Swift UIImageView isUserInteractionEnabled=true不'；行不通

下面的

DateField

类有一个日期字段和一个图标。由于某些原因，

fieldIcon.isUserInteractionEnabled=true

没有任何影响，并且不会将用户点击传递到该字段。我错过什么了吗

import UIKit
import SnapKit

protocol DateFieldDelegate: class {
    func dateSelected(_ dateField: DateField, date: Date)
}

class DateField: UIView, UITextFieldDelegate {

    weak var delegate: DateFieldDelegate?
    let field = UITextField()
    private var datePicker: UIDatePicker?

    convenience init(withStartDate startDate: Date) {
        self.init()

        datePicker = prepareDatePicker()
        guard let datePicker = datePicker else { return }
        field.inputView = datePicker
        field.delegate = self

        addSubview(field)
        field.snp.makeConstraints { make in
            make.top.equalToSuperview()
            make.leading.equalToSuperview()
            make.trailing.equalToSuperview()
            make.height.equalTo(37)
            make.bottom.equalToSuperview()
        }

        let fieldIcon = UIImageView(image: UIImage(asset: Asset.calendar))
        field.addSubview(fieldIcon)
        fieldIcon.isUserInteractionEnabled = true  // doesn't work
        fieldIcon.snp.makeConstraints { make in
            make.width.equalTo(21)
            make.height.equalTo(23)
            make.trailing.equalToSuperview().offset(-10)
            make.centerY.equalToSuperview()
        }

        setStyle(.regular)
    }

    func textFieldDidEndEditing(_ textField: UITextField) {
        guard let date = datePicker?.date else { return }
        field.text = date.formatToString()
        delegate?.dateSelected(self, date: date)
    }

    private func prepareDatePicker() -> UIDatePicker {
        let datePicker = UIDatePicker()
        datePicker.datePickerMode = .date
        datePicker.setDate(Date(), animated: false)
        datePicker.locale = Language.appLocale()
        return datePicker
    }
}

---

不确定我是否遗漏了您的代码中的某些内容，但您需要在图像中添加某种操作，启用

userInteractionEnabled

不会告诉它识别项目上的点击以及发生这种情况时要做什么。您需要向

UIImageView

let fieldIcon = UIImageView(image: UIImage(asset: Asset.calendar))
field.addSubview(fieldIcon)
fieldIcon.isUserInteractionEnabled = true  // doesn't work

let fieldIcon = UIImageView(image: UIImage(asset: Asset.calendar))
field.addSubview(fieldIcon)

let tapGesture = UITapGestureRecognizer(target: self, action: #selector(calenderIconTapped))
fieldIcon.addGestureRecognisor(tapGesture)

func calenderIconTapped() {
    // show the picker
}

更新：

重读你的问题后，我明白你现在想做什么。如果您想让图像视图上的任何点击通过下面的

UITextField

，则需要执行与您尝试的相反的操作。。。您需要在

UIImageView上将
userInteractionEnabled
设置为
false

fieldIcon.isUserInteractionEnabled = false

fieldIcon.isUserInteractionEnabled=false
不起作用。只是为了向其他人澄清；
fieldIcon
位于文本字段上方，我希望点击按钮可以通过并激活文本字段。这正是
isUserInteractionEnabled=false
应该做的，如果我尝试使用false，它就不起作用了。根据当设置isUserInteractionEnabled=false

（触摸事件）从事件队列中移除时，

isUserInteractionEnabled=true

适用于常规UIView；UIImageView中有一些东西可以防止触摸进入下面的视图。