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add null check to user list view

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This commit is contained in:
Salvatore Giordano
2021-07-21 12:23:09 +02:00
parent 7d1259ce18
commit f4457cb618
1 changed files with 33 additions and 27 deletions
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packages/stream_chat_flutter/lib/src/user_list_view.dart
+33 -27
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@@ -160,38 +160,44 @@ class _UserListViewState extends State<UserListView>
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
final child = ColoredBox( final userListCore = UserListCore(
color: UserListViewTheme.of(context).backgroundColor!, errorBuilder: widget.errorBuilder ??
child: UserListCore( (BuildContext context, Object err) => _buildError(err),
errorBuilder: widget.errorBuilder ?? emptyBuilder: widget.emptyBuilder ?? (context) => _buildEmpty(),
(BuildContext context, Object err) => _buildError(err), loadingBuilder: widget.loadingBuilder ??
emptyBuilder: widget.emptyBuilder ?? (context) => _buildEmpty(), (context) => LayoutBuilder(
loadingBuilder: widget.loadingBuilder ?? builder: (context, viewportConstraints) =>
(context) => LayoutBuilder( SingleChildScrollView(
builder: (context, viewportConstraints) => physics: const AlwaysScrollableScrollPhysics(),
SingleChildScrollView( child: ConstrainedBox(
physics: const AlwaysScrollableScrollPhysics(), constraints: BoxConstraints(
child: ConstrainedBox( minHeight: viewportConstraints.maxHeight,
constraints: BoxConstraints( ),
minHeight: viewportConstraints.maxHeight, child: const Center(
), child: CircularProgressIndicator(),
child: const Center(
child: CircularProgressIndicator(),
),
), ),
), ),
), ),
listBuilder: ),
widget.listBuilder ?? (context, list) => _buildListView(list), listBuilder:
pagination: widget.pagination, widget.listBuilder ?? (context, list) => _buildListView(list),
sort: widget.sort, pagination: widget.pagination,
filter: widget.filter, sort: widget.sort,
presence: widget.presence, filter: widget.filter,
groupAlphabetically: widget.groupAlphabetically, presence: widget.presence,
userListController: _userListController, groupAlphabetically: widget.groupAlphabetically,
), userListController: _userListController,
); );
final backgroundColor = UserListViewTheme.of(context).backgroundColor;
final child = backgroundColor != null
? ColoredBox(
color: backgroundColor,
child: userListCore,
)
: userListCore;
if (!widget.pullToRefresh) { if (!widget.pullToRefresh) {
return child; return child;
} else { } else {