List refresh

[pilotviper134]

Hello,

I have normal list with comments in my app.

Widget ShowComments() {
return PagewiseListView(
pageSize: PAGE_SIZE,
physics: const AlwaysScrollableScrollPhysics(),
loadingBuilder: (context) {
return Container(
child: Center(
child: Container(
child: CircularProgressIndicator(
valueColor: AlwaysStoppedAnimation(Colors.white),
),
height: 50.0,
width: 50.0,
)
),
height: MediaQuery.of(context).size.height - 160,
width: MediaQuery.of(context).size.width,
);
},
noItemsFoundBuilder: (context) {
return Container(
child: Center(
child: Text(
'Brak komentarzy w tym momencie.',
style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
textAlign: TextAlign.center,
),
),
height: MediaQuery.of(context).size.height - 160,
width: MediaQuery.of(context).size.width,
);
},
retryBuilder: (context, callback) {
return Button(
child: Text(
'Spróbuj ponownie',
style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
textAlign: TextAlign.center,
),
gradient: LinearGradient(
colors: [
Color.fromRGBO(247, 131, 97, 1.0),
Color.fromRGBO(245, 75, 100, 1.0)
],
),
onPressed: () => callback(),
);
},
itemBuilder: (context, entry, index) {
return getWidget(widget.userResult, widget.postData, entry);
},
pageFuture: (pageIndex) {
currentPage = pageIndex;
commentsFuture = getComments(widget.userResult, widget.postData, currentPage * PAGE_SIZE, PAGE_SIZE);
return commentsFuture;
},
);
}

I adding to list using

Future<List> getComments(UserResult userResult, Post postData, int offset, int limit) async {
var head = {"Authorization": userResult.user.token};
Map response = await ServerManager.instance.SendFuture("api/v1/comments/get/${userResult.user.id}/${postData.id}", {"offset": offset, "limit": limit}, head);
CommentsResult commentsResult = CommentsResult.fromJson(response);
return commentsResult.comments;
}

Unfortunately, adding an item to the list the list does not refresh. I used StatefulWidget

[pilotviper134]

I will add that the items on the list are downloaded from the server and they download the content when they first enter the screen. Everything works nicely. The problem is that on the same screen the user can leave a comment. after leaving a comment, the list will not be refreshed until I leave and enter the screen again, my added comment will be shown. How to fix it?

[mishatron]

@pilotviper134 you can extend PagewiseLoadController and create there a method like
void insertItem(int position, T item) { this.loadedItems.insert(position, item); this.notifyListeners(); }
This will allow you to update UI after adding a comment. Issue can be closed