ios - 无法单击 UIScrollView 内的组件

Question

我正在尝试以编程方式使用 ScrollView 创建 View ，因为我需要一些 Storyboard 不允许我做的更复杂的处理。

问题在于 ScrollView 中插入的组件不捕获点击。已经在物理设备和模拟器上进行了测试。

UIScrollView 未全屏。有一个带有固定在底部的按钮的 View 。

注意:我使用 PureLayout 设置约束图书馆。如果Apple约束库更好的话我可以改用它。

这是我的观点:

import UIKit
import PureLayout

class DetalheProduto: UIView {
var shouldSetupConstraints = true

let screenSize = UIScreen.main.bounds

var scrollView: UIScrollView!
var viewFundo: UIView!

var bannerView: UIImageView!
var viewPreco: UIView!
var preco: UILabel!

var fundo: UIView!

var nomeProduto: UILabel!
var divisor : UIView!

var lblQuantidade: UILabel!
var stepperQuantidade: UIStepperCustom!


var viewAvancar: UIView!
var divisor2: UIView!
var lblTotal: UILabel!
var total: UILabel!
var btnAvancar: UIButton!


override init(frame: CGRect) {
    super.init(frame: frame)

    self.backgroundColor = UIColor.white

    scrollView = UIScrollView(frame: .zero)

    self.addSubview(scrollView)

    viewFundo = UIView(frame:  .zero)

    self.scrollView.addSubview(viewFundo)

    bannerView = UIImageView(frame: .zero)
    bannerView.autoSetDimension(.height, toSize: screenSize.width / 2)
    bannerView.autoSetDimension(.width, toSize: screenSize.width)
    bannerView.contentMode = .scaleAspectFit

    self.viewFundo.addSubview(bannerView)

    viewPreco = UIView(frame: .zero)
    viewPreco.backgroundColor = UIColor(codHex: 0x6BC43C)
    viewPreco.addShadow(offset: CGSize(width: 1, height: 1), radius: 2.0, color: UIColor.black, opacity: 0.5)

    self.viewFundo.addSubview(viewPreco)

    preco = UILabel(frame: .zero)
    preco.text = "R$ 0,00"
    preco.textAlignment = .center
    preco.textColor = UIColor.white
    preco.font = UIFont.systemFont(ofSize: 16.0)

    viewPreco.addSubview(preco)

    fundo = UIView(frame: CGRect.zero)
    fundo.backgroundColor = UIColor.purple
    fundo.autoSetDimension(.width, toSize: screenSize.width)

    self.viewFundo.addSubview(fundo)

    ///

    nomeProduto = UILabel(frame: .zero)
    nomeProduto.autoSetDimension(.height, toSize: 32.0)
    nomeProduto.text = "Nome do Produto"
    nomeProduto.textColor = UIColor.orange
    nomeProduto.font = UIFont.systemFont(ofSize: 20.0)

    self.fundo.addSubview(nomeProduto)

    divisor = UIView(frame: .zero)
    divisor.autoSetDimension(.height, toSize: 1.0)
    divisor.backgroundColor = UIColor.lightGray

    self.fundo.addSubview(divisor)

    lblQuantidade = UILabel(frame: .zero)
    lblQuantidade.autoSetDimension(.height, toSize: 30.0)
    lblQuantidade.text = "Quantidade"
    lblQuantidade.textColor = UIColor(codHex: 0x707070)
    lblQuantidade.font = UIFont.systemFont(ofSize: 16.0)

    self.fundo.addSubview(lblQuantidade)

    stepperQuantidade = UIStepperCustom(frame: .zero)
    stepperQuantidade.autoSetDimension(.height, toSize: 30.0)
    stepperQuantidade.autoSetDimension(.width, toSize: 120.0)
    stepperQuantidade.borderColorBotaoDireito = UIColor.orange
    stepperQuantidade.textColorBotaoDireito = UIColor.orange
    stepperQuantidade.valor = 1
    stepperQuantidade.valorPasso = 1
    stepperQuantidade.valorMinimo = 1
    stepperQuantidade.valorMaximo = 100

    self.fundo.addSubview(stepperQuantidade)



    viewAvancar = UIView(frame: .zero)
    viewAvancar.autoSetDimension(.width, toSize: screenSize.width)
    viewAvancar.autoSetDimension(.height, toSize: 86.0)
    viewAvancar.backgroundColor = UIColor.white

    self.addSubview(viewAvancar)

    divisor2 = UIView(frame: .zero)
    divisor2.autoSetDimension(.height, toSize: 1.0)
    divisor2.backgroundColor = UIColor.lightGray

    self.viewAvancar.addSubview(divisor2)

    lblTotal = UILabel(frame: .zero)
    lblTotal.text = "TOTAL:"
    lblTotal.textColor = UIColor(codHex: 0x6BC43C)
    lblTotal.font = UIFont.systemFont(ofSize: 16.0)

    self.viewAvancar.addSubview(lblTotal)

    total = UILabel(frame: .zero)
    total.text = "R$ 0,00"
    total.textAlignment = .right
    total.textColor = UIColor(codHex: 0x6BC43C)
    total.font = UIFont.systemFont(ofSize: 16.0)

    self.viewAvancar.addSubview(total)

    btnAvancar = UIButton(frame: .zero)
    btnAvancar.autoSetDimension(.height, toSize: 45.0)
    btnAvancar.layer.cornerRadius = 2
    btnAvancar.backgroundColor = UIColor.orange
    btnAvancar.setTitle("ADICIONAR AO CARRINHO", for: .normal)

    self.viewAvancar.addSubview(btnAvancar)

}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
}

override func updateConstraints() {
    if(shouldSetupConstraints) {

        let zero: CGFloat = 0.0
        let margem: CGFloat = 8.0
        let margem2x: CGFloat = 16.0

        scrollView.autoPinEdgesToSuperviewEdges(with: .zero, excludingEdge: .bottom)
        scrollView.autoPinEdge(.bottom, to: .top, of: viewAvancar, withOffset: zero)

        viewFundo.autoPinEdgesToSuperviewEdges()

        bannerView.autoPinEdge(toSuperviewEdge: .top)

        viewPreco.autoPinEdge(toSuperviewMargin: .right)
        viewPreco.autoPinEdge(toSuperviewMargin: .top)

        preco.autoPinEdgesToSuperviewMargins()

        fundo.autoPinEdge(toSuperviewEdge: .left)
        fundo.autoPinEdge(toSuperviewEdge: .right)
        fundo.autoPinEdge(.top, to: .bottom, of: bannerView, withOffset: zero)

        nomeProduto.autoPinEdgesToSuperviewEdges(with: UIEdgeInsets(inset: margem), excludingEdge: .bottom)

        divisor.autoPinEdge(toSuperviewMargin: .left)
        divisor.autoPinEdge(toSuperviewMargin: .right)
        divisor.autoPinEdge(.top, to: .bottom, of: nomeProduto, withOffset: margem)

        if (lblQuantidade != nil && lblQuantidade.superview != nil) {
            lblQuantidade.autoPinEdge(toSuperviewMargin: .left)
            lblQuantidade.autoPinEdge(.right, to: .left, of: stepperQuantidade, withOffset: margem)
            lblQuantidade.autoPinEdge(.top, to: .bottom, of: divisor, withOffset: margem2x)
        }


        stepperQuantidade.autoPinEdge(toSuperviewMargin: .right)
        stepperQuantidade.autoPinEdge(.top, to: .bottom, of: divisor, withOffset: margem2x)


        viewAvancar.autoPinEdgesToSuperviewEdges(with: UIEdgeInsets.zero, excludingEdge: .top)

        divisor2.autoPinEdge(toSuperviewEdge: .left)
        divisor2.autoPinEdge(toSuperviewEdge: .right)
        divisor2.autoPinEdge(toSuperviewEdge: .top)

        lblTotal.autoPinEdge(.top, to: .bottom, of: divisor2, withOffset: margem)
        lblTotal.autoPinEdge(toSuperviewMargin: .left)

        total.autoPinEdge(.top, to: .bottom, of: divisor2, withOffset: margem)
        total.autoPinEdge(.left, to: .right, of: lblTotal, withOffset: margem)
        total.autoPinEdge(toSuperviewMargin: .right)

        btnAvancar.autoPinEdges(toSuperviewMarginsExcludingEdge: .top)
        btnAvancar.autoPinEdge(.top, to: .bottom, of: total, withOffset: margem)
        btnAvancar.autoPinEdge(.top, to: .bottom, of: lblTotal, withOffset: margem)

        //

        shouldSetupConstraints = false
    }
    super.updateConstraints()
}
}

View 树:

UIView
-UIScrollView
..-UIView
...-UILabel
...-UIView
...
-UIView
..-UIView
..-UILabel
..-UILabel
..-UIButton

和 Controller :

override func viewDidLoad() {
    super.viewDidLoad()

    self.title = "Detalhes"
    self.view.addSubview(det)
    det.autoPinEdgesToSuperviewEdges(with: UIEdgeInsets.zero)

    det.nomeProduto.text = produto.nome

    Utilities.smartLoadImage(path: produto.getSrcImagem(), img: det.bannerView)

}

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()

    var sizeOfContent: CGFloat = 0

    for i in 0..<det.fundo.subviews.count {
        sizeOfContent += det.fundo.subviews[i].bounds.height
    }


    det.scrollView.contentSize = CGSize(width: det.screenSize.width, height: (sizeOfContent + det.bannerView.bounds.height))


}

<小时/>

我该如何解决这个问题？

@编辑:

Probably you contentSize is not adjusted to your scrollView size. Print them and you will see what is happening.

在 viewDidLayoutSubviews() 中，大小设置为 w = 320.0 和 h = 406.0。看来是正确的。

Answer 1

可能您的 contentSize 未调整为您的 ScrollView 大小。打印它们，您就会看到发生了什么。