Photos(PHCollectionListChangeRequest)

最新推荐文章于 2023-04-06 16:59:38 发布

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本文介绍如何使用Photos框架创建、删除及修改相册列表（PHCollectionList）。内容涵盖创建新的PHCollectionList、删除现有列表以及通过多种方法修改列表，如添加、插入、删除和替换子集合等。

Photos(PHAssetChangeRequest)

Photos(PHAssetCreationRequest)

Photos(PHAssetCollectionChangeRequest)

Photos(PHCollectionListChangeRequest)

PHCollectionListChangeRequest可创建、删除和修改PHCollectionList对象。

1 Adding New Collection Lists

/// 创建PHCollectionList
///
/// - parameter title : PHCollectionList名
///
/// - returns: PHCollectionListChangeRequest
public class func creationRequestForAssetCollectionWithTitle(title: String) -> Self

/// 新创建的PHCollectionList
public var placeholderForCreatedAssetCollection: PHObjectPlaceholder { get }

2 Deleting Collection Lists

/// 删除PHCollectionList
///
/// - parameter collectionLists : [PHCollectionList]
///
/// - returns: void
public class func deleteCollectionLists(collectionLists: NSFastEnumeration)

3 Modifying Collection Lists

/// 通过PHCollectionList初始化PHCollectionListChangeRequest
 public convenience init?(forCollectionList collectionList: PHCollectionList)

/// 初始化使用PHFetchResult替换PHCollectionList内部数据
public convenience init?(forCollectionList collectionList: PHCollectionList, childCollections: PHFetchResult)

/// 集合名
public var title: String

// A PHCollection can only belong to a single parent PHCollection
/// 增加[PHCollection]
public func addChildCollections(collections: NSFastEnumeration)
/// 插入[PHCollection]
public func insertChildCollections(collections: NSFastEnumeration, atIndexes indexes: NSIndexSet)
/// 删除[PHCollection]
public func removeChildCollections(collections: NSFastEnumeration)
/// 删除指定位置的[PHCollection]
public func removeChildCollectionsAtIndexes(indexes: NSIndexSet)
/// 替换指定位置的[PHCollection]
public func replaceChildCollectionsAtIndexes(indexes: NSIndexSet, withChildCollections collections: NSFastEnumeration)

/// 移动PHCollectionList内部数据
public func moveChildCollectionsAtIndexes(indexes: NSIndexSet, toIndex: Int)