🐛 Fixed(#95): Pagination is not working properly. (#105)

Author: dhvanit-v-simformsolutions

CHANGELOG.md

@@ -1,3 +1,11 @@
+##(Unreleased)
+
+* **Feat**: [105](https://github.com/SimformSolutionsPvtLtd/flutter_chatview/pull/105) Allow user 
+  to get callback when image is picked so user can perform operation like crop. Allow user to pass 
+  configuration like height, width, image quality and preferredCameraDevice.
+* **Fix**: [95](https://github.com/SimformSolutionsPvtLtd/flutter_chatview/issues/95) Fix issue of 
+  chat is added to bottom while `loadMoreData` callback.
+
 ## [1.3.0]
 
 * **Feat**: [71](https://github.com/SimformSolutionsPvtLtd/flutter_chatview/pull/71) Added Callback

example/lib/main.dart

@@ -79,8 +79,9 @@ class _ChatScreenState extends State<ChatScreen> {
         chatController: _chatController,
         onSendTap: _onSendTap,
         featureActiveConfig: const FeatureActiveConfig(
-            lastSeenAgoBuilderVisibility: true,
-            receiptsBuilderVisibility: true),
+          lastSeenAgoBuilderVisibility: true,
+          receiptsBuilderVisibility: true,
+        ),
         chatViewState: ChatViewState.hasMessages,
         chatViewStateConfig: ChatViewStateConfiguration(
           loadingWidgetConfig: ChatViewStateWidgetConfiguration(

lib/src/controller/chat_controller.dart

@@ -121,7 +121,8 @@ class ChatController {
 
   /// Function for loading data while pagination.
   void loadMoreData(List<Message> messageList) {
-    initialMessageList.addAll(messageList);
+    /// Here, we have passed 0 index as we need to add data before first data
+    initialMessageList.insertAll(0, messageList);
     messageStreamController.sink.add(initialMessageList);
   }
 

lib/src/widgets/chat_list_widget.dart

@@ -114,7 +114,7 @@ class ChatListWidget extends StatefulWidget {
 
 class _ChatListWidgetState extends State<ChatListWidget>
     with SingleTickerProviderStateMixin {
-  final ValueNotifier<bool> _isNextPageLoading = ValueNotifier(false);
+  final ValueNotifier<bool> _isNextPageLoading = ValueNotifier<bool>(false);
   ValueNotifier<bool> showPopUp = ValueNotifier(false);
   final GlobalKey<ReactionPopupState> _reactionPopupKey = GlobalKey();
 
@@ -241,7 +241,7 @@ class _ChatListWidgetState extends State<ChatListWidget>
   void _pagination() {
     if (widget.loadMoreData == null || widget.isLastPage == true) return;
     if ((scrollController.position.pixels ==
-            scrollController.position.minScrollExtent) &&
+            scrollController.position.maxScrollExtent) &&
         !_isNextPageLoading.value) {
       _isNextPageLoading.value = true;
       widget.loadMoreData!()