UICollectionView:删除单元格之间的空格(每行7个项目)

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    return 0  // 设置行之间的最小间距为0
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
    return 0  // 设置列之间的最小间距为0
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    let screenWidth = UIScreen.main.bounds.width  // 获取屏幕宽度
    let itemWidth = screenWidth / 7  // 计算每个项目的宽度
    return CGSize(width: itemWidth, height: itemWidth)  // 返回每个项目的大小
}

let layout = UICollectionViewFlowLayout()
let collectionView = UICollectionView(frame: CGRect(x: 0, y: 0, width: screenWidth, height: screenHeight), collectionViewLayout: layout)
collectionView.delegate = self