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我正在尝试对齐单元格的组件，但它不能正常工作。我相信，我只是不明白 ASLayoutSpec 背后的一些简单想法，所以我很感激这里的任何帮助。

我有一个单元格（当然是 ASCellNode），它由 ASTextNode ( asTextLabel)、ASDisplayNode ( asBackView，它只是带有圆角的 textLabel 的背景) 和 asImageNode ( asSoundIcon) 组成。

asBackView应该比asTextLabel（它有效）高一点和宽一点，并且asSoundIcon应该在右侧asBackView（例如，右侧asBackView和左侧之间的 4 个点asSoundIcon），并且它应该垂直居中。

我所拥有的asSoundIcon是不是垂直居中的，而且它离我想要的更远。

我尝试了很多选项，这只是其中之一，我不明白为什么我的水平间距不起作用，以及如何垂直对齐asSoundIcon。

对不起颜色

override func layoutSpecThatFits(_ constrainedSize: ASSizeRange) -> ASLayoutSpec {

    asSoundIcon.style.preferredSize = CGSize(width: 16, height: 16)
    asSoundIcon.style.maxSize = CGSize(width: 16, height: 16)
    asSoundIcon.style.minSize = CGSize(width: 16, height: 16)
    asBackView.style.minSize = CGSize(width: 30, height: 48)
    asTextLabel.style.minSize = CGSize(width: 30, height: 15)
    asTextLabel.style.maxWidth = ASDimension(unit: .points, value: screenWidth - 50)

    let asBackViewLayout = ASInsetLayoutSpec(insets: UIEdgeInsets(top: 4, left: 4, bottom: 4, right: 24), child: self.asBackView)

    let asTextLabelLayout = ASInsetLayoutSpec(insets: UIEdgeInsets(top: 6, left: 12, bottom: 6, right: 36), child: asTextLabel)

    let asNewCenterTextLabelLayout = ASCenterLayoutSpec(horizontalPosition: .start, verticalPosition: .center, sizingOption: .minimumWidth, child: asTextLabelLayout)

    let asOverlayLayout = ASOverlayLayoutSpec(child: asNewCenterTextLabelLayout, overlay: asBackViewLayout)

    let asSoundVerticalLayout = ASRelativeLayoutSpec(horizontalPosition: .start, verticalPosition: .center, sizingOption: .minimumSize, child: asSoundIcon)

    let asSoundLayout = ASStackLayoutSpec(direction: .horizontal, spacing: 0.0, justifyContent: .start, alignItems: .start, flexWrap: .noWrap, alignContent: .start, lineSpacing: 0.0, children: [asOverlayLayout, asSoundVerticalLayout])

    return asSoundLayout
}
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1 回答 1

1

尝试删除线

let asSoundVerticalLayout = ASRelativeLayoutSpec(horizontalPosition: .start, verticalPosition: .center, sizingOption: .minimumSize, child: asSoundIcon)

并将下一行更改为：

let asSoundLayout = ASStackLayoutSpec(direction: .horizontal, spacing: 0.0, justifyContent: .start, alignItems: .center, flexWrap: .noWrap, alignContent: .start, lineSpacing: 0.0, children: [asOverlayLayout, asSoundIcon])

UPD

我尝试做一个简单的项目

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    viewNode.automaticallyManagesSubnodes = true
    viewNode.backgroundColor = UIColor.blue

    let asBackView = ASDisplayNode()
    asBackView.backgroundColor = UIColor.gray
    let asTextLabel = ASTextNode()
    asTextLabel.attributedText = NSAttributedString.init(string: "Cum contencio studere, omnes lunaes perdere audax, velox animalises.", attributes: [NSAttributedStringKey.foregroundColor: UIColor.blue, NSAttributedStringKey.font: UIFont.systemFont(ofSize: 15)])
    asBackView.automaticallyManagesSubnodes = true
    asBackView.style.flexGrow = 1
    asBackView.style.flexShrink = 1
    asBackView.layoutSpecBlock = { asDisplayNode, asSizeRange in
        let asInsetSpec = ASInsetLayoutSpec(insets: UIEdgeInsetsMake(6, 12, 6, 36), child: asTextLabel)
        return asInsetSpec
    }

    let asSoundIcon = ASNetworkImageNode(cache: ASPINRemoteImageDownloader.shared(), downloader: ASPINRemoteImageDownloader.shared())
    asSoundIcon.setURL(URL.init(string: "https://www.shareicon.net/data/2017/02/09/878596_music_512x512.png"), resetToDefault: false)
    asSoundIcon.style.preferredSize = CGSize(width: 50,height: 50)
    viewNode.layoutSpecBlock = { node, constrainedSize in
        let asSoundInsetsSpec = ASInsetLayoutSpec(insets: UIEdgeInsetsMake(5, 5, 5, 5), child: asSoundIcon)
        let asStackLayout = ASStackLayoutSpec(direction: .horizontal, spacing: 0, justifyContent: .start, alignItems: .center, children: [asBackView, asSoundInsetsSpec])
        return asStackLayout
    }
}

PSlayoutSpecBlock在 Texture > v. 2.3.4 上损坏

于 2018-05-31T13:52:17.997 回答