如何在swift中使用NSLayoutConstraint根据屏幕尺寸改变设计

import UIKit

let leadingConstraint = NSLayoutConstraint(item: yourView, attribute: .leading, relatedBy: .equal, toItem: yourSuperview, attribute: .leading, multiplier: 1.0, constant: yourConstant)
let topConstraint = NSLayoutConstraint(item: yourView, attribute: .top, relatedBy: .equal, toItem: yourSuperview, attribute: .top, multiplier: 1.0, constant: yourConstant)
// 添加其他约束...

yourView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([leadingConstraint, topConstraint])

if UIScreen.main.bounds.width <= 320 {
    leadingConstraint.constant = yourUpdatedConstant
    topConstraint.constant = yourUpdatedConstant
    // 更新其他约束的常量值...
} else {
    leadingConstraint.constant = yourDefaultConstant
    topConstraint.constant = yourDefaultConstant
    // 恢复其他约束的常量值...
}