如何将子视图添加到自定义UICollectionViewCell

我有一个自定义的UICollectionViewCell类，我想添加子视图。

我的单元类：SetUpView（）方法将添加我需要的所有子程序。

import Foundation import UIKit class RecipeCell: UICollectionViewCell { var RecipeImg: UIImage! var StarRatingImg: UIImage! var RecipeTitleText = "" var RecipeTextDescription = "" var View: UIView! var ImageContainer: UIImageView! var FavIcon: UIImageView! var StarRatingContainer: UIImageView! var KCAL: UILabel! var RecipeTitle: UITextView! var RecipeText: UITextView! func SetUpView() { //DropDown!.backgroundColor = UIColor.blueColor() self.translatesAutoresizingMaskIntoConstraints = false //View for recipe View = UIView(frame: CGRectMake(0, 0, self.frame.width, self.frame.height)) View.backgroundColor = UIColor.whiteColor() //Recipe image ImageContainer = UIImageView(frame: CGRectMake(0, 0, View.frame.width, View.frame.height/2)) ImageContainer.image = RecipeImg ImageContainer.contentMode = .ScaleToFill //Recipe favorit icon FavIcon = UIImageView(frame: CGRectMake(ImageContainer.frame.width - 35, 5, 30, 30)) FavIcon.image = UIImage(named: "LikeHeart") //Star rating image StarRatingContainer = UIImageView(frame: CGRectMake(10, ImageContainer.frame.height + 5, ImageContainer.frame.width - 20, (View.frame.height/2) * (1/5))) StarRatingContainer.image = StarRatingImg StarRatingContainer.contentMode = .ScaleAspectFit //RecipeTitle container RecipeTitle = UITextView(frame: CGRectMake(10, StarRatingContainer.frame.height + ImageContainer.frame.height + 10, View.frame.width - 20, 30)) RecipeTitle.font = UIFont(name: "OpenSans-Semibold", size: 12) //RecipeTitle.backgroundColor = UIColor.redColor() RecipeTitle.editable = false RecipeTitle.text = RecipeTitleText RecipeTitle.textContainerInset = UIEdgeInsetsMake(0, 0, 0, 0) //RecipeText container RecipeText = UITextView(frame: CGRectMake(10, StarRatingContainer.frame.height + ImageContainer.frame.height + RecipeTitle.frame.height + 15, View.frame.width - 20, 50)) RecipeText.font = UIFont(name: "OpenSans", size: 12) //RecipeText.backgroundColor = UIColor.grayColor() RecipeText.editable = false RecipeText.text = RecipeTextDescription RecipeText.textContainerInset = UIEdgeInsetsMake(0, 0, 0, 0) //KCAL label KCAL = UILabel(frame: CGRectMake(15, StarRatingContainer.frame.height + ImageContainer.frame.height + RecipeTitle.frame.height + RecipeText.frame.height + 20, 200, 20)) KCAL.text = "420 KCAL. PER. PORTION" KCAL.font = UIFont(name: "OpenSans-Bold", size: 10) KCAL.textColor = UIColor(CGColor: "#dc994a".CGColor) //Adding the views self.addSubview(View) View.addSubview(ImageContainer) View.addSubview(KCAL) View.addSubview(StarRatingContainer) View.addSubview(RecipeTitle) View.addSubview(RecipeText) ImageContainer.addSubview(FavIcon) View.bringSubviewToFront(ImageContainer) } } 

我有一个使用自定义单元类的UICollectionView。

我在viewDidLoad（）中创建我的UICollectionView

 // Create Collection view layout = UICollectionViewFlowLayout() layout.sectionInset = UIEdgeInsets(top: 0, left: 0, bottom: 10, right: 0) layout.itemSize = CGSize(width: screenWidth/MenuViewConst - 1, height: screenWidth - 1) layout.minimumInteritemSpacing = 1 layout.minimumLineSpacing = 1 collectionView = UICollectionView(frame: CGRect(x: 0, y: 105, width: self.view.frame.width, height: self.view.frame.height - 150), collectionViewLayout: layout) collectionView?.tag = 5 collectionView!.dataSource = self collectionView!.delegate = self collectionView!.registerClass(RecipeCell.self, forCellWithReuseIdentifier: "CollectionViewCell") collectionView!.backgroundColor = UIColor.lightGrayColor() collectionView!.contentInset.top = 0 

在cellForItemAtIndexPath委托中，我设置UICollectionView以使用我的自定义单元类。 但我无法在此处调用自定义单元格类中的SetUpView（）方法，因为这将继续在子视图上添加子视图。 在进入委托之前，我无法弄清楚如何将子视图添加到UICollectionViewCell。 希望你们能帮忙 – 谢谢

 func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCellWithReuseIdentifier("CollectionViewCell", forIndexPath: indexPath) as! RecipeCell let recipe = self.RecipeArr[indexPath.row] cell.backgroundColor = UIColor.grayColor() cell.layer.borderColor = UIColor.whiteColor().CGColor cell.layer.borderWidth = 0.5 cell.RecipeImg = UIImage(named: "Burger") cell.StarRatingImg = UIImage(named: "StarRating") cell.RecipeTitleText = recipe["name"].string! cell.RecipeTextDescription = recipe["instruction"].string! //BAD IDEA! //cell.SetUpView() print("new cell") return cell } 

Answer 1

您需要在init(frame: CGRect)使用init(frame: CGRect)inheritance的函数。

 class RecipeCell: UICollectionViewCell { var imageView : UIImageView? override init(frame: CGRect) { super.init(frame: frame) //initialize all your subviews. imageView = UIImageView() } } 

也不要忘记在viewDidLoad函数中注册自定义类

 collectionView!.registerClass(RecipeCell.self, forCellWithReuseIdentifier: "CollectionViewCell") 

你的collectionview代表就是这样的

 func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCellWithReuseIdentifier("CollectionViewCell", forIndexPath: indexPath) as! RecipeCell cell.imageView.image = UIImage(named:"yourImage.png") }