ios - 如何在 CollectionView 的 Cell 中更改 imageView(SubView) 的大小

Question

我对单元格中的图像有疑问。更准确地说， Assets 中的图像大于单元格。我如何将图像转换为更小的尺寸？

` var 照片 = ["IMG_3814","IMG_3803"]

override func viewDidLoad() {
    super.viewDidLoad()


    // Do any additional setup after loading the view.
}

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return photos.count
}


func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellID", for: indexPath)
    let img = photos[indexPath.row]
    let imageView: UIImageView = UIImageView(image: UIImage(named: img))


    cell.contentView.addSubview(imageView)

    return cell
}`

Answer 1

尝试使用

let imageView: UIImageView = UIImageView(image: UIImage(named: img))
imageView.frame = cell.contentView.frame
imageView.contentMode = .scaleAspectFit

它会将您的图像调整为 imageView