用swift5写一个简易注册界面
时间: 2023-08-04 10:34:08 浏览: 65
好的,下面是一个简易的注册界面的 Swift 5 代码:
```swift
import UIKit
class RegisterViewController: UIViewController {
let emailTextField: UITextField = {
let textField = UITextField()
textField.placeholder = "邮箱"
textField.borderStyle = .roundedRect
textField.translatesAutoresizingMaskIntoConstraints = false
return textField
}()
let passwordTextField: UITextField = {
let textField = UITextField()
textField.placeholder = "密码"
textField.borderStyle = .roundedRect
textField.isSecureTextEntry = true
textField.translatesAutoresizingMaskIntoConstraints = false
return textField
}()
let registerButton: UIButton = {
let button = UIButton(type: .system)
button.setTitle("注册", for: .normal)
button.addTarget(self, action: #selector(registerButtonTapped), for: .touchUpInside)
button.translatesAutoresizingMaskIntoConstraints = false
return button
}()
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
navigationItem.title = "注册"
view.addSubview(emailTextField)
view.addSubview(passwordTextField)
view.addSubview(registerButton)
NSLayoutConstraint.activate([
emailTextField.centerXAnchor.constraint(equalTo: view.centerXAnchor),
emailTextField.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 50),
emailTextField.widthAnchor.constraint(equalToConstant: 300),
passwordTextField.centerXAnchor.constraint(equalTo: view.centerXAnchor),
passwordTextField.topAnchor.constraint(equalTo: emailTextField.bottomAnchor, constant: 20),
passwordTextField.widthAnchor.constraint(equalToConstant: 300),
registerButton.centerXAnchor.constraint(equalTo: view.centerXAnchor),
registerButton.topAnchor.constraint(equalTo: passwordTextField.bottomAnchor, constant: 50),
registerButton.widthAnchor.constraint(equalToConstant: 200),
registerButton.heightAnchor.constraint(equalToConstant: 50)
])
}
@objc func registerButtonTapped() {
guard let email = emailTextField.text, !email.isEmpty,
let password = passwordTextField.text, !password.isEmpty else {
// 如果邮箱或密码为空,弹出提示框
let alert = UIAlertController(title: "错误", message: "请输入邮箱和密码", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "好的", style: .default, handler: nil))
present(alert, animated: true, completion: nil)
return
}
// 注册逻辑
}
}
```
这个简易的注册界面只包括了一个邮箱输入框、一个密码输入框和一个注册按钮。在视图加载时,我们添加了这些视图并使用了自动布局约束来布局它们。
当用户点击注册按钮时,`registerButtonTapped` 方法将会被调用。在这个方法中,我们首先检查邮箱和密码是否为空,如果为空则弹出一个提示框。如果邮箱和密码都不为空,你可以在这个方法中添加你自己的注册逻辑。