[翻译] RAReorderableLayout

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RAReorderableLayout

A UICollectionView layout which you can move items with drag and drop.

一种UICollectionView的布局,允许你进行移动和拖拽cell.

Installation - 安装

Simply copy RAReorderableLayout.swift into your project.
Cocoapods has not yet supported swift :(

你只需要简单的将RAReorderableLayout.swift导到你的工程当中.

Cocoapods现在还不支持swift :(

Usage - 使用

Setup your collection view to use RAReorderableLayout.

设置好你的collection view,然后你就可以使用RAReorderableLayout.

You must reorder cells information array in RAReorderableLayoutDelegate protocol to support reordering capability.
Specifically, please refer to Demo-project.

你必须重新对你的cell的数据源进行重新排序,请在RAReorderableLayoutDelegate协议中做这件事情,你可以参考Demo来看看怎么使用的.

Protocol - 协议

Delegate

optional func collectionView(collectionView: UICollectionView, atIndexPath: NSIndexPath, willMoveToIndexPath toIndexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, atIndexPath: NSIndexPath, didMoveToIndexPath toIndexPath: NSIndexPath)

optional func collectionView(collectionView: UICollectionView, allowMoveAtIndexPath indexPath: NSIndexPath) -> Bool
optional func collectionView(collectionView: UICollectionView, atIndexPath: NSIndexPath, canMoveToIndexPath: NSIndexPath) -> Bool

optional func collectionView(collectionView: UICollectionView, collectionViewLayout layout: RAReorderableLayout, willBeginDraggingItemAtIndexPath indexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, collectionViewLayout layout: RAReorderableLayout, didBeginDraggingItemAtIndexPath indexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, collectionViewLayout layout: RAReorderableLayout, willEndDraggingItemToIndexPath indexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, collectionViewLayout layout: RAReorderableLayout, didEndDraggingItemToIndexPath indexPath: NSIndexPath)

Datasource

optional func collectionView(collectionView: UICollectionView, reorderingItemAlphaInSection section: Int) -> CGFloat
optional func scrollTrigerEdgeInsetsInCollectionView(collectionView: UICollectionView) -> UIEdgeInsets
optional func scrollTrigerPaddingInCollectionView(collectionView: UICollectionView) -> UIEdgeInsets
optional func scrollSpeedValueInCollectionView(collectionView: UICollectionView) -> CGFloat

Property - 属性

var trigerInsets: UIEdgeInsets = UIEdgeInsetsMake(100.0, 100.0, 100.0, 100.0)
var trigerPadding: UIEdgeInsets = UIEdgeInsetsZero
var scrollSpeedValue: CGFloat = 10.0

License - 版权

RAReorderableLayout is available under the MIT license. See the LICENSE file for more info.

[翻译] RAReorderableLayout

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原文地址：http://www.cnblogs.com/YouXianMing/p/4238012.html