在自定义表格视图单元格中设置UIButton的高度

import UIKit

class CustomTableViewCell: UITableViewCell {
    var button: UIButton!

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        
        // 初始化UIButton
        button = UIButton(type: .system)
        button.translatesAutoresizingMaskIntoConstraints = false
        contentView.addSubview(button)
        
        // 设置UIButton的布局约束
        NSLayoutConstraint.activate([
            button.leadingAnchor.constraint(equalTo: contentView.leadingAnchor, constant: 16),
            button.trailingAnchor.constraint(equalTo: contentView.trailingAnchor, constant: -16),
            button.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 8),
            button.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -8)
        ])
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        // 设置UIButton的高度
        button.frame.size.height = contentView.frame.size.height - 16
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}