Expansion card

This package provides an easy implementation of a Expansion type card where you can also add gif at the background.

How to use

import 'package:expansion_card/expansion_card.dart';

Center(
            child: ExpansionCard(
              background: Image.asset("assets/animations/sleep.gif"),
              title: Container(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Text(
                      "Header",
                      style: TextStyle(
                        fontFamily: 'BalooBhai',
                        fontSize: 30,
                        color: Colors.white,
                      ),
                    ),
                    Text(
                      "Sub",
                      style: TextStyle(
                          fontFamily: 'BalooBhai', fontSize: 20, color: Colors.white),
                    ),
                  ],
                ),
              ),
              children: <Widget>[
                Container(
                  margin: EdgeInsets.symmetric(horizontal: 7),
                  child: Text("Content goes over here !",
                      style: TextStyle(
                          fontFamily: 'BalooBhai',
                          fontSize: 20,
                          color: Colors.white)),
                )
              ],
            ));

Custom Usage

There are several options that allow for more control:

Properties	Description
`leading`	Define an action after slidding a button
`background`	provide any image asset file (supports gif also)
`onExpansionChanged`	When the tile starts expanding, this function is called with the value true. When the tile starts collapsing, this function is called with the value false.
`trailing`	A widget to display instead of a rotating arrow icon
`initiallyExpanded`	Specifies if the list tile is initially expanded (true) or collapsed (false, the default)