ios - Swift - CollectionViewCell 边框错误或不完整

Question

我有一个看起来很奇怪的collectionViewCell。左右垂直边框不见了，我不知道我错过了什么。你们能帮我吗？谢谢!

 public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! profileServicesCell

    // Card border
    cell.backgroundColor = UIColor.white
    cell.layer.borderWidth = 1.0
    cell.layer.borderColor = UIColor.lightGray.cgColor

    // Cell Content
    cell.profileServiceName.text = profileServicesName[indexPath.row]
    cell.profileServiceIcon.image = UIImage(named: profileServicesIcon[indexPath.row])

    return cell
}

附图供引用:

Storyboard图像

模拟器/运行时

Answer 1

可能是您没有为单元格指定任何大小的问题，请尝试一下:

extension Your_Class :  UICollectionViewDelegateFlowLayout {

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    let width = self.view.frame.width * 0.4  // or whatever width you like 
    let height = width / 2 // or whatever height you like 
    return CGSize(width: width, height: height)
  }

   }