ios - UITextfield 委托(delegate)响应所有文本字段

Question

我有以下代码

var departureField = UITextField()
var arrivalField = UITextField()
var dateField = UITextField()

我正在为 arrivalField 设置委托(delegate)，而不是为其他字段设置委托(delegate)

arrivalField.delegate = self

我有以下委托(delegate)方法textFieldShouldBeginEditing。当我点击出发字段或日期字段时，两者都会响应该方法。我只为到达字段设置了委托(delegate)，并且我只想响应到达文本字段。我完全错过了什么吗？

import Foundation
import SwiftDate

class FlightStatusRouteViewController: UIViewController, UITextFieldDelegate {

    var date = NSDate()

    var departureField: UITextField!
    var arrivalField: UITextField!
    var dateField: UITextField!

    override func viewDidLoad() {
        self.createUI(self.view)
    }

    func createUI(parent: UIView) {
        let height = CGFloat(45)
        let datePicker = UIDatePicker()
        let btn = createButton("Submit")

        departureField = self.createInput("Departure Airport")
        arrivalField = self.createInput("Arrival Airport")
        dateField = self.createInput("Departure Date")

        departureField.delegate = nil
        arrivalField.delegate = self
        dateField.delegate = nil

        datePicker.datePickerMode = UIDatePickerMode.Date
        dateField.inputView = datePicker
        datePicker.addTarget(self, action: "updateDate:", forControlEvents: UIControlEvents.ValueChanged)

        parent.addSubview(departureField)
        parent.addSubview(arrivalField)
        parent.addSubview(dateField)
        parent.addSubview(btn)

        self.createTapGesture(btn, action: "submitForm:")

        dateField.text = date.toString(format: DateFormat.Custom("EEEE, dd MMMM YYYY"))

        dateField.snp_makeConstraints{ (make) -> Void in
            make.left.equalTo(parent)
            make.right.equalTo(parent)
            make.top.equalTo(parent).offset(10)
            make.height.equalTo(height)
        }

        departureField.snp_makeConstraints{ (make) -> Void in
            make.left.equalTo(parent)
            make.right.equalTo(parent)
            make.height.equalTo(height)
            make.top.equalTo(dateField.snp_bottom).offset(10)
        }

        arrivalField.snp_makeConstraints{ (make) -> Void in
            make.left.equalTo(parent)
            make.right.equalTo(parent)
            make.top.equalTo(departureField.snp_bottom).offset(10)
            make.height.equalTo(height)
        }

        btn.snp_makeConstraints{ (make) -> Void in
            make.top.equalTo(arrivalField.snp_bottom).offset(20)
            make.left.equalTo(parent)
            make.right.equalTo(parent)
            make.height.equalTo(height)
        }
    }

    func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
        let searchVc = SearchAirportsTableViewController()
        searchVc.searchField = textField
        self.presentViewController(searchVc, animated: true, completion: nil)
        return false
    }

    internal func updateDate(sender: UIDatePicker) {
        date = sender.date
        self.dateField.text = sender.date.toString(format: DateFormat.Custom("EEEE, dd MMMM YYYY"))
    }
}

<小时/>

func createInput(placeholder: String) -> UITextField {
    let textfield = TextField()
    let fonts = FlySAAFonts()

    textfield.placeholder = placeholder
    textfield.layer.cornerRadius = 5
    textfield.layer.borderWidth = 1
    textfield.font = UIFont(name: fonts.std, size: 14)!
    textfield.backgroundColor = FlySAAColors.offWhite
    textfield.tintColor = FlySAAColors.darkGry
    textfield.borderStyle = UITextBorderStyle.None
    textfield.layer.borderWidth = 0

    return textfield
}

Answer 1

您可以在 Storyboard 上查看 socket 。

或在

textFieldShouldBeginEditing

你检查是否

textField == departureField || textField == dateField
return false