添加登录流程、会话路由和对齐参考 UI 的主 Tab 框架

suixinkan/UI/Common/LoginTextField.swift

@@ -0,0 +1,83 @@
+//
+//  LoginTextField.swift
+//  suixinkan
+//
+
+import SnapKit
+import UIKit
+
+/// 登录页账号输入框，对应 Android `PhoneInputField`。
+final class LoginTextField: UIView {
+
+    private let textField = UITextField()
+
+    var text: String {
+        get { textField.text ?? "" }
+        set { textField.text = newValue }
+    }
+
+    var onTextChange: ((String) -> Void)?
+    var onReturnKey: (() -> Void)?
+
+    init(placeholder: String) {
+        super.init(frame: .zero)
+        setupUI(placeholder: placeholder)
+        setupConstraints()
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    @discardableResult
+    override func becomeFirstResponder() -> Bool {
+        textField.becomeFirstResponder()
+    }
+
+    private func setupUI(placeholder: String) {
+        backgroundColor = AppColor.inputBackground
+        layer.cornerRadius = 12
+        clipsToBounds = true
+
+        textField.font = .systemFont(ofSize: 14)
+        textField.textColor = AppColor.text333
+        textField.autocapitalizationType = .none
+        textField.autocorrectionType = .no
+        textField.returnKeyType = .next
+        textField.clearButtonMode = .whileEditing
+        textField.delegate = self
+
+        let attributes: [NSAttributedString.Key: Any] = [
+            .foregroundColor: AppColor.placeholder,
+            .font: UIFont.systemFont(ofSize: 14),
+        ]
+        textField.attributedPlaceholder = NSAttributedString(string: placeholder, attributes: attributes)
+
+        textField.addTarget(self, action: #selector(textDidChange), for: .editingChanged)
+        addSubview(textField)
+    }
+
+    private func setupConstraints() {
+        snp.makeConstraints { make in
+            make.height.equalTo(46)
+        }
+
+        textField.snp.makeConstraints { make in
+            make.leading.trailing.equalToSuperview().inset(16)
+            make.centerY.equalToSuperview()
+        }
+    }
+
+    @objc private func textDidChange() {
+        onTextChange?(text)
+    }
+}
+
+extension LoginTextField: UITextFieldDelegate {
+
+    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
+        onReturnKey?()
+        return true
+    }
+}