frame.contains(location) == false {
thirdSlotIsTaken = 0
}
if fourthCorrectImage.frame.contains(location) && FirstImage.frame.contains(location) == false && secondImage.frame.contains(location) == false && thirdImage.frame.contains(location) == false && fourthImage.frame.contains(location) == false && fifthImage.frame.contains(location) == false && sixthImage.frame.contains(location) == false && seventhImage.frame.contains(location) == false && eightImage.frame.contains(location) == false {
fourthSlotIsTaken = 0
}
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in (touches) {
let location = touch.location(in: self.view)
if imageSelected == 1 {
FirstImage.center = location
}
if imageSelected == 2 {
secondImage.center = location
}
if imageSelected == 3 {
thirdImage.center = location
}
if imageSelected == 4 {
fourthImage.center = location
}
if imageSelected == 5 {
fifthImage.center = location
}
if imageSelected == 6 {
sixthImage.center = location
}
if imageSelected == 7 {
seventhImage.center = location
}
if imageSelected == 8 {
eightImage.center = location
}
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in (touches) {
let location = touch.location(in: self.view)
if firstCorrectImage.frame.contains(location) && firstSlotIsTaken == 0 && hasTakenFromSecondSlot == 0 && hasTakenFromThirdSlot == 0 && hasTakenFromFourthSlot == 0 {
if imageSelected > 0 {
audioPlayerOne.play()
}
firstSlotIsTaken = 1
if imageSelected == 1 {
FirstImage.center = firstCorrectImage.center
firstSlotHasImageNumber = 1
}
if imageSelected == 2 {
secondImage.center = firstCorrectImage.center
firstSlotHasImageNumber = 2}
if imageSelected == 3 {
thirdImage.center = firstCorrectImage.center
firstSlotHasImageNumber = 3}
if imageSelected == 4 {
fourthImage.center = firstCorrectImage.center
firstSlotHasImageNumber = 4}
if imageSelected == 5 {
fifthImage.center = firstCorrectImage.center
firstSlotHasImageNumber = 5}
if imageSelected == 6 {
sixthImage.center = firstCorrectImage.center
firstSlotHasImageNumber = 6}
if imageSelected == 7 {
seventhImage.center = firstCorrectImage.center
firstSlotHasImageNumber = 7}
if imageSelected == 8 {
eightImage.center = firstCorrectImage.center
firstSlotHasImageNumber = 8}
} else { if secondCorrectImage.frame.contains(location) && secondSlotIsTaken == 0 && hasTakenFromFirstSlot == 0 && hasTakenFromThirdSlot == 0 && hasTakenFromFourthSlot == 0 {
if imageSelected > 0 {
audioPlayerOne.play()
}
secondSlotIsTaken = 1
if imageSelected == 1 {
FirstImage.center = secondCorrectImage.center
secondSlotHasImageNumber = 1}
if imageSelected == 2 {
secondImage.center = secondCorrectImage.center
secondSlotHasImageNumber = 2}
if imageSelected == 3 {
thirdImage.center = secondCorrectImage.center
secondSlotHasImageNumber = 3}
if imageSelected == 4 {
fourthImage.center = secondCorrectImage.center
secondSlotHasImageNumber = 4}
if imageSelected == 5 {
fifthImage.center = secondCorrectImage.center
secondSlotHasImageNumber = 5}
if imageSelected == 6 {
sixthImage.center = secondCorrectImage.center
secondSlotHasImageNumber = 6}
if imageSelected == 7 {
seventhImage.center = secondCorrectImage.center
secondSlotHasImageNumber = 7}
if imageSelected == 8 {
eightImage.center = secondCorrectImage.center
secondSlotHasImageNumber = 8}
} else { if thirdCorrectImage.frame.contains(location) && thirdSlotIsTaken == 0 && hasTakenFromSecondSlot == 0 && hasTakenFromFirstSlot == 0 && hasTakenFromFourthSlot == 0 {
if imageSelected > 0 {
audioPlayerOne.play()
}
thirdSlotIsTaken = 1
if imageSelected == 1 {
FirstImage.center = thirdCorrectImage.center
thirdSlotHasImageNumber = 1}
if imageSelected == 2 {
secondImage.center = thirdCorrectImage.center
thirdSlotHasImageNumber = 2}
if imageSelected == 3 {
thirdImage.center = thirdCorrectImage.center
thirdSlotHasImageNumber = 3}
if imageSelected == 4 {
fourthImage.center = thirdCorrectImage.center
thirdSlotHasImageNumber = 4}
if imageSelected == 5 {
fifthImage.center = thirdCorrectImage.center
thirdSlotHasImageNumber = 5}
if imageSelected == 6 {
sixthImage.center = thirdCorrectImage.center
thirdSlotHasImageNumber = 6}
if imageSelected == 7 {
seventhImage.center = thirdCorrectImage.center
thirdSlotHasImageNumber = 7}
if imageSelected == 8 {
eightImage.center = thirdCorrectImage.center
thirdSlotHasImageNumber = 8}
} else { if fourthCorrectImage.frame.contains(location) && fourthSlotIsTaken == 0 && hasTakenFromFirstSlot == 0 && hasTakenFromSecondSlot == 0 && hasTakenFromThirdSlot == 0 {
if imageSelected > 0 {
audioPlayerOne.play()
}
fourthSlotIsTaken = 1
if imageSelected == 1 {
FirstImage.center = fourthCorrectImage.center
fourthSlotHasImageNumber = 1
}
if imageSelected == 2 {
secondImage.center = fourthCorrectImage.center
fourthSlotHasImageNumber = 2
}
if imageSelected == 3 {
thirdImage.center = fourthCorrectImage.center
fourthSlotHasImageNumber = 3
}
if imageSelected == 4 {
fourthImage.center = fourthCorrectImage.center
fourthSlotHasImageNumber = 4
}
if imageSelected == 5 {
fifthImage.center = fourthCorrectImage.center
fourthSlotHasImageNumber = 5
}
if imageSelected == 6 {
sixthImage.center = fourthCorrectImage.center
fourthSlotHasImageNumber = 6
}
if imageSelected == 7 {
seventhImage.center = fourthCorrectImage.center
fourthSlotHasImageNumber = 7
}
if imageSelected == 8 {
eightImage.center = fourthCorrectImage.center
fourthSlotHasImageNumber = 8
}
} else {
UIView.animate(withDuration: 0.2, delay: 0, options: UIViewAnimationOptions(rawValue: UInt(0)), animations: ({
self.audioPlayerTwo.play()
if self.hasTakenFromFourthSlot == 1 {
self.hasTakenFromFourthSlot = 0
self.fourthSlotIsTaken = 0
self.fourthSlotHasImageNumber = 0
}
if self.hasTakenFromThirdSlot == 1 {
self.hasTakenFromThirdSlot = 0
self.thirdSlotIsTaken = 0
self.thirdSlotHasImageNumber = 0
}
if self.hasTakenFromSecondSlot == 1 {
self.hasTakenFromSecondSlot = 0
self.secondSlotIsTaken = 0
self.secondSlotHasImageNumber = 0
}
if self.hasTakenFromFirstSlot == 1 {
self.hasTakenFromFirstSlot = 0
self.firstSlotIsTaken = 0
self.firstSlotHasImageNumber = 0
}
self.getBackToInitialPosi()
}), completion: nil)
}
}}}}
if firstSlotHasImageNumber == 0 {
firstSlotIsTaken = 0
}
if secondSlotHasImageNumber == 0 {
secondSlotIsTaken = 0
}
if thirdSlotHasImageNumber == 0 {
thirdSlotIsTaken = 0
}
if fourthSlotHasImageNumber == 0 {
fourthSlotIsTaken = 0
}
imageSelected = 0
}
func getBackToInitialPosi() {
if self.imageSelected == 1 {
self.FirstImage.center = self.initialPosi }
if self.imageSelected == 2 {
self.secondImage.center = self.initialPosiSecond }
if self.imageSelected == 3 {
self.thirdImage.center = self.initialPosiThird }
if self.imageSelected == 4 {
self.fourthImage.center = self.initialPosiFourth }
if self.imageSelected == 5 {
self.fifthImage.center = self.initialPosiFifth }
if self.imageSelected == 6 {
self.sixthImage.center = self.initialPosiSixth }
if self.imageSelected == 7 {
self.seventhImage.center = self.initialPosiSeventh }
if self.imageSelected == 8 {
self.eightImage.center = self.initialPosiEigth }
imageSelected = 0
}
func resetImages() {
hasTakenFromFirstSlot = 0
hasTakenFromSecondSlot = 0
hasTakenFromThirdSlot = 0
hasTakenFromFourthSlot = 0
imageSelected = 0
firstSlotIsTaken = 0
secondSlotIsTaken = 0
thirdSlotIsTaken = 0
fourthSlotIsTaken = 0
firstSlotHasImageNumber = 0
secondSlotHasImageNumber = 0
thirdSlotHasImageNumber = 0
fourthSlotHasImageNumber = 0
}
答案 0 :(得分：0)
我不明白为什么投票这个问题的人在我发布它后显然没有读过这个问题的30秒后呢？也许应该在发布问题后添加一个冷却计时器，防止此类人员像这样伤害社区。
无论如何，我设法解决了这个问题，所以发布解决方案以防将来有人帮助。
我所要做的就是添加用UITrackingRunLoopMode更新UILabel的计时器，如下所示：
showGameTimeTimer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(showTime), userInfo: nil, repeats: true)
RunLoop.main.add(showGameTimeTimer, forMode: RunLoopMode.UITrackingRunLoopMode)
showGameTimeTimer.fire()
func showTime(){
globalTimeLeftLabel.text = gameTimerString
}
这阻止了它在触发触发时重置可拖动图像