Question

每当我单击UITextField时，都会显示联系人列表，并且当单击联系人时，电话号码应出现在所单击的文本字段中。我目前有3个文本字段，并且每次选择联系人时，即使例如选择了第二个文本字段，它也仅更新第一个文本字段。我该如何解决它，以便电话号码出现在所选的相应文本字段中？

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

引起的

    @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仅更新了该文本字段的文本。在phonenumber.text = String(contactNumber.suffix(10))这一行中，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所选的联系人号码

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

1 个答案: