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lib/helpers/comments_helper.dart

@@ -25,6 +25,18 @@ class CommentsHelper {
     return response.getObject()["commentID"];
   }
 
+  /// Get a single comment from the server, specified by its [id]
+  Future<Comment> getSingle(int id) async {
+    final response = await APIRequest(
+        uri: "comments/get_single",
+        needLogin: true,
+        args: {"commentID": id.toString()}).exec();
+
+    if (response.code != 200) return null;
+
+    return apiToComment(response.getObject());
+  }
+
   /// Turn an API entry into a [Comment] object
   static Comment apiToComment(Map<String, dynamic> entry) {
     return Comment(

lib/ui/tiles/post_tile.dart

@@ -45,6 +45,9 @@ class PostTile extends StatefulWidget {
 }
 
 class _PostTileState extends State<PostTile> {
+  // Helpers
+  final _commentsHelper = CommentsHelper();
+
   // Class members
   TextEditingController _commentController = TextEditingController();
   File _commentImage;
@@ -308,7 +311,7 @@ class _PostTileState extends State<PostTile> {
   Future<void> _submitComment() async {
     _sendingComment = true;
 
-    final commentID = await CommentsHelper().createComment(NewComment(
+    final commentID = await _commentsHelper.createComment(NewComment(
       postID: widget.post.id,
       content: _commentController.text,
       image: _commentImage,
@@ -322,5 +325,14 @@ class _PostTileState extends State<PostTile> {
     clearCommentForm();
 
     // Get and show new comment
+    final newComment = await _commentsHelper.getSingle(commentID);
+
+    if (newComment == null)
+      return showSimpleSnack(
+          context, tr("Could not retrieve created comment!"));
+
+    setState(() {
+      widget.post.comments.add(newComment);
+    });
   }
 }