iOS15下一行代码集成跨应用间拖拽传递数据(A Simple way help you drop or drag your source (like UIImage) between different App In iOS15+ Or iPad OS 11+.)
pod 'DragAndDropKit', '0.2.0'最快只需两行代码即可实现拖拽,支持链式写法
/*
你想拖拽时候给予的souce, 目前支持NetworkImageDropSource、NetworkVideoDropSource、ImageDropSource、VideoDropSource、TextDropSource五种
*/
self.networkImageView.drag.dropSource = NetworkImageDropSource(imageUrl: "http://image.jerryfans.com/sample.jpg")
//开启拖拽
self.networkImageView.drag.enabled()
以及可选协议转链式闭包
self.networkImageView.drag.enabled().didEndSession { interaction, session, operation in
}.didMoveSession { interaction, session in
}.didPreviewForDragSession { interaction, item, session in
return
}.didAllowsMoveOperationSession { interaction, session in
return false
}
UICollectionView、UITableView因为实习的协议不同，但本质写法是差不多的。 两者enabled后都必须至少实现tableViewDidItemsForBeginning 或 collectionViewDidItemsForBeginning 闭包，返回相应的DragItem。DragItem封装的也是上面所说的5种DropSource。
tableView
tableView.drag.enabled().tableViewDidItemsForBeginning { [weak self] tableView, session, indexPath in
guard let self = self else { return [] }
//if you are the custom model, you should convert to DropSource Object (Text,Image or Video Drop Source)
let source = self.models[indexPath.row]
let itemProvider = NSItemProvider(object: source)
return [
UIDragItem(itemProvider: itemProvider)
]
}
collectionView,如果要实现一些生命周期方法，可以实现一下生命周期闭包，同样是链式语法。
collectionView.drag.enabled()
.collectionViewDidItemsForBeginning { [weak self] collectionView, session, indexPath in
return self?.dragAndDropVM.dragItems(for: indexPath) ?? []
}.collectionViewWillBeginDragSession { collectionView, session in
JFPopup.toast(hit: "collection view will begin drag")
}.collectionViewDidEndDragSession { collectionView, session in
JFPopup.toast(hit: "collection view did end drag")
}
从其他应用的接收data到到本应用（亲测支持系统相册、备忘录、QQ发送聊天等） DragAndDropKit本组件目前支持Drop 接收 UIImage、本地视频（路径下的视频）、网络图片、网络视频、文本等。目前也是支持UIView及其类UIImageView、UILabel等、以及TableView、CollectionView快速拖动其子Cell。
支持类型参数，所有UIView类别、TableView、CollectionView、均可赋值supportSources，用来声明drop接收时候能支持的类型数据，默认全部支持(Image、Video、Text)三种。（注：并不是系统api只支持这三种，是这三种比较广泛，第一期先支持此三种数据的接收）
c.drop.supportSources = [.rawImage,.rawVideo,.text]
UIView Drop, didReceivedDropSource闭包必须实现用以接收到source后你对source的处理，其他可选。
self.view.drop.supportSources = [.rawImage]
self.view.drop.enabled().didReceivedDropSource { [weak self] dropSources in
for (_, item) in dropSources.enumerated() {
if let imageSource = item as? ImageDropSource {
self?.imageView.image = imageSource.image
self?.imageView.layer.borderWidth = 0.0
break
}
}
}.didEnterDropSession { interaction, session in
if session.localDragSession == nil {
JFPopupView.popup.toast {
[.hit("请移入右上角图片中替换"),
.withoutAnimation(true),
.position(.top),
.autoDismissDuration(.seconds(value: 3)),
.bgColor(UIColor.jf.rgb(0x000000, alpha: 0.3))
]
}
}
}.didUpdateDropSource { [weak self] interaction, session in
guard let self = self else {
return UIDropProposal(operation: UIDropOperation.cancel)
}
let dropLocation = session.location(in: self.view)
let operation: UIDropOperation
if self.imageView.frame.contains(dropLocation) {
operation = session.localDragSession == nil ? .copy : .move
self.checkIsMatch(match: true)
} else {
operation = .cancel
self.checkIsMatch(match: false)
}
self.updateLayers(forDropLocation: dropLocation)
return UIDropProposal(operation: operation)
}.didEndDropSession { [weak self] interaction, session in
guard let self = self else { return }
let dropLocation = session.location(in: self.view)
self.updateLayers(forDropLocation: dropLocation)
self.checkIsMatch(match: false)
}.didExitDropSession { [weak self] interaction, session in
guard let self = self else { return }
self.imageView.layer.borderWidth = 0.0
}
}
UICollectionView类似,也是collectionViewDidReceivedDropSource必须处理，其他生命周期闭包，可选。
c.drop.supportSources = [.rawImage,.rawVideo,.text]
c.drop.enabled().collectionViewDidReceivedDropSource { [weak self] collectionView, coordinator, dropSources in
let destinationIndexPath: IndexPath
if let indexPath = coordinator.destinationIndexPath {
destinationIndexPath = indexPath
} else {
let item = collectionView.numberOfItems(inSection: 0)
destinationIndexPath = IndexPath(item: item, section: 0)
}
var indexPaths = [IndexPath]()
for (index, item) in dropSources.enumerated() {
let indexPath = IndexPath(item: destinationIndexPath.item + index, section: destinationIndexPath.section)
self?.dragAndDropVM.addItem(item, at: indexPath.item)
indexPaths.append(indexPath)
}
self?.collectionView.insertItems(at: indexPaths)
}
UITableView类似,也是tableViewDidReceivedDropSource必须处理，其他生命周期闭包，可选。
t.drop.supportSources = [.rawImage,.rawVideo,.text]
t.drop.enabled().tableViewDidReceivedDropSource { [weak self] tableView, coordinator, dropSources in
guard let self = self else { return }
let destinationIndexPath: IndexPath
if let indexPath = coordinator.destinationIndexPath {
destinationIndexPath = indexPath
} else {
let item = tableView.numberOfRows(inSection: 0)
destinationIndexPath = IndexPath(row: item, section: 0)
}
var indexPaths = [IndexPath]()
for (index, item) in dropSources.enumerated() {
let indexPath = IndexPath(row: destinationIndexPath.item + index, section: destinationIndexPath.section)
self.models.insert(item, at: indexPath.row)
indexPaths.append(indexPath)
}
tableView.insertRows(at: indexPaths, with: .bottom)
}
效果：
拖拽本应用的data到其他实现了Drop协议的应用（亲测支持系统相册、备忘录、网页里面的文本选中范围后直接拖拽等） DragAndDropKit本组件目前支持拖拽UIImage、本地视频（路径下的视频）、网络图片、网络视频、文本等。目前支持UIView及其类UIImageView、UILabel等、以及TableView、CollectionView快速拖动其子Cell。
fanjiaorng919, [email protected]
DragAndDropKit is available under the MIT license. See the LICENSE file for more info.
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