uicollectionview

来源： https://stackoverflow.com/questions/13554203/how-to-find-a-uicollectionviewcells-coordinates-relative-to-the-app-window

来源： https://stackoverflow.com/questions/13554203/how-to-find-a-uicollectionviewcells-coordinates-relative-to-the-app-window

来源： https://stackoverflow.com/questions/13554203/how-to-find-a-uicollectionviewcells-coordinates-relative-to-the-app-window

问题 I am trying to delete a single element of the coreData set using a button inside a collectionviewcell. So the cell has a label with the result of the core data fetch. When I hit the button it should delete the cell making it no longer appear. Also the the core data single set item should be perementley deleted. I have scence this used before in protocols but not using core data.The core data is var itemName. class CustomCell: UICollectionViewCell { @objc func delete() { }} class

问题 I am trying to delete a single element of the coreData set using a button inside a collectionviewcell. So the cell has a label with the result of the core data fetch. When I hit the button it should delete the cell making it no longer appear. Also the the core data single set item should be perementley deleted. I have scence this used before in protocols but not using core data.The core data is var itemName. class CustomCell: UICollectionViewCell { @objc func delete() { }} class

问题 I am trying to delete a single element of the coreData set using a button inside a collectionviewcell. So the cell has a label with the result of the core data fetch. When I hit the button it should delete the cell making it no longer appear. Also the the core data single set item should be perementley deleted. I have scence this used before in protocols but not using core data.The core data is var itemName. class CustomCell: UICollectionViewCell { @objc func delete() { }} class

问题 I want to create a UICollectionView that has different item size. It is similar to this image. It is a Vertical UICollectionView. class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() self.view.backgroundColor = .white let layout = UICollectionViewFlowLayout() layout.scrollDirection = .vertical let collectionView = CollectionView(frame: .zero, collectionViewLayout: layout) view.addSubview(collectionView) collectionView.leadingAnchor.constraint(equalTo:

问题 I want to create a UICollectionView that has different item size. It is similar to this image. It is a Vertical UICollectionView. class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() self.view.backgroundColor = .white let layout = UICollectionViewFlowLayout() layout.scrollDirection = .vertical let collectionView = CollectionView(frame: .zero, collectionViewLayout: layout) view.addSubview(collectionView) collectionView.leadingAnchor.constraint(equalTo:

问题 I m working on a UICollectionView class, and it will display the scroll bar when I scroll on the list, it's possible to hide scroll bar when scrolling? 回答1: Objective C: [collectionView setShowsHorizontalScrollIndicator:NO]; [collectionView setShowsVerticalScrollIndicator:NO]; Swift 3.0 colView.showsHorizontalScrollIndicator = false colView.showsVerticalScrollIndicator = false From storyboard: 回答2: in Swift: collectionView.showsHorizontalScrollIndicator = false in Interface Builder: 来源： https

问题 I m working on a UICollectionView class, and it will display the scroll bar when I scroll on the list, it's possible to hide scroll bar when scrolling? 回答1: Objective C: [collectionView setShowsHorizontalScrollIndicator:NO]; [collectionView setShowsVerticalScrollIndicator:NO]; Swift 3.0 colView.showsHorizontalScrollIndicator = false colView.showsVerticalScrollIndicator = false From storyboard: 回答2: in Swift: collectionView.showsHorizontalScrollIndicator = false in Interface Builder: 来源： https