编辑页增加键盘遮挡处理

Note/ClipEditViewController.swift

@@ -29,6 +29,41 @@ class ClipEditViewController: UIViewController {
 
         setupNavigationBar()
         setupTextView()
+        setupKeyboardObservers()
+    }
+
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+
+    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
+            self.view.layoutIfNeeded()
+        }
+    }
+
+    @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
+            self.view.layoutIfNeeded()
+        }
     }
 
     override func viewDidAppear(_ animated: Bool) {