在 swift 中为 uiTextField 添加前缀
add prefix to uiTextField in swift
我正在尝试将国家代码添加为 textField 的前缀,以便用户可以输入其余的 phone 号码
@IBAction func phoneLogin(_ sender: Any) {
let countryCode = "+1"
guard let phoneNumber = countryCode + MobileLbl.text! else { return }
if ((MobileLbl.text?.isEmpty) != nil) {
print("Fill Your Number")
}else {
OTPtxt.isHidden = false
VerifyBtn.isHidden = false
PhoneAuthProvider.provider().verifyPhoneNumber(phoneNumber, uiDelegate: nil) { (verificationId, error) in
if error == nil {
guard let verifyId = verificationId else { return }
self.def.setValue(verifyId, forKey: "verificationId")
self.def.synchronize()
print(verificationId)
} else {
print("Unable to get Secret verification from firebase", error?.localizedDescription)
}
}
}
}
我收到这个错误 条件绑定的初始化器必须有可选类型,而不是 'String'
您正在强制解包 MobileLbl.text!
,这不再使其成为可选的。去掉感叹号,就变成 MobileLbl.text
。还必须将 countryCode
移动到另一行,因为它也不是可选的。
let countryCode = "+1"
guard let phone = MobileLbl.text else { return nil }
let phoneNumber = countryCode + phone
我正在尝试将国家代码添加为 textField 的前缀,以便用户可以输入其余的 phone 号码
@IBAction func phoneLogin(_ sender: Any) {
let countryCode = "+1"
guard let phoneNumber = countryCode + MobileLbl.text! else { return }
if ((MobileLbl.text?.isEmpty) != nil) {
print("Fill Your Number")
}else {
OTPtxt.isHidden = false
VerifyBtn.isHidden = false
PhoneAuthProvider.provider().verifyPhoneNumber(phoneNumber, uiDelegate: nil) { (verificationId, error) in
if error == nil {
guard let verifyId = verificationId else { return }
self.def.setValue(verifyId, forKey: "verificationId")
self.def.synchronize()
print(verificationId)
} else {
print("Unable to get Secret verification from firebase", error?.localizedDescription)
}
}
}
}
我收到这个错误 条件绑定的初始化器必须有可选类型,而不是 'String'
您正在强制解包 MobileLbl.text!
,这不再使其成为可选的。去掉感叹号,就变成 MobileLbl.text
。还必须将 countryCode
移动到另一行,因为它也不是可选的。
let countryCode = "+1"
guard let phone = MobileLbl.text else { return nil }
let phoneNumber = countryCode + phone