如何确定UIImage使用的字节数？

let image: UIImage = // 获取UIImage对象
let jpegData = image.jpegData(compressionQuality: 1.0)
let jpegBytes = jpegData?.count
let pngData = image.pngData()
let pngBytes = pngData?.count

print("JPEG 字节数: \(jpegBytes ?? 0)")
print("PNG 字节数: \(pngBytes ?? 0)")

let image: UIImage = // 获取UIImage对象
if let cgImage = image.cgImage, let dataProvider = cgImage.dataProvider, let data = dataProvider.data {
    let bytes = CFDataGetLength(data)
    print("字节数: \(bytes)")
}