快速设置按钮内图像的contentMode

Question

我试图在我的setImage内的UIButton，但图像似乎更小，在按钮内，虽然有“自由空间”，我也设置了contentMode。

Button:

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：

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Answer 1

我解决了这个问题。我只需要把这些加到行里：

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