为Swift中的Button内部图像设置contentMode

Question

我正在尝试将setImage放入UIButton，但尽管有“自由空间”，但按钮内的图像显得较小，我也设置了contentMode。

按钮：

let noteButton: UIButton = {
    let v = UIButton()
    v.setImage(UIImage(systemName: "pencil"), for: .normal)
    v.tintColor = UIColor.white
    v.imageView?.contentMode = .scaleAspectFit
    v.translatesAutoresizingMaskIntoConstraints = false
    return v
}()

约束：

noteButton.heightAnchor.constraint(equalToConstant: 30).isActive = true
    noteButton.widthAnchor.constraint(equalToConstant: 30).isActive = true
    noteButton.centerYAnchor.constraint(equalTo: itemView.centerYAnchor).isActive = true
    noteButton.leadingAnchor.constraint(equalTo: linkButton.leadingAnchor, constant: 50).isActive = true

结果：

Answer 1

我已解决此问题。我只需要将这些添加到行中即可：

v.contentHorizontalAlignment = .fill
v.contentVerticalAlignment = .fill