在导航栏中快速添加图像

Question

我正在尝试通过以下方式将图像添加到导航栏：

let image = UIImage(named: "my-image")
navigationItem.titleView = UIImageView(image: image)

但没有任何反应，我做错了什么？

Answer 1

    let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 39, height: 39))
    imageView.contentMode = .ScaleAspectFit
    let image = UIImage(named: "newlogo.jpg")
    imageView.image = image
    navigationItem.titleView = imageView