所选文本未出现在 UITextField 上

Question

每当我点击 UITextField 时，都会出现一个联系人列表，当点击联系人时，phone 号码应该出现在被点击的文本字段中。我目前有 3 个文本字段，每次我 select 一个联系人时，它只更新第一个文本字段，即使例如我 select 编辑了第二个文本字段。我该如何修复它，以便 phone 数字出现在 select 编辑的相应文本字段中？

我正在使用 Xcode 10，我认为问题是由 func setNumberFromContact

    @IBOutlet weak var phonenumber: UITextField!
    @IBOutlet weak var phonenumber1: UITextField!
    @IBOutlet weak var phonenumber2: UITextField!


        func contactPicker(_ picker: CNContactPickerViewController, didSelect contact: CNContact) {


            let phoneNumberCount = contact.phoneNumbers.count

            guard phoneNumberCount > 0 else {
                dismiss(animated: true)
                //show pop up: "Selected contact does not have a number"
                return
            }

            if phoneNumberCount == 1 {
                setNumberFromContact(contactNumber: contact.phoneNumbers[0].value.stringValue)

            }else{

                let alertController = UIAlertController(title: "Select one of the numbers", message: nil, preferredStyle: .alert)

                for i in 0...phoneNumberCount-1 {
                    let phoneAction = UIAlertAction(title: contact.phoneNumbers[i].value.stringValue, style: .default, handler: {
                        alert -> Void in
                        self.setNumberFromContact(contactNumber: contact.phoneNumbers[i].value.stringValue)
                    })
                    alertController.addAction(phoneAction)
                }
                let cancelAction = UIAlertAction(title: "Cancel", style: .destructive, handler: {
                    alert -> Void in

                })
                alertController.addAction(cancelAction)

                dismiss(animated: true)
                self.present(alertController, animated: true, completion: nil)
            }
        }

        func setNumberFromContact(contactNumber: String) {

            var contactNumber = contactNumber.replacingOccurrences(of: "-", with: "")
            contactNumber = contactNumber.replacingOccurrences(of: "(", with: "")
            contactNumber = contactNumber.replacingOccurrences(of: ")", with: "")
            guard contactNumber.count >= 10 else {
                dismiss(animated: true) {
                    self.presentAlert(alertTitle: "", alertMessage: "A maximum of 10 contacts allowed per session", lastAction: nil)
                }
                return
            }

            phonenumber.text = String(contactNumber.suffix(10))

        }

        func contactPickerDidCancel(_ picker: CNContactPickerViewController) {

        }




}

extension SelfTestTimer: UITextFieldDelegate {
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        return true
    }


    func textFieldDidBeginEditing(_ textField: UITextField) {

        if textField.hasText{
            //dont do anything

        }else{

        contactPicker.delegate = self
        self.present(contactPicker, animated: true, completion: nil)
        }
        return
    }

Answer 1

您的解决方案仅更新一个文本字段的原因是因为您只更新该文本字段的文本。在这一行 phonenumber.text = String(contactNumber.suffix(10)) 中，您仅更改 phonenumber 的文本。一个好的解决方案如下：

创建一个临时 UITextField 来存储选定的文本字段引用

@IBOutlet weak var phonenumber: UITextField!
@IBOutlet weak var phonenumber1: UITextField!
@IBOutlet weak var phonenumber2: UITextField!
var currentTextField: UITextField?

并在文本字段委托方法中使用该文本字段

extension SelfTestTimer: UITextFieldDelegate {
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        currentTextField = nil
        textField.resignFirstResponder()
        return true
    }
    func textFieldDidBeginEditing(_ textField: UITextField) {
        if textField.hasText{
            //dont do anything
        }else{
            currentTextField = textField
            contactPicker.delegate = self
            self.present(contactPicker, animated: true, completion: nil)
        }
        return
    }
}

在该文本字段中分配选定的联系电话

func setNumberFromContact(contactNumber: String) {
    var contactNumber = contactNumber.replacingOccurrences(of: "-", with: "")
    contactNumber = contactNumber.replacingOccurrences(of: "(", with: "")
    contactNumber = contactNumber.replacingOccurrences(of: ")", with: "")
    guard contactNumber.count >= 10 else {
        dismiss(animated: true) {
            self.presentAlert(alertTitle: "", alertMessage: "A maximum of 10 contacts allowed per session", lastAction: nil)
        }
        return
    }
    currentTextField?.text = String(contactNumber.suffix(10))
}

所选文本未出现在 UITextField 上

Selected text doesn't appear on the UITextField

uitextfield

ios

swift