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[ChannelListView] Convert listView.custom into listView.separated

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Signed-off-by: Sahil Kumar <[email protected]>
This commit is contained in:
Sahil Kumar
2020-12-28 23:30:35 +05:30
parent 0f36fdcf4f
commit 38d3140ab1
1 changed files with 13 additions and 25 deletions
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lib/src/channel_list_view.dart
+13 -25
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@@ -278,21 +278,19 @@ class _ChannelListViewState extends State<ChannelListView>
},
);
} else {
child = ListView.custom(
child = ListView.separated(
physics: AlwaysScrollableScrollPhysics(),
controller: _scrollController,
childrenDelegate: SliverChildBuilderDelegate(
(context, i) {
return _itemBuilder(context, i, channels);
},
childCount: (channels.length * 2) + 1,
findChildIndexCallback: (key) {
final ValueKey<String> valueKey = key;
final index = channels.indexWhere(
(channel) => 'CHANNEL-${channel.id}' == valueKey.value);
return index != -1 ? (index * 2) : null;
},
),
itemCount:
channels.isNotEmpty ? channels.length + 1 : channels.length,
separatorBuilder: (_, index) {
if (widget.separatorBuilder != null) {
return widget.separatorBuilder(context, index);
}
return _separatorBuilder(context, index);
},
itemBuilder: (context, index) {
return _listItemBuilder(context, index, channels);
},
);
}
}
@@ -483,20 +481,10 @@ class _ChannelListViewState extends State<ChannelListView>
);
}
Widget _itemBuilder(context, int i, List<Channel> channels) {
if (i % 2 != 0) {
if (widget.separatorBuilder != null) {
return widget.separatorBuilder(context, i);
}
return _separatorBuilder(context, i);
}
i = i ~/ 2;
Widget _listItemBuilder(BuildContext context, int i, List<Channel> channels) {
final channelsProvider = ChannelsBloc.of(context);
if (i < channels.length) {
final channel = channels[i];
ChannelTapCallback onTap;
if (widget.onChannelTap != null) {
onTap = widget.onChannelTap;