活跃背景下的Label和NSView

Question

我已经创建了一个具有充满活力的背景(半透明背景)的窗口。

override func viewWillAppear() {
super.viewWillAppear()

  let visualEffect = NSVisualEffectView()
  visualEffect.blendingMode = .behindWindow
  visualEffect.state = .active
  visualEffect.material = .light
  view.window?.contentView = visualEffect
}

当我添加那个鲜艳的背景时，标签的文本就消失了。

如何将标签和NSView放在一个充满活力的背景中？

(为了测试它，我创建了一个没有背景的标签和文本: label1，只有我在这里给出的充满活力的背景的代码。当我添加振动代码时，标签的文本将消失。)

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Answer 1

// That is what I already had in my question:
let visualEffect = NSVisualEffectView()
visualEffect.blendingMode = NSVisualEffectView.BlendingMode.behindWindow
visualEffect.material = NSVisualEffectView.Material.light

// That is the key to solve the problem:
view.addSubview(visualEffect, positioned: .below, relativeTo: label1) 

// Constraints. They are also necessary:
visualEffect.translatesAutoresizingMaskIntoConstraints = false
visualEffect.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
visualEffect.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
visualEffect.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
visualEffect.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true