swift 监听状态栏frame变化

针对状态栏高度做一些操作

import UIKit

class ViewController: UIViewController {

    private var statusBarFrameObservation: NSKeyValueObservation?

    override func viewDidLoad() {
        super.viewDidLoad()
        
        if let statusBarManager = UIApplication.shared.windows.first?.windowScene?.statusBarManager {
            statusBarFrameObservation = statusBarManager.observe(\.statusBarFrame, options: [.new, .old]) { _, change in
                // 处理状态栏变化
                print("Status bar frame changed from \(change.oldValue) to \(change.newValue)")
            }
        }
    }
}