如何将此导航项标题向左移动?

我有一个当前居中的标题。我的目标是把它移到左边,这样它就位于后箭头右边的右边。

titleView 的 UINavigationBar

代码如下。任何帮助都将不胜感激。

class GroupMessageTitleView: UIControl {

    struct Constants {
        static let imageSize = CGSize(width: 36.0, height: 36.0)
        static let spacingBetweenImageAndText: CGFloat = 8.0
        static let viewHeight: CGFloat = 40.0
    }

    // MARK: - Views

    private let imageView: UIImageView = {
        let frame = CGRect(origin: .zero, size: Constants.imageSize)
        let imageView = UIImageView(frame: frame)
        imageView.layer.cornerRadius = Constants.imageSize.height / 2
        imageView.clipsToBounds = true
        imageView.backgroundColor = UIColor.blue.withAlphaComponent(0.4)
        return imageView
    }()

    private let titleLabel: UILabel = {
        let label = UILabel()
        label.font = Styleguide.Fonts.pingFangMedium.font(ofSize: 16)
        label.backgroundColor = UIColor.red.withAlphaComponent(0.4)
        return label
    }()

    private let subtitleLabel: UILabel = {
        let label = UILabel()
        label.textColor = UIColor.from(rgb: 0xCDCDCD)
        label.font = Styleguide.Fonts.pingFangMedium.font(ofSize: 14)
        label.backgroundColor = UIColor.green.withAlphaComponent(0.4)
        return label
    }()

    private lazy var stackView: UIStackView = {
        let stackView = UIStackView(arrangedSubviews: [titleLabel, subtitleLabel])
        stackView.spacing = -4.0
        stackView.axis = .vertical
        stackView.alignment = .leading
        return stackView
    }()

    private lazy var horizontalStackView: UIStackView = {
        let stackView = UIStackView(arrangedSubviews: [imageView, self.stackView])
        stackView.spacing = Constants.spacingBetweenImageAndText
        stackView.axis = .horizontal
        stackView.alignment = .center
        stackView.translatesAutoresizingMaskIntoConstraints = false
        stackView.isUserInteractionEnabled = false
        return stackView
    }()

    // MARK: - Properties

    weak var delegate: GroupMessageTitleViewDelegate?

    override var isHighlighted: Bool {
        didSet {
            if isHighlighted != oldValue { highlightStateDidChange() }
        }
    }

    // MARK: - Initializers

    override init(frame: CGRect) {

        let initialFrame: CGRect

        if #available(iOS 11.1, *) {
            initialFrame = .zero
        } else {
            // Arbitrary Non Zero Frame. To please the Apple Gods.
            // When the frame is set to .zero on iOS 10,
            // No matter what we do in specfying a size in
            // sizeThatFits or intrinsicContentSize, the frame is not updated
            // Once it's non zero, the frame is then set correctly
            // using sizeThatFits for the size
            initialFrame = CGRect(x: 0, y: 0, width: 0, height: Constants.viewHeight)
        }

        super.init(frame: initialFrame)

        addSubview(horizontalStackView)

        addTarget(self, action: #selector(handleTap), for: .touchUpInside)

        setupConstraints()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    // MARK: - View Configuration

    func configure(with presentable: GroupMessageTitlePresentable) {
        titleLabel.text = presentable.name

        let members = "member".pluralize(withCount: presentable.memberCount).localize()
        subtitleLabel.text = "\(presentable.memberCount) \(members)"

        imageView.setImage(with: presentable.imageUrl, fallbackText: presentable.name, fallbackImageSize: Constants.imageSize.height)
    }

    func highlightStateDidChange() {
        UIView.animate(withDuration: 0.15, delay: 0, options: .beginFromCurrentState, animations: {
            self.alpha = self.isHighlighted ? 0.5 : 1.0
        }, completion: nil)
    }

    // MARK: - Layout

    func setupConstraints() {
        constrain(horizontalStackView) { view in
            // to ensure it is correctly centered, we offset by half the width of the imageView
            let insets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: Constants.imageSize.width / 2)
            view.edges == inset(view.superview!.edges, insets)
        }

        constrain(imageView) { view in
            view.width == Constants.imageSize.width
            view.height == Constants.imageSize.height ~ .required
        }
    }

    // MARK: - Sizing Methods

    override func sizeThatFits(_ size: CGSize) -> CGSize {
        if #available(iOS 11.1, *) {
            return super.sizeThatFits(size)
        } else {
            // Image Width + Spacing + Title Label Width + Trailing inset
            let width = Constants.imageSize.width + Constants.spacingBetweenImageAndText + self.titleLabel.sizeThatFits(size).width + (Constants.imageSize.width / 2)
            return CGSize(width: width, height: Constants.viewHeight)
        }
    }

    // MARK: - Touch Handling

    @objc func handleTap() {
        delegate?.didTap(titleView: self)
    }

}