如何根据片段宽度调整UISegmentedControl字体大小？

let segmentedControl = UISegmentedControl(items: ["Segment 1", "Segment 2", "Segment 3", "Segment 4"])
segmentedControl.frame = CGRect(x: 50, y: 100, width: 300, height: 30)
segmentedControl.selectedSegmentIndex = 0

// 创建一个临时的UISegmentedControl
let tempSegmentedControl = UISegmentedControl(items: ["Segment 1", "Segment 2", "Segment 3", "Segment 4"])

// 设置默认字体大小
let defaultFont = tempSegmentedControl.titleTextAttributes(for: .normal)?[NSAttributedString.Key.font] as? UIFont ?? UIFont.systemFont(ofSize: 17)

// 获取每个片段的宽度
var totalWidth: CGFloat = 0
for i in 0..<segmentedControl.numberOfSegments {
    let title = segmentedControl.titleForSegment(at: i)
    let size = (title as NSString?)?.size(withAttributes: [NSAttributedString.Key.font: defaultFont]) ?? CGSize.zero
    totalWidth += size.width
}

// 计算平均片段宽度
let averageWidth = totalWidth / CGFloat(segmentedControl.numberOfSegments)

// 根据平均片段宽度计算出合适的字体大小
let maxFontSize: CGFloat = 17 // 最大字体大小
let minFontSize: CGFloat = 10 // 最小字体大小
let maxWidth: CGFloat = 300 // 最大宽度限制
var fontSize = defaultFont.pointSize
if averageWidth > 0 && averageWidth < maxWidth {
    fontSize = min(maxFontSize, max(minFontSize, (maxFontSize * averageWidth) / maxWidth))
}

// 设置新的字体大小
let newFont = defaultFont.withSize(fontSize)
segmentedControl.setTitleTextAttributes([NSAttributedString.Key.font: newFont], for: .normal)

// 将UISegmentedControl自适应到合适的大小
segmentedControl.sizeToFit()