Swift UITextField在UIStackView中不可编辑

Question

我正在学习开发一个应用程序。我使用了一个空的UIStack视图，我将通过代码填充它。为此，我创建了一个Helper类(type327.swift(。该类返回一个包含三个子堆栈视图的堆栈视图。其中一个子视图是具有UITextfields的Stackwiew。我想修改手机上的值，但文本字段似乎不可编辑。我做错了什么，或者我的逻辑故障在哪里？

327类：

let unit: String?

let labelVCurrentText: UILabel! = {
let label = UILabel()
//        label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .regular)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        //label.sizeToFit()
return label
}()
let labelVNomText: UILabel = {
let label = UILabel()
//        label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .bold)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        label.sizeToFit()
return label
}()
let labelAimRelativText: UILabel = {
let label = UILabel()
//        label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .bold)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        label.sizeToFit()
return label
}()
let labelVMaxRelativeText: UILabel = {
let label = UILabel()
//        label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .bold)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        label.sizeToFit()
return label
}()
let labelVMinRelativeText: UILabel = {
let label = UILabel()
//        label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .bold)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        label.sizeToFit()
return label
}()
let labelVBtwRelativeText: UILabel = {
let label = UILabel()
//        label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .bold)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        label.sizeToFit()
return label
}()
let labelVAimAbsolutText: UILabel = {
let label = UILabel()
//        label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .bold)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        label.sizeToFit()
return label
}()
let labelVMaxAbsolutText: UILabel = {let label = UILabel()
label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .bold)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        label.sizeToFit()
return label}()
let labelVMinAbsolutText: UILabel = {
let label = UILabel()
//        label.text = "Label 1"
//        label.font = .systemFont(ofSize: 14, weight: .bold)
//        label.numberOfLines = 1
//        label.backgroundColor = .clear
//        label.textAlignment = .left
//        label.sizeToFit()
return label
}()

let labelVBtwAbsolutText: UILabel = {
let label = UILabel()
return label
}()


let txtVCurrentValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
box.isEditable
return box
}()

let txtVNomValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
return box
}()
let txtAimRelativValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
return box
}()
let txtVMaxRelativeValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
return box
}()
let txtVMinRelativeValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
return box
}()
let txtVBtwRelativeValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
return box
}()
let txtVAimAbsolutValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
return box
}()
let txtVMaxAbsolutValue: UITextField = {
let box = UITextField()
box.backgroundColor = .systemBlue
box.keyboardType = .decimalPad
return box
}()
let txtVMinAbsolutValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
return box
}()
let txtVBtwAbsolutValue: UITextField = {
let box = UITextField()
box.keyboardType = .decimalPad
return box
}()
init(){
labelVCurrentText.text = "∆ p@Vnom"
labelVNomText.text = "Vnom"
labelAimRelativText.text = "Target value rel."
labelVMaxRelativeText.text = "VMax relativ"
labelVMinRelativeText.text = "VMin relativ"
labelVBtwRelativeText.text = "Vbtw realtiv"
labelVAimAbsolutText.text = "Target value abs."
labelVMaxAbsolutText.text = "VMax absolut"
labelVMinAbsolutText.text = "VMin absolut"
labelVBtwAbsolutText.text = "Vbtw absolut"

txtVNomValue.text = String(0)
txtVCurrentValue.text = String(0)
txtAimRelativValue.text = String(0)
txtVMaxRelativeValue.text = String(0)
txtVMinRelativeValue.text = String(0)
txtVBtwRelativeValue.text = String(0)
txtVAimAbsolutValue.text = String(0)
txtVMaxAbsolutValue.text = String(0)
txtVMinAbsolutValue.text = String(0)
txtVBtwAbsolutValue.text = String(0)
unit = "m3/h"
}


lazy var viewText: UIStackView = {
//MARK: - Textlabels for 327-View

let labelText: [UILabel] = [labelVCurrentText, labelVNomText, labelAimRelativText, labelVMaxRelativeText, labelVMinRelativeText, labelVBtwRelativeText, labelVAimAbsolutText, labelVMaxAbsolutText, labelVMinAbsolutText, labelVBtwAbsolutText]
for label in labelText {
label.textAlignment = .left
}
let stackView = UIStackView(arrangedSubviews: labelText)
stackView.axis = .vertical
stackView.spacing = 10
return stackView
}()

lazy var viewUnit: UIStackView = {
//MARK: - UnitLabels for 327-View
let labelVCurrentUnit = UILabel()
labelVCurrentUnit.text = "Pa"

let labelVNomUnit = UILabel()
labelVNomUnit.text = "m3/h"

let labelAimRelativUnit = UILabel()
labelAimRelativUnit.text = "%"

let labelVMaxRelativeUnit = UILabel()
labelVMaxRelativeUnit.text = "%"

let labelVMinRelativeUnit = UILabel()
labelVMinRelativeUnit.text = "%"

let labelVBtwRelativeUnit = UILabel()
labelVBtwRelativeUnit.text = "%"

let labelVAimAbsolutUnit = UILabel()
labelVAimAbsolutUnit.text = "m3/h"

let labelVMaxAbsolutUnit = UILabel()
labelVMaxAbsolutUnit.text = "m3/h"

let labelVMinAbsolutUnit = UILabel()
labelVMinAbsolutUnit.text = "m3/h"

let labelVBtwAbsolutUnit = UILabel()
labelVBtwAbsolutUnit.text = "m3/h"

let labelUnit: [UILabel] = [labelVCurrentUnit, labelVNomUnit, labelAimRelativUnit, labelVMaxRelativeUnit, labelVMinRelativeUnit, labelVBtwRelativeUnit, labelVAimAbsolutUnit, labelVMaxAbsolutUnit, labelVMinAbsolutUnit, labelVBtwAbsolutUnit]
for label in labelUnit {
label.textAlignment = .left
}
let stackView = UIStackView(arrangedSubviews: labelUnit)
stackView.axis = .vertical
stackView.spacing = 10
return stackView
}()

lazy var viewValue: UIStackView = {
//MARK: - Textlabels for 327-View

let boxValue: [UITextField] = [txtVCurrentValue, txtVNomValue, txtAimRelativValue, txtVMaxRelativeValue, txtVMinRelativeValue, txtVBtwRelativeValue, txtVAimAbsolutValue, txtVMaxAbsolutValue, txtVMinAbsolutValue, txtVBtwAbsolutValue]

//        for label in labelValue {
//            label.textAlignment = .left
//            label.text = "n/a"
//        }
let stackView = UIStackView(arrangedSubviews: boxValue)
stackView.axis = .vertical
stackView.spacing = 10
return stackView
}()

func setupStackViews() -> UIStackView {
let stackView = UIStackView(arrangedSubviews: [viewText, viewValue, viewUnit])
stackView.axis = .horizontal
stackView.distribution = .fillEqually
stackView.alignment = .fill
stackView.spacing = 10
stackView.translatesAutoresizingMaskIntoConstraints = false

return stackView
}



}

在控制器中调用创建的StackView：

override func viewDidLoad() {
super.viewDidLoad()
for label in viewLabels {
label.text = "n/a"
}
viewState = .disconnected
labelTitle.text = device?.name
baseActuator = BaseActuator(modbus: mod)
viewLabels = [labelProductnumber, labelActuatorIdent, labelSerialnumber, labelSoftwareVersion, labelActuatorType]
AddLabelToQueue()
lineChart.addSubview(lineChartView)
lineChartView.centerInSuperview()
lineChartView.width(to: lineChart)
lineChartView.height(to: lineChart)
setData()


refreshControll.addTarget(self, action: #selector(DidRefreshView(_:)), for: .valueChanged)

actuatorDataStackView.addSubview(type.setupStackViews())

}

你能帮我解释一下我做错了什么吗？

BR，怪异的

屏幕截图iPhone

情节提要

Answer 1

第一个注意：当我们不能使用您的代码时，很难提供帮助"照原样"值得回顾的是最小再现性示例

第二个注意事项：根据你的代码和故事板的图像，它看起来是一个布局问题。

灰色视图顶部和底部的红线表示您缺少一些约束。很可能，它没有"高度"约束。

这不一定是个问题，但你打电话给：

actuatorDataStackView.addSubview(type.setupStackViews())

而不对添加的堆栈视图设置任何约束。

如果您注意到应用程序的屏幕截图正在运行，则故事板中视图的灰色背景不会显示。如果随后使用Debug View Hierarchy，您将看到灰色视图的"高度"为零，并且添加的堆栈视图延伸到灰色视图的边界之外。

如果UI元素(如UITextField(在其超视图的边界之外，则不能与之交互。

在情节提要中，选择灰色视图并打开Clips to Bounds(选中复选框。

如果你运行该应用程序，你可能甚至看不到你添加的堆栈视图。

假设是这样的话，试着添加这样的堆栈视图：

let v = type.setupStackViews()
v.translatesAutoresizingMaskIntoConstraints = false
actuatorDataStackView.addSubview(v)
NSLayoutConstraint.activate([
v.topAnchor.constraint(equalTo: actuatorDataStackView.topAnchor),
v.leadingAnchor.constraint(equalTo: actuatorDataStackView.leadingAnchor),
v.trailingAnchor.constraint(equalTo: actuatorDataStackView.trailingAnchor),
v.bottomAnchor.constraint(equalTo: actuatorDataStackView.bottomAnchor),
])

这将导致灰色视图增长到添加的堆栈视图的大小。