Ios UIView上的深度页面转换，Swift

如何像这样创建深度页面变换动画（从上到下，从下到上）。我在谷歌上搜索过，但我不知道如何在iOS上实现

如下所示的示例输出：

我遵循了教程，得到了以下效果：

如果您不想阅读整个教程，以下是您必须做的： 1.创建

TrasitionManager

类 这是设置视图应如何变换的位置

let offScreenRight = CGAffineTransformConcat(CGAffineTransformMakeTranslation(container!.frame.width, 0), CGAffineTransformMakeScale(0.1, 0.1))
let offScreenLeft = CGAffineTransformMakeTranslation(-container!.frame.width, 0)

在这种情况下，一个视图将平移+缩放，而另一个视图仅平移

2.在

ViewController

中实例化

TransitionManager

3.设置转换委托 如果希望视图来自右侧，

leftSide=false

transitionManager.leftSide = false

就这样

编辑： 为了达到这一效果：

以下是该项目的git：

使用对齐约束调整尺寸：

创建两个与其父视图具有相同宽度/高度的视图

将两者与CenterX对齐

将“与底部的距离”设定为0，并为约束创建一个出口

创建一个

PanGestureRecognizer

根据平移视图.ytranslationView.y设置前视图底部约束的动画

---

下面是制作新swift文件并复制此代码的解决方案

import UIKit

class UltravisualLayout: UICollectionViewLayout {

    private var contentWidth:CGFloat!
    private var contentHeight:CGFloat!
    private var yOffset:CGFloat = 0

    var maxAlpha:CGFloat = 1
    var minAlpha:CGFloat = 0

     //DEFAULT VALUES
    //var widthOffset:CGFloat = 35
    // var heightOffset:CGFloat = 35

    var widthOffset:CGFloat = 100
    var heightOffset:CGFloat = 100
    private var cache = [UICollectionViewLayoutAttributes]()

    private var itemWidth:CGFloat{
        return (collectionView?.bounds.width)!
    }
    private var itemHeight:CGFloat{
        return (collectionView?.bounds.height)!
    }
    private var collectionViewHeight:CGFloat{
        return (collectionView?.bounds.height)!
    }


    private var numberOfItems:Int{
        return (collectionView?.numberOfItemsInSection(0))!
    }


    private var dragOffset:CGFloat{
        return (collectionView?.bounds.height)!
    }
    private var currentItemIndex:Int{
        return max(0, Int(collectionView!.contentOffset.y / collectionViewHeight))
    }

    var nextItemBecomeCurrentPercentage:CGFloat{
        return (collectionView!.contentOffset.y / (collectionViewHeight)) - CGFloat(currentItemIndex)
    }

    override func prepareLayout() {
        cache.removeAll(keepCapacity: false)
        yOffset = 0

        for item in 0 ..< numberOfItems{

            let indexPath = NSIndexPath(forItem: item, inSection: 0)
            let attribute = UICollectionViewLayoutAttributes(forCellWithIndexPath: indexPath)
            attribute.zIndex = -indexPath.row

            if (indexPath.item == currentItemIndex+1) && (indexPath.item < numberOfItems){

                attribute.alpha = minAlpha + max((maxAlpha-minAlpha) * nextItemBecomeCurrentPercentage, 0)
                let width = itemWidth - widthOffset + (widthOffset * nextItemBecomeCurrentPercentage)
                let height = itemHeight - heightOffset + (heightOffset * nextItemBecomeCurrentPercentage)

                let deltaWidth =  width/itemWidth
                let deltaHeight = height/itemHeight

                attribute.frame = CGRectMake(0, yOffset, itemWidth, itemHeight)
                attribute.transform = CGAffineTransformMakeScale(deltaWidth, deltaHeight)

                attribute.center.y = (collectionView?.center.y)! +  (collectionView?.contentOffset.y)!
                attribute.center.x = (collectionView?.center.x)! + (collectionView?.contentOffset.x)!
                yOffset += collectionViewHeight

            }else{
                attribute.frame = CGRectMake(0, yOffset, itemWidth, itemHeight)
                attribute.center.y = (collectionView?.center.y)! + yOffset
                attribute.center.x = (collectionView?.center.x)!
                yOffset += collectionViewHeight
            }
            cache.append(attribute)
        }
    }

    //Return the size of ContentView
    override func collectionViewContentSize() -> CGSize {
        contentWidth = (collectionView?.bounds.width)!
        contentHeight = CGFloat(numberOfItems) * (collectionView?.bounds.height)!
        return CGSizeMake(contentWidth, contentHeight)
    }

    //Return Attributes  whose frame lies in the Visible Rect
    override func layoutAttributesForElementsInRect(rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
        var layoutAttributes = [UICollectionViewLayoutAttributes]()
        for attribute in cache{
            if CGRectIntersectsRect(attribute.frame, rect){
                layoutAttributes.append(attribute)
            }
        }
        return layoutAttributes
    }


    override func shouldInvalidateLayoutForBoundsChange(newBounds: CGRect) -> Bool {
        return true
    }

    override func targetContentOffsetForProposedContentOffset(proposedContentOffset: CGPoint, withScrollingVelocity velocity: CGPoint) -> CGPoint {
        let itemIndex = round(proposedContentOffset.y / (dragOffset))
        let yOffset = itemIndex * (collectionView?.bounds.height)!
        return CGPoint(x: 0, y: yOffset)
    }
    override func layoutAttributesForItemAtIndexPath(indexPath: NSIndexPath) -> UICollectionViewLayoutAttributes? {

        // Logic that calculates the UICollectionViewLayoutAttributes of the item
        // and returns the UICollectionViewLayoutAttributes
        return UICollectionViewLayoutAttributes(forCellWithIndexPath: indexPath)
    }

}

导入UIKit
类UltravisualLayout:UICollectionViewLayout{
私有变量contentWidth:CGFloat！
私有变量contentHeight:CGFloat！
私有变量yOffset:CGFloat=0
var maxapha:CGFloat=1
var minAlpha:CGFloat=0
//默认值
//变量宽度偏移量：CGFloat=35
//变量高度偏移：CGFloat=35
变量宽度偏移量：CGFloat=100
变量高度偏移：CGFloat=100
私有变量缓存=[UICollectionViewLayoutAttribute]（）
私有var itemWidth:CGFloat{
返回（collectionView？.bounds.width）！
}
私有变量itemHeight:CGFloat{
返回（collectionView？.bounds.height）！
}
私有变量集合视图高度：CGFloat{
返回（collectionView？.bounds.height）！
}
私有变量numberOfItems:Int{
返回（collectionView？.numberOfItemsInSection（0））！
}
私有变量dragOffset:CGFloat{
返回（collectionView？.bounds.height）！
}
私有变量currentItemIndex:Int{
返回最大值（0，Int（collectionView！.contentOffset.y/collectionViewHeight））
}
var nextItemBecomeCurrentPercentage:CGFloat{
返回（collectionView！.contentOffset.y/（collectionViewHeight））-CGFloat（currentItemIndex）
}
重写函数prepareLayout（）{
cache.removeAll（keepCapacity:false）
yOffset=0
对于0..CGSize{
contentWidth=（collectionView？.bounds.width）！
contentHeight=CGFloat（numberOfItems）*（collectionView？.bounds.height）！
返回CGSizeMake（contentWidth、contentHeight）
}
//返回帧位于可见矩形中的属性
重写func LayoutAttribute ForelementsInRect（rect:CGRect）->[UICollectionViewLayoutAttribute]{
变量LayoutAttribute=[UICollectionViewLayoutAttribute]（）
对于缓存中的属性{
如果CGRectIntersectsRect（attribute.frame，rect）{
layoutAttributes.append（属性）
}
}
返回布局属性
}
覆盖函数应为边界设置（新边界：CGRect）->Bool验证布局{
返回真值
}
覆盖func targetContentOffsetForProposedContentOffset（proposedContentOffset:CGPoint，使用CrollingVelocity:CGPoint）->CGPoint{
设itemIndex=round（proposedContentOffset.y/（dragOffset））
让yOffset=itemIndex*（collectionView？.bounds.height）！
返回点（x:0，y:y偏移）
}
重写func LayoutAttribute ForItemAtIndexPath（indexPath:NSIndexPath）->UICollectionViewLayoutAttribute{
//计算项的UICollectionViewLayoutAttribute的逻辑
//并返回UICollectionViewLayoutAttribute
返回UICollectionViewLayoutAttribute（forCellWithIndexPath:indexPath）
}
}

在Main.storyboard文件中，使用UICollectionView或UICollectionViewController 组件选择UICollectionView转到属性检查

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    transitionManager.leftSide = false
    let toViewController = segue.destinationViewController
    toViewController.transitioningDelegate = self.transitionManager
}

transitionManager.leftSide = false

import UIKit

class UltravisualLayout: UICollectionViewLayout {

    private var contentWidth:CGFloat!
    private var contentHeight:CGFloat!
    private var yOffset:CGFloat = 0

    var maxAlpha:CGFloat = 1
    var minAlpha:CGFloat = 0

     //DEFAULT VALUES
    //var widthOffset:CGFloat = 35
    // var heightOffset:CGFloat = 35

    var widthOffset:CGFloat = 100
    var heightOffset:CGFloat = 100
    private var cache = [UICollectionViewLayoutAttributes]()

    private var itemWidth:CGFloat{
        return (collectionView?.bounds.width)!
    }
    private var itemHeight:CGFloat{
        return (collectionView?.bounds.height)!
    }
    private var collectionViewHeight:CGFloat{
        return (collectionView?.bounds.height)!
    }


    private var numberOfItems:Int{
        return (collectionView?.numberOfItemsInSection(0))!
    }


    private var dragOffset:CGFloat{
        return (collectionView?.bounds.height)!
    }
    private var currentItemIndex:Int{
        return max(0, Int(collectionView!.contentOffset.y / collectionViewHeight))
    }

    var nextItemBecomeCurrentPercentage:CGFloat{
        return (collectionView!.contentOffset.y / (collectionViewHeight)) - CGFloat(currentItemIndex)
    }

    override func prepareLayout() {
        cache.removeAll(keepCapacity: false)
        yOffset = 0

        for item in 0 ..< numberOfItems{

            let indexPath = NSIndexPath(forItem: item, inSection: 0)
            let attribute = UICollectionViewLayoutAttributes(forCellWithIndexPath: indexPath)
            attribute.zIndex = -indexPath.row

            if (indexPath.item == currentItemIndex+1) && (indexPath.item < numberOfItems){

                attribute.alpha = minAlpha + max((maxAlpha-minAlpha) * nextItemBecomeCurrentPercentage, 0)
                let width = itemWidth - widthOffset + (widthOffset * nextItemBecomeCurrentPercentage)
                let height = itemHeight - heightOffset + (heightOffset * nextItemBecomeCurrentPercentage)

                let deltaWidth =  width/itemWidth
                let deltaHeight = height/itemHeight

                attribute.frame = CGRectMake(0, yOffset, itemWidth, itemHeight)
                attribute.transform = CGAffineTransformMakeScale(deltaWidth, deltaHeight)

                attribute.center.y = (collectionView?.center.y)! +  (collectionView?.contentOffset.y)!
                attribute.center.x = (collectionView?.center.x)! + (collectionView?.contentOffset.x)!
                yOffset += collectionViewHeight

            }else{
                attribute.frame = CGRectMake(0, yOffset, itemWidth, itemHeight)
                attribute.center.y = (collectionView?.center.y)! + yOffset
                attribute.center.x = (collectionView?.center.x)!
                yOffset += collectionViewHeight
            }
            cache.append(attribute)
        }
    }

    //Return the size of ContentView
    override func collectionViewContentSize() -> CGSize {
        contentWidth = (collectionView?.bounds.width)!
        contentHeight = CGFloat(numberOfItems) * (collectionView?.bounds.height)!
        return CGSizeMake(contentWidth, contentHeight)
    }

    //Return Attributes  whose frame lies in the Visible Rect
    override func layoutAttributesForElementsInRect(rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
        var layoutAttributes = [UICollectionViewLayoutAttributes]()
        for attribute in cache{
            if CGRectIntersectsRect(attribute.frame, rect){
                layoutAttributes.append(attribute)
            }
        }
        return layoutAttributes
    }


    override func shouldInvalidateLayoutForBoundsChange(newBounds: CGRect) -> Bool {
        return true
    }

    override func targetContentOffsetForProposedContentOffset(proposedContentOffset: CGPoint, withScrollingVelocity velocity: CGPoint) -> CGPoint {
        let itemIndex = round(proposedContentOffset.y / (dragOffset))
        let yOffset = itemIndex * (collectionView?.bounds.height)!
        return CGPoint(x: 0, y: yOffset)
    }
    override func layoutAttributesForItemAtIndexPath(indexPath: NSIndexPath) -> UICollectionViewLayoutAttributes? {

        // Logic that calculates the UICollectionViewLayoutAttributes of the item
        // and returns the UICollectionViewLayoutAttributes
        return UICollectionViewLayoutAttributes(forCellWithIndexPath: indexPath)
    }

}