如何在Swift/iOS中仅在UIColorPickerViewController上显示网格标签？

import UIKit

class GridLabelView: UIView, UICollectionViewDataSource, UICollectionViewDelegate {
    
    private let collectionView: UICollectionView
    
    override init(frame: CGRect) {
        let layout = UICollectionViewFlowLayout()
        layout.minimumInteritemSpacing = 10
        layout.minimumLineSpacing = 10
        layout.itemSize = CGSize(width: 50, height: 50)
        
        collectionView = UICollectionView(frame: frame, collectionViewLayout: layout)
        collectionView.backgroundColor = .clear
        collectionView.dataSource = self
        collectionView.delegate = self
        collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "Cell")
        
        super.init(frame: frame)
        
        addSubview(collectionView)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    // MARK: - UICollectionViewDataSource
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 10 // 根据实际需求返回网格的数量
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath)
        cell.backgroundColor = .gray // 设置网格的背景颜色
        
        let label = UILabel(frame: cell.bounds)
        label.text = "Label \(indexPath.item)"
        label.textAlignment = .center
        label.textColor = .white // 设置网格标签的文本颜色
        
        cell.contentView.addSubview(label)
        
        return cell
    }
    
    // MARK: - UICollectionViewDelegate
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        // 处理网格的点击事件
    }
}

// 在UIColorPickerViewController中使用GridLabelView

let colorPicker = UIColorPickerViewController()
let gridLabelView = GridLabelView(frame: CGRect(x: 0, y: 0, width: 300, height: 300))
colorPicker.view.addSubview(gridLabelView)

present(colorPicker, animated: true, completion: nil)