CustomTextView: release notification block observer

1 files changed, 9 insertions, 1 deletions

diff --git a/ios/MullvadVPN/CustomTextView.swift b/ios/MullvadVPN/CustomTextView.swift
index 8467511cb1..aed22fe07e 100644
--- a/ios/MullvadVPN/CustomTextView.swift
+++ b/ios/MullvadVPN/CustomTextView.swift
@@ -81,6 +81,8 @@ class CustomTextView: UITextView {
         }
     }
 
+    private var notificationObserver: Any?
+
     override init(frame: CGRect, textContainer: NSTextContainer?) {
         super.init(frame: frame, textContainer: textContainer)
 
@@ -112,7 +114,7 @@ class CustomTextView: UITextView {
         self.textContainer.lineFragmentPadding = 0
 
         // Handle placeholder visibility
-        NotificationCenter.default.addObserver(
+        notificationObserver = NotificationCenter.default.addObserver(
             forName: NSTextStorage.didProcessEditingNotification,
             object: textStorage,
             queue: OperationQueue.main) { [weak self] (note) in
@@ -126,6 +128,12 @@ class CustomTextView: UITextView {
         fatalError("init(coder:) has not been implemented")
     }
 
+    deinit {
+        if let notificationObserver = notificationObserver {
+            NotificationCenter.default.removeObserver(notificationObserver)
+        }
+    }
+
     override func updateConstraints() {
         let textInset = placeholderTextInset