ios - UICollectionViewCell 中缺少编辑属性和 setEditing:animated:

Question

不太可能 UITableViewCell、UICollectionViewCell 缺少setEditing:animated:和editing属性。

这是设计使然吗？Apple 是否强制执行其他最佳实践来处理 UICollectionView 及其单元格中的编辑？

Answer 1

也许这就是你需要的：

子类 UICollectionViewController 像ABCCollectionViewController：

let vc = UINavigationController(rootViewController: ABCCollectionViewController())

然后viewDidLoad在ABCCollectionViewController：

self.navigationItem.leftBarButtonItem = self.editButtonItem

然后重写 setEditting 方法：

override func setEditing(_ editing: Bool, animated: Bool) {
    super.setEditing(editing, animated: true)

    // Use these methods to do the edit things, without test but should works
    collectionView?.beginInteractiveMovementForItem(at: indexPath)
    print("editting")//Do some edit thing
    collectionView?.endInteractiveMovement()  
    collectionView.updateInteractiveMovementTargetPosition()
    collectionView?.cancelInteractiveMovement()
}

然后你可以调用：

setEditing(true, animated: true)

Answer 2

allowsMultipleSelection如果您在编辑时更改某些状态UICollectionView：

override func setEditing(_ editing: Bool, animated: Bool) {
    super.setEditing(editing, animated: animated)
    collectionView.allowsMultipleSelection = editing
}

您可以简单地将其添加到您的UICollectionViewCell子类中：

var isEditing: Bool {
    return (superview as! UICollectionView).allowsMultipleSelection
}