我可能知道有什么方法可以在具有2个不同UIcollectionflow布局的1个UIviewcontroller中实现2个UIcollectionview。
主要问题是一个UIcollectionview符合iOS UIcollectionviewflowlayout，另一个符合Waterfalllayout。因为我现在面临的问题是我不能在一个UIviewcontroller中同时拥有两个委托函数。谢谢大家
func collectionView(_ collectionView: UICollectionView, layout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
}
func collectionView(_ collectionView: UICollectionView, layout: WaterfallLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
}
最佳答案
//: Playground - noun: a place where people can play
import UIKit
class Controller: UIViewController, UICollectionViewDelegateFlowLayout, WaterfallLayoutDelegate {
let collectionView = UICollectionView(frame: CGRect.zero)
let waterfallCollectionView = UICollectionView(frame: CGRect.zero)
override func viewDidLoad() {
collectionView.delegate = self
collectionView.collectionViewLayout = UICollectionViewFlowLayout()
waterfallCollectionView.delegate = self
let waterfallLayout = WaterfallLayout()
waterfallLayout.delegate = self
waterfallCollectionView.collectionViewLayout = waterfallLayout
}
//MARK: - WaterfallLayoutDelegate
func collectionView(_ collectionView: UICollectionView, layout: WaterfallLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
return CGSize.zero
}
//MARK: - UICollectionViewDelegateFlowLayout
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
return CGSize.zero
}
}
//MARK: - Just for test
protocol WaterfallLayoutDelegate: class {
func collectionView(_ collectionView: UICollectionView, layout: WaterfallLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
}
class WaterfallLayout: UICollectionViewLayout {
weak var delegate: WaterfallLayoutDelegate?
}
一切正常。
关于ios - 1个UIviewController中有2个UIcollectionview，具有2个不同的UIcollectionflowlayout？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51286616/