flex_grid

The FlexGrid control provides a powerful and quickly way to display data in a tabular format. It is including that frozened column/row,loading more, high performance and better experience in TabBarView/PageView.

parameter	description	default
frozenedColumnsCount	The count of forzened columns	0
frozenedRowsCount	The count of forzened rows	0
cellBuilder	The builder to create cell	required
cellBuilder	The builder to create header	required
columnsCount	The count of columns, it should big than 0	required
source	The data source of [FlexGrid]	required
rowWrapper	decorate row widget in this call back	null
rebuildCustomScrollView	rebuild when source is changed, It’s from [LoadingMoreCustomScrollView]	false
controller	The [ScrollController] on vertical direction	null
horizontalController	The [SyncControllerMixin] for horizontal direction	null
outerHorizontalSyncController	The Outer [SyncControllerMixin], for example [ExtendedTabBarView] or [ExtendedPageView]. It make better experience when scroll on horizontal direction	null
physics	The physics on both horizontal and vertical direction	null
highPerformance	If true, forces the children to have the given extent(Cell height/width) in the scroll direction.	false
headerStyle	An immutable style describing how to create header	CellStyle.header()
cellStyle	An immutable style describing how to create cell	CellStyle.cell()
indicatorBuilder	Widget builder for different loading state, it’s from [LoadingMoreCustomScrollView]	null
extendedListDelegate	A delegate that provides extensions, it’s from [LoadingMoreCustomScrollView]	null
headersBuilder	The builder to custom the headers of [FlexGrid]	null

source

[FlexGrid.source] is form loading_more_list, LoadingMoreBase is data collection for loading more. override loadData method to load your data. set hasMore to false when it has no more data.

class FlexGridSource extends LoadingMoreBase<GridRow> {
  int _pageIndex = 1;

  void _load() {
    for (int i = 0; i < 15; i++) {
      add(GridRow(name: 'index:$_pageIndex-$i'));
    }
  }

  @override
  bool get hasMore => _pageIndex < 4;

  @override
  Future<bool> loadData([bool isloadMoreAction = false]) async {
    await Future<void>.delayed(const Duration(seconds: 2));
    _load();
    _pageIndex++;
    return true;
  }

  @override
  Future<bool> refresh([bool notifyStateChanged = false]) async {
    _pageIndex = 1;
    return super.refresh(notifyStateChanged);
  }
}

rowWrapper

decorate row widget in this call back.

    FlexGrid(
      rowWrapper: (
        BuildContext context,
        T data,
        int row,
        Widget child,
      ) {
        return Column(
          children: <Widget>[
            child,
            const Divider(),
          ],
        );
      },
    );

headersBuilder

you can add anyother headers in this call back.

    FlexGrid(
      headersBuilder: (BuildContext b, Widget header) {
        return <Widget>[
          header,
          SliverToBoxAdapter(
            child: PullToRefreshContainer(
                (PullToRefreshScrollNotificationInfo info) {
              return PullToRefreshHeader(
                info,
                source.lastRefreshTime,
              );
            }),
          ),
        ];
      },

Download source code on GitHub

https://github.com/fluttercandies/flex_grid