flutter refreshindicator not working code example

Example: refresh indicator not working flutter

By design, RefreshIndicator works with ListView.

RefreshIndicator(
    onRefresh: _onRefresh,
    child: ListView(
      padding: EdgeInsets.all(8.0),
      physics: const BouncingScrollPhysics(
      	parent: AlwaysScrollableScrollPhysics(),
      ),
      children: _listData.map((i) {
        return ListTile(
          title: Text("Item $i"),
        );
      }).toList(),
    )
);

Using AlwaysScrollableScrollPhysics() will ensure that the scroll view is always
scrollable and, therefore, can trigger the RefreshIndicator.

Right now I think Create the scroll physics with 
BouncingScrollPhysics(parent: AlwaysScrollableScrollPhysics) and not just 
AlwaysScrollableScrollPhysics() scroll physics. Because BouncingScrollPhysics 
works for short lists for bounce. Now AlwaysScrollableScrollPhysics is required
to be included for the expected behaviour.