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Swift 背景色为非';不要在呼叫时更改颜色_Swift_Uicollectionview_Uicollectionviewcell - Fatal编程技术网

Swift 背景色为非';不要在呼叫时更改颜色

Swift 背景色为非';不要在呼叫时更改颜色,swift,uicollectionview,uicollectionviewcell,Swift,Uicollectionview,Uicollectionviewcell,当我的集合视图单元格高亮显示时,我试图更改背景色,但没有发生这种情况。我最近将集合视图从以编程方式创建更改为使用故事板来实现,在这一更改之后,didphighlight函数不会更改背景颜色。它在自身内部打印语句,但不会更改颜色 import UIKit import SnapKit import RxSwift class ChannelViewController: UIViewController { @IBOutlet weak var collectionView:

当我的集合视图单元格高亮显示时,我试图更改背景色,但没有发生这种情况。我最近将集合视图从以编程方式创建更改为使用故事板来实现,在这一更改之后,
didphighlight
函数不会更改背景颜色。它在自身内部打印语句,但不会更改颜色

import UIKit
import SnapKit
import RxSwift


class ChannelViewController: UIViewController {
    
    @IBOutlet weak var collectionView: UICollectionView!
    
    
    var data: [Int] = Array(0..<10)
    
    override func loadView() {
        super.loadView()
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.collectionView.dataSource = self
        self.collectionView.delegate = self
    }
}

extension ChannelViewController: UICollectionViewDataSource {
    
    func collectionView(_ collectionView: UICollectionView,
                                            numberOfItemsInSection section: Int) -> Int {
        return self.data.count
    }
    
    func collectionView(_ collectionView: UICollectionView,
                                            cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: ChannelCell.reuseIdentifier, for: indexPath) as! ChannelCell
        let data = self.data[indexPath.item]
        
        cell.channelName.text = String(data)
        cell.channelImage.image = #imageLiteral(resourceName: "stock1")
        cell.layoutIfNeeded()
        cell.channelImage.layer.cornerRadius = cell.channelImage.frame.height/2
        cell.onlineCount.text = "\(Int.random(in: 1...700)) online"
        return cell
    }
}

extension ChannelViewController: UICollectionViewDelegate {
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        let index = indexPath.item
        print(index)

    }
    
    func collectionView(_ collectionView: UICollectionView, didHighlightItemAt indexPath: IndexPath) {
        let cell = collectionView.cellForItem(at: indexPath)
        cell?.backgroundColor = #colorLiteral(red: 0.8275815845, green: 0.9250754714, blue: 0.999878943, alpha: 1)
        print("Highlighted")
    }
    
    func  collectionView(_ collectionView: UICollectionView, didUnhighlightItemAt indexPath: IndexPath) {
        let cell = collectionView.cellForItem(at: indexPath)
        cell?.backgroundColor = #colorLiteral(red: 0.9591724277, green: 0.9593101144, blue: 0.9591423869, alpha: 1)
    }
}

extension ChannelViewController: UICollectionViewDelegateFlowLayout {

    func collectionView(_ collectionView: UICollectionView,
                                            layout collectionViewLayout: UICollectionViewLayout,
                                            sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width: collectionView.bounds.width, height: 100)
    }

    func collectionView(_ collectionView: UICollectionView,
                                            layout collectionViewLayout: UICollectionViewLayout,
                                            insetForSectionAt section: Int) -> UIEdgeInsets {
        return UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0) //.zero
    }

    func collectionView(_ collectionView: UICollectionView,
                                            layout collectionViewLayout: UICollectionViewLayout,
                                            minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
        return 0
    }

    func collectionView(_ collectionView: UICollectionView,
                                            layout collectionViewLayout: UICollectionViewLayout,
                                            minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        return 0
    }
}
导入UIKit
导入SnapKit
导入RxSwift
类ChannelViewController:UIViewController{
@ibvar collectionView:UICollectionView!
变量数据:[Int]=数组(0..Int{
返回self.data.count
}
func collectionView(collectionView:UICollectionView,
cellForItemAt indexPath:indexPath)->UICollectionViewCell{
让cell=collectionView.dequeueReuseAbleCell(withReuseIdentifier:ChannelCell.reuseIdentifier,for:indexPath)作为!ChannelCell
让data=self.data[indexPath.item]
cell.channelName.text=字符串(数据)
cell.channelImage.image=#imageLiteral(resourceName:“stock1”)
cell.layoutIfNeeded()单元格
cell.channelImage.layer.cornerRadius=cell.channelImage.frame.height/2
cell.onlineCount.text=“\(Int.random(in:1…700))在线”
返回单元
}
}
扩展通道视图控制器:UICollectionViewDelegate{
func collectionView(collectionView:UICollectionView,didSelectItemAt indexPath:indexPath){
让index=indexath.item
打印(索引)
}
func collectionView(collectionView:UICollectionView,didHighlightItemAt indexPath:indexPath){
让cell=collectionView.cellForItem(位于:indexPath)
单元格?.backgroundColor=#colorLiteral(红色:0.8275815845,绿色:0.9250754714,蓝色:0.999878943,alpha:1)
打印(“突出显示”)
}
func collectionView(collectionView:UICollectionView,didUnhighlightItemAt indexPath:indexPath){
让cell=collectionView.cellForItem(位于:indexPath)
单元格?.backgroundColor=#colorLiteral(红色:0.9591724277,绿色:0.9593101144,蓝色:0.9591423869,alpha:1)
}
}
扩展通道视图控制器:UICollectionViewDelegateFlowLayout{
func collectionView(collectionView:UICollectionView,
布局集合视图布局:UICollectionViewLayout,
sizeForItemAt indexPath:indexPath)->CGSize{
返回CGSize(宽度:collectionView.bounds.width,高度:100)
}
func collectionView(collectionView:UICollectionView,
布局集合视图布局:UICollectionViewLayout,
插入部分:Int)->UIEdgeInsets{
返回UIEDGEINSET(顶部:0,左侧:0,底部:0,右侧:0)/.0
}
func collectionView(collectionView:UICollectionView,
布局集合视图布局:UICollectionViewLayout,
截面上的最小最小材料间距:Int)->CGFloat{
返回0
}
func collectionView(collectionView:UICollectionView,
布局集合视图布局:UICollectionViewLayout,
截面的最小线间距:Int)->CGFloat{
返回0
}
}
非常简单的修复,我改变了
cell.backgroundColor=//color
to
cell.contentView.backgroundColor=//color