expandable_bottom_bar_new 2.0.0-nullsafety.1

Animatable bottom app bar with expandable sheet. Use me if you need cool bottom bar!

example/main.dart

import 'package:expandable_bottom_bar_new/expandable_bottom_bar.dart';
import 'package:flutter/material.dart';
import 'theme.dart';

void main() => runApp(MaterialApp(home: Example()));

class Example extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: FlutterDark.dark(ThemeData.dark()),
      home: DefaultBottomBarController(
        child: Page(),
      ),
    );
  }
}

class Page extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Theme.of(context).canvasColor,

      //Set to true for bottom appbar overlap body content
      extendBody: true,

      appBar: AppBar(
        title: Text("Panel Showcase"),
        backgroundColor: Theme.of(context).bottomAppBarColor,
      ),

      // Lets use docked FAB for handling state of sheet
      floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
      floatingActionButton: GestureDetector(
        // Set onVerticalDrag event to drag handlers of controller for swipe effect
        onVerticalDragUpdate: DefaultBottomBarController.of(context)!.onDrag,
        onVerticalDragEnd: DefaultBottomBarController.of(context)!.onDragEnd,
        child: FloatingActionButton.extended(
          label: Text("Pull up"),
          elevation: 2,
          backgroundColor: Colors.deepOrange,
          foregroundColor: Colors.white,

          //Set onPressed event to swap state of bottom bar
          onPressed: () => DefaultBottomBarController.of(context)!.swap(),
        ),
      ),

      // Actual expandable bottom bar
      bottomNavigationBar: BottomExpandableAppBar(
        expandedHeight: 550,
        horizontalMargin: 16,
        shape: AutomaticNotchedShape(
            RoundedRectangleBorder(), StadiumBorder(side: BorderSide())),
        expandedBackColor: Theme.of(context).backgroundColor,
        expandedBody: Center(
          child: Text("Hello world!"),
        ),
        bottomAppBarBody: Padding(
          padding: const EdgeInsets.all(8.0),
          child: Row(
            mainAxisSize: MainAxisSize.max,
            children: <Widget>[
              Expanded(
                child: Text(
                  "Tets",
                  textAlign: TextAlign.center,
                ),
              ),
              Spacer(
                flex: 2,
              ),
              Expanded(
                child: Text(
                  "Stet",
                  textAlign: TextAlign.center,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}