如何在swift4中将CNPhoneNumber转换为字符串？ [英] how to convert a CNPhoneNumber to string in swift4?

问题描述

我正在使用以下代码从通讯录应用中获取联系人号码，但是当我想在标签中显示该号码时，我收到此警告，但无法正常工作：
从 CNPhoneNumber转换为不相关的类型 String总是失败

I am using this code for getting contact number from contacts app but when I want to show the number in label I get this warning and doesn't work: Cast from 'CNPhoneNumber' to unrelated type 'String' always fails

func contactPicker(_ picker: CNContactPickerViewController, didSelect contacts: [CNContact]) {
    contacts.forEach {(contact) in
        for number in contact.phoneNumbers{
            let phone = number.value
            print(phone)
            numberLabel.text = phone as! String
        }
    }
}

推荐答案

尝试：

if let phone = number.value as? CNPhoneNumber {
    print(phone.stringValue)
} else {
   print("number.value not of type CNPhoneNumber")
}

还可以查看 CNContact ， CNPhoneNumber

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