修复任务提交与弹窗交互问题

suixinkan/UI/Common/KeyboardAvoidingDialogView.swift

@@ -0,0 +1,105 @@
+//
+//  KeyboardAvoidingDialogView.swift
+//  suixinkan
+//
+
+import SnapKit
+import UIKit
+
+/// 自定义居中弹窗的键盘避让基类，负责在键盘弹出时同步移动内容卡片。
+class KeyboardAvoidingDialogView: UIView {
+
+    /// 需要避让键盘的弹窗内容视图，通常是白色卡片容器。
+    var keyboardAvoidingContentView: UIView?
+
+    /// 内容视图相对父视图的 centerY 约束，用于随键盘动画更新偏移。
+    var keyboardAvoidingCenterYConstraint: Constraint?
+
+    /// 内容视图与屏幕顶部、键盘顶部之间保留的最小距离。
+    var keyboardAvoidingMinimumSpacing: CGFloat = AppSpacing.md
+
+    private var keyboardObservers: [NSObjectProtocol] = []
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    deinit {
+        unregisterKeyboardObservers()
+    }
+
+    override func didMoveToSuperview() {
+        super.didMoveToSuperview()
+        if superview == nil {
+            unregisterKeyboardObservers()
+        } else {
+            registerKeyboardObservers()
+        }
+    }
+
+    private func registerKeyboardObservers() {
+        unregisterKeyboardObservers()
+        let center = NotificationCenter.default
+        keyboardObservers = [
+            center.addObserver(
+                forName: UIResponder.keyboardWillChangeFrameNotification,
+                object: nil,
+                queue: .main
+            ) { [weak self] notification in
+                self?.handleKeyboardNotification(notification)
+            },
+            center.addObserver(
+                forName: UIResponder.keyboardWillHideNotification,
+                object: nil,
+                queue: .main
+            ) { [weak self] notification in
+                self?.handleKeyboardNotification(notification)
+            }
+        ]
+    }
+
+    private func unregisterKeyboardObservers() {
+        keyboardObservers.forEach(NotificationCenter.default.removeObserver)
+        keyboardObservers.removeAll()
+    }
+
+    private func handleKeyboardNotification(_ notification: Notification) {
+        layoutIfNeeded()
+        guard let userInfo = notification.userInfo else { return }
+
+        let duration = (userInfo[UIResponder.keyboardAnimationDurationUserInfoKey] as? NSNumber)?.doubleValue ?? 0.25
+        let curveRaw = (userInfo[UIResponder.keyboardAnimationCurveUserInfoKey] as? NSNumber)?.uintValue
+            ?? UInt(UIView.AnimationCurve.easeInOut.rawValue)
+        let options = UIView.AnimationOptions(rawValue: curveRaw << 16)
+
+        keyboardAvoidingCenterYConstraint?.update(offset: keyboardAvoidanceOffset(from: userInfo))
+        UIView.animate(withDuration: duration, delay: 0, options: options) {
+            self.layoutIfNeeded()
+        }
+    }
+
+    private func keyboardAvoidanceOffset(from userInfo: [AnyHashable: Any]) -> CGFloat {
+        guard
+            let contentView = keyboardAvoidingContentView,
+            let keyboardFrameValue = userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue
+        else {
+            return 0
+        }
+
+        let keyboardFrame = convert(keyboardFrameValue.cgRectValue, from: nil)
+        guard keyboardFrame.minY < bounds.height else { return 0 }
+
+        let contentHeight = contentView.bounds.height
+        let baseMinY = bounds.midY - contentHeight / 2
+        let baseMaxY = bounds.midY + contentHeight / 2
+        let desiredBottom = keyboardFrame.minY - keyboardAvoidingMinimumSpacing
+        let neededShift = max(0, baseMaxY - desiredBottom)
+        let maxShift = max(0, baseMinY - keyboardAvoidingMinimumSpacing)
+        return -min(neededShift, maxShift)
+    }
+}