Abhishek9634 · July 20, 2020 18:35 · Jul 20, 2020
diff --git a/KeyboardNotification.swift b/KeyboardNotification.swift
@@ -0,0 +1,35 @@
+
+extension ViewController {
+
+    private func setupKeyboardNotifications() {
+        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(_ sender: Notification) {
+        guard let info = sender.userInfo,
+            let frame = (info[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue else {
+                return
+        }
+
+        self.bottomConstraint.constant = frame.size.height
+        UIView.animate(withDuration: 0.3) {
+            self.view.layoutIfNeeded()
+        }
+    }
+
+    @objc
+    private func keyboardWillHide(_ sender: Notification) {
+        self.bottomConstraint.constant = 0
+        self.view.layoutIfNeeded()
+    }
+
+}