fix: #62

fluttercandies · Nov 15, 2023 · d14fab2 · d14fab2
1 parent f90ab90
commit d14fab2
Show file tree

Hide file tree

Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/lib/src/notification.dart b/lib/src/notification.dart
@@ -50,7 +50,16 @@ class GridViewOnceObserveNotification
 /// Sequence:
 /// [ObserverScrollStartNotification] -> [ObserverScrollDecisionNotification]
 /// -> [ObserverScrollEndNotification].
-class ObserverScrollNotification extends Notification {}
+class ObserverScrollNotification extends Notification {
+  @override
+  void dispatch(BuildContext? target) {
+    bool isMounted = target?.mounted ?? false;
+    if (!isMounted) {
+      return;
+    }
+    super.dispatch(target);
+  }
+}
 
 /// A notification that a scrolling task has started due to calling the jumpTo
 /// or animateTo method of [ObserverController].

diff --git a/lib/src/utils/src/observer_utils.dart b/lib/src/utils/src/observer_utils.dart
@@ -250,6 +250,10 @@ class ObserverUtils {
 
   /// Safely call findRenderObject method.
   static RenderObject? findRenderObject(BuildContext? context) {
+    bool isMounted = context?.mounted ?? false;
+    if (!isMounted) {
+      return null;
+    }
     try {
       // It throws an exception when getting renderObject of inactive element.
       return context?.findRenderObject();