Programmatically scrolling to the end of a ListView

Screenshot:

1. Scrolling with animation:

   final ScrollController _controller = ScrollController();
   
   // This is what you're looking for!
   void _scrollDown() {
     _controller.animateTo(
       _controller.position.maxScrollExtent,
       duration: Duration(seconds: 2),
       curve: Curves.fastOutSlowIn,
     );
   }
   
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       floatingActionButton: FloatingActionButton.small(
         onPressed: _scrollDown,
         child: Icon(Icons.arrow_downward),
       ),
       body: ListView.builder(
         controller: _controller,
         itemCount: 21,
         itemBuilder: (_, i) => ListTile(title: Text('Item $i')),          
       ),
     );
   }
   

2. Scrolling without animation:

   Replace above _scrollDown method with this:

   void _scrollDown() {
     _controller.jumpTo(_controller.position.maxScrollExtent);
   }