添加登录流程、会话路由和对齐参考 UI 的主 Tab 框架

suixinkan/Theme/AppColor.swift

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+//
+//  AppColor.swift
+//  suixinkan
+//
+
+import UIKit
+
+/// 应用主题色，与 Android `theme/Color.kt` 对齐。
+enum AppColor {
+
+    static let primary = UIColor(red: 0 / 255, green: 115 / 255, blue: 255 / 255, alpha: 1)
+    static let text333 = UIColor(red: 51 / 255, green: 51 / 255, blue: 51 / 255, alpha: 1)
+    static let text666 = UIColor(red: 102 / 255, green: 102 / 255, blue: 102 / 255, alpha: 1)
+    static let agreementLink = UIColor(red: 32 / 255, green: 139 / 255, blue: 255 / 255, alpha: 1)
+    static let inputBackground = UIColor(red: 244 / 255, green: 244 / 255, blue: 244 / 255, alpha: 1)
+    static let secondaryButtonBackground = UIColor(red: 239 / 255, green: 246 / 255, blue: 255 / 255, alpha: 1)
+    static let buttonDisabled = UIColor(red: 192 / 255, green: 192 / 255, blue: 192 / 255, alpha: 1)
+    static let placeholder = UIColor.gray
+}

suixinkan/Theme/UIColor+Hex.swift

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+//
+//  UIColor+Hex.swift
+//  suixinkan
+//
+
+import UIKit
+
+extension UIColor {
+
+    /// 通过 0xRRGGBB 和透明度创建 UIColor。
+    convenience init(hex: UInt, alpha: CGFloat = 1.0) {
+        self.init(
+            red: CGFloat((hex >> 16) & 0xff) / 255.0,
+            green: CGFloat((hex >> 8) & 0xff) / 255.0,
+            blue: CGFloat(hex & 0xff) / 255.0,
+            alpha: alpha
+        )
+    }
+}