修复键盘弹起时遮挡底部文本的问题

Note/FormatLogViewController.swift

@@ -28,6 +28,11 @@ class FormatLogViewController: UIViewController {
         navigationItem.largeTitleDisplayMode = .never
         view.backgroundColor = .systemGroupedBackground
         setupUI()
+        setupKeyboardObservers()
+    }
+
+    deinit {
+        NotificationCenter.default.removeObserver(self)
     }
 
     private func setupUI() {
@@ -77,6 +82,34 @@ class FormatLogViewController: UIViewController {
         textView.resignFirstResponder()
     }
 
+    private func setupKeyboardObservers() {
+        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
+    }
+
+    @objc private func keyboardWillShow(_ notification: Notification) {
+        guard let keyboardFrame = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect else { return }
+        let keyboardFrameInView = view.convert(keyboardFrame, from: nil)
+        let intersection = keyboardFrameInView.intersection(view.bounds)
+        let keyboardHeight = intersection.height
+
+        let duration = notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? TimeInterval ?? 0.25
+
+        UIView.animate(withDuration: duration, delay: 0, options: .beginFromCurrentState) {
+            self.textView.contentInset.bottom = keyboardHeight
+            self.textView.verticalScrollIndicatorInsets.bottom = keyboardHeight
+        }
+    }
+
+    @objc private func keyboardWillHide(_ notification: Notification) {
+        let duration = notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? TimeInterval ?? 0.25
+
+        UIView.animate(withDuration: duration, delay: 0, options: .beginFromCurrentState) {
+            self.textView.contentInset.bottom = 0
+            self.textView.verticalScrollIndicatorInsets.bottom = 0
+        }
+    }
+
     @objc private func didTapFormatButton() {
         guard !trimmedText().isEmpty else {
             showEmptyAlert()

Note/FormatNoteViewController.swift

@@ -30,6 +30,11 @@ class FormatNoteViewController: UIViewController {
         navigationItem.largeTitleDisplayMode = .never
         view.backgroundColor = .systemGroupedBackground
         setupUI()
+        setupKeyboardObservers()
+    }
+
+    deinit {
+        NotificationCenter.default.removeObserver(self)
     }
 
     private func setupUI() {
@@ -101,6 +106,34 @@ class FormatNoteViewController: UIViewController {
         textView.resignFirstResponder()
     }
 
+    private func setupKeyboardObservers() {
+        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
+    }
+
+    @objc private func keyboardWillShow(_ notification: Notification) {
+        guard let keyboardFrame = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect else { return }
+        let keyboardFrameInView = view.convert(keyboardFrame, from: nil)
+        let intersection = keyboardFrameInView.intersection(view.bounds)
+        let keyboardHeight = intersection.height
+
+        let duration = notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? TimeInterval ?? 0.25
+
+        UIView.animate(withDuration: duration, delay: 0, options: .beginFromCurrentState) {
+            self.textView.contentInset.bottom = keyboardHeight
+            self.textView.verticalScrollIndicatorInsets.bottom = keyboardHeight
+        }
+    }
+
+    @objc private func keyboardWillHide(_ notification: Notification) {
+        let duration = notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? TimeInterval ?? 0.25
+
+        UIView.animate(withDuration: duration, delay: 0, options: .beginFromCurrentState) {
+            self.textView.contentInset.bottom = 0
+            self.textView.verticalScrollIndicatorInsets.bottom = 0
+        }
+    }
+
     @objc private func didTapPasteButton() {
         if let string = UIPasteboard.general.string {
             textView.text = string