UIPicker在横向模式下调整大小

// 设置 UIPicker 的约束
let constraints = [
    picker.leadingAnchor.constraint(equalTo: view.leadingAnchor),
    picker.trailingAnchor.constraint(equalTo: view.trailingAnchor),
    picker.topAnchor.constraint(equalTo: view.topAnchor),
    picker.bottomAnchor.constraint(equalTo: view.bottomAnchor)
]
NSLayoutConstraint.activate(constraints)

// 调整 UIPicker 的大小
let newWidth = 300
let newHeight = 100
let newSize = CGSize(width: newWidth, height: newHeight)
picker.frame.size = newSize

// 调整其他元素的大小和位置
// ...