我在 Swift 中做一个 iPhone 项目，在我的 homeScreen 顶部，我在堆栈中添加多个视图。
我的要求是能够像 Tinder 刷卡效果一样在 homeScreen 顶部移动每个单独的子视图。我正在使用 UIPanGesture来实现这一点，以便每个单独的视图都跟随我在屏幕上的手指。
但我的问题是，所有视图堆栈都在我的主屏幕上一起移动，而不是只移动一个屏幕的预期效果。在过去的 4 天里，我一直被这个问题困扰。请帮帮我。
Xcode 版本 7.2.1 和 Swift 2.1
这是移动的代码UIView：
//For creating each childView and adding UIPanGestureRecognizer to each childView
func configureInitialViewPlacement() -> Void {
for var i:Int = cardsArray.count-1; 0 <= i; i--
{
let cardView = cardsArray[i]
let panGestureRecognizer = UIPanGestureRecognizer(target: self, action: "beingDragged:")
cardView.addGestureRecognizer(panGestureRecognizer)
self.view.addSubview(cardView)
var frame = CGRectZero
var originalFrame = self.view.bounds
originalFrame = CGRectMake(originalFrame.origin.x+10,originalFrame.origin.y+10 , originalFrame.size.width-20, originalFrame.size.height-20)
frame.size.height = originalFrame.size.height
frame.size.width = originalFrame.size.width - CGFloat((2*CGFloat(i)*paddingOffset))
frame.origin.x = originalFrame.origin.x + CGFloat((CGFloat(i)*paddingOffset))
frame.origin.y = originalFrame.origin.y + CGFloat((CGFloat(i)*paddingOffset))
cardView.frame = frame
cardView.setContentViewForCard(cardDataArray[i])
}
}
// Method For gestureRecognizer
func beingDragged(gestureRecognizer: UIPanGestureRecognizer) -> Void {
xFromCenter = Float(gestureRecognizer.translationInView(self.view).x)
yFromCenter = Float(gestureRecognizer.translationInView(self.view).y)
switch gestureRecognizer.state {
case UIGestureRecognizerState.Began:
self.originPoint = self.view.center
case UIGestureRecognizerState.Changed:
let rotationStrength: Float = min(xFromCenter/ROTATION_STRENGTH, ROTATION_MAX)
let rotationAngle = ROTATION_ANGLE * rotationStrength
let scale = max(1 - fabsf(rotationStrength) / SCALE_STRENGTH, SCALE_MAX)
self.view.center = CGPointMake(self.originPoint.x + CGFloat(xFromCenter), self.originPoint.y + CGFloat(yFromCenter))
let transform = CGAffineTransformMakeRotation(CGFloat(rotationAngle))
let scaleTransform = CGAffineTransformScale(transform, CGFloat(scale), CGFloat(scale))
self.view.transform = scaleTransform
self.updateOverlay(CGFloat(xFromCenter))
case UIGestureRecognizerState.Ended:
self.afterSwipeAction()
case UIGestureRecognizerState.Possible:
fallthrough
case UIGestureRecognizerState.Cancelled:
fallthrough
case UIGestureRecognizerState.Failed:
fallthrough
default:
break
}
}
func afterSwipeAction() -> Void {
let floatXFromCenter = Float(xFromCenter)
if floatXFromCenter > ACTION_MARGIN {
self.rightAction()
} else if floatXFromCenter < -ACTION_MARGIN {
self.leftAction()
} else {
UIView.animateWithDuration(0.3, animations: {() -> Void in
self.view.center = self.originPoint
self.view.transform = CGAffineTransformMakeRotation(0)
})
}
}
// For Right Swipe
func rightAction() -> Void {
let finishPoint: CGPoint = CGPointMake(500, 2 * CGFloat(yFromCenter) + self.originPoint.y)
UIView.animateWithDuration(0.3,
animations: {
self.view.center = finishPoint
}, completion: {
(value: Bool) in
self.cardsArray[0].removeFromSuperview()
})
delegateforcard.cardSwipedRight(self.cardsArray[0])
}
// For Left Swipe
func leftAction() -> Void {
let finishPoint: CGPoint = CGPointMake(-500, 2 * CGFloat(yFromCenter) + self.originPoint.y)
UIView.animateWithDuration(0.3,
animations: {
self.view.center = finishPoint
}, completion: {
(value: Bool) in
self.cardsArray[0].removeFromSuperview()
})
delegateforcard.cardSwipedLeft(self.cardsArray[0])
}
如果您需要更多说明，请告诉我。谢谢。