In this article, we’ll explore the creation and usage of a Simple Folding Cell widget in Flutter. With this widget, you can easily create interactive cards that fold and unfold, enhancing user engagement. Let’s dive into the installation, construction, and necessary code to get you started!

Installation

To include the Folding Cell Widget in your Flutter project, follow these simple steps:

• Add the following dependency to your pubspec.yaml file:

dependencies:
  folding_cell: ^1.0.2

• Next, import the package in your project:

import 'package:folding_cell/folding_cell.dart';

Basic Usage

The following code demonstrates how to implement a simple folding cell in your Flutter application:

class FoldingCellSimpleDemo extends StatelessWidget {
  final _foldingCellKey = GlobalKey();

  @override
  Widget build(BuildContext context) {
    return Container(
      color: Color(0xFF2e282a),
      alignment: Alignment.topCenter,
      child: SimpleFoldingCell.create(
        key: _foldingCellKey,
        frontWidget: _buildFrontWidget(),
        innerWidget: _buildInnerWidget(),
        cellSize: Size(MediaQuery.of(context).size.width, 140),
        padding: EdgeInsets.all(15),
        animationDuration: Duration(milliseconds: 300),
        borderRadius: 10,
        onOpen: () => print('cell opened'),
        onClose: () => print('cell closed'),
      ),
    );
  }

  Widget _buildFrontWidget() {
    return Container(
      color: Color(0xFFffcd3c),
      alignment: Alignment.center,
      child: Stack(
        children: [
          Align(
            alignment: Alignment.center,
            child: Text(
              'CARD TITLE',
              style: GoogleFonts.aldrich(
                color: Color(0xFF2e282a),
                fontSize: 20.0,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
          Positioned(
            right: 10,
            bottom: 10,
            child: TextButton(
              onPressed: () => _foldingCellKey?.currentState?.toggleFold(),
              child: Text('OPEN'),
              style: TextButton.styleFrom(
                backgroundColor: Colors.white,
                minimumSize: Size(80, 40),
              ),
            ),
          )
        ],
      ),
    );
  }

  Widget _buildInnerWidget() {
    return Container(
      color: Color(0xFFecf2f9),
      padding: EdgeInsets.only(top: 10),
      child: Stack(
        children: [
          Align(
            alignment: Alignment.topCenter,
            child: Text(
              'CARD TITLE',
              style: GoogleFonts.aldrich(
                color: Color(0xFF2e282a),
                fontSize: 22.0,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
          Align(
            alignment: Alignment.center,
            child: Text(
              'CARD DETAIL',
              style: GoogleFonts.aldrich(
                color: Color(0xFF2e282a),
                fontSize: 40.0,
              ),
            ),
          ),
          Positioned(
            right: 10,
            bottom: 10,
            child: TextButton(
              onPressed: () => _foldingCellKey?.currentState?.toggleFold(),
              child: Text('CLOSE'),
              style: TextButton.styleFrom(
                backgroundColor: Colors.white,
                minimumSize: Size(80, 40),
              ),
            ),
          ),
        ],
      ),
    );
  }
}

Code Explanation

Imagine a folding cell as a secret compartment in a drawer. The drawer contains two sections: the front (where you see the title) and the inside (where the details are). When you open the drawer (i.e., toggle the fold), the front section opens, revealing the inner details of the card.

In our code:

• GlobalKey: Acts like the handle of your drawer, allowing us to control it easily.
• frontWidget & innerWidget: Represents the two compartments (front and back) of the drawer.
• toggleFold(): The action that opens and closes our drawer.
• Animation & Design: Just as a finely crafted drawer may have a smooth operating mechanism, we define the animation and dimensions for a sleek interaction.

Examples

You can find examples of how to use the Folding Cell widget in different contexts:

• Demo 1 – FoldingCell inside Container
• Demo 2 – FoldingCell inside ListView

Troubleshooting

If you encounter any issues while implementing the Folding Cell widget, consider the following suggestions:

• Check that the folding_cell dependency is correctly added to your pubspec.yaml.
• Ensure your widget has been initialized properly with a GlobalKey.
• Verify that the necessary imports are present in your file: import 'package:folding_cell/folding_cell.dart';

Additionally, for more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.