swift - UISplitViewController - 双列样式不起作用

Question

在我的应用程序中，我正在使用这样的 UISplitViewController：

let splitViewController = UISplitViewController()
splitViewController.preferredDisplayMode = .oneBesideSecondary
splitViewController.viewControllers = [
    UINavigationController(rootViewController: CalendarViewController()),
    DetailViewController()
]

结果：

但是当我将样式设置为doubleColumn这样时：

let splitViewController = UISplitViewController(style: .doubleColumn)

结果如下所示：

我不明白为什么现在 CalendarViewController 比主视图更宽。我想使用侧边栏，以便用户可以显示和隐藏日历。

如何修复此显示错误以使 CalendarViewController 具有与主视图相同的宽度？

Answer 1

这是 CalendarKit 库中的一个错误，已在以下提交中修复：Fix Layout Issue when using UISplitViewController

问题出在没有考虑safeArea指南的布局代码中：

      dayHeaderView.frame = CGRect(origin: CGPoint(x: 0, y: layoutMargins.top),
                                   size: CGSize(width: bounds.width, height: headerHeight))
      let timelinePagerHeight = bounds.height - dayHeaderView.frame.maxY
      timelinePagerView.frame = CGRect(origin: CGPoint(x: 0, y: dayHeaderView.frame.maxY),
                                       size: CGSize(width: bounds.width, height: timelinePagerHeight))

切换到 AutoLayout 后，问题就消失了：

      dayHeaderView.translatesAutoresizingMaskIntoConstraints = false
      timelinePagerView.translatesAutoresizingMaskIntoConstraints = false

      dayHeaderView.leadingAnchor.constraint(equalTo: safeAreaLayoutGuide.leadingAnchor).isActive = true
      dayHeaderView.trailingAnchor.constraint(equalTo: safeAreaLayoutGuide.trailingAnchor).isActive = true
      dayHeaderView.topAnchor.constraint(equalTo: safeAreaLayoutGuide.topAnchor).isActive = true
      let heightConstraint = dayHeaderView.heightAnchor.constraint(equalToConstant: headerHeight)
      heightConstraint.priority = .defaultLow
      heightConstraint.isActive = true

      timelinePagerView.leadingAnchor.constraint(equalTo: safeAreaLayoutGuide.leadingAnchor).isActive = true
      timelinePagerView.trailingAnchor.constraint(equalTo: safeAreaLayoutGuide.trailingAnchor).isActive = true
      timelinePagerView.topAnchor.constraint(equalTo: dayHeaderView.bottomAnchor).isActive = true
      timelinePagerView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true