The starting line and or phrase on any flutter blog or tutorial is that flutter is all about widgets. Like everything doing things manually is tiring. So this is a ready to use flutter widget for your app.

flutter_grid_button

Flutter widget that arrange buttons in a grid. It is useful for making a number pad, calculator, and so on.

Getting Started

To use this plugin, add flutter_grid_button as a dependency in your pubspec.yaml file. The same way as in, A complete animation widget for rotation with flutter.

dependencies:
 flutter_grid_button: 

Import the library in your file.

import 'package:flutter_grid_button/flutter_grid_button.dart';

See the example directory for a complete sample app using GridButton. Or use the GridButton like below.

GridButton(
  onPressed: (String value) {
    /*...*/
  },
  items: [
    [
      GridButtonItem(title: "1"),
      GridButtonItem(child: Text("2")),
      GridButtonItem(title: "3", flex: 2),
    ],
    [
      GridButtonItem(title: "a", value: "100", longPressValue: "long"),
      GridButtonItem(title: "b", color: Colors.lightBlue)
    ],
  ],
)

GitHub Repository

Follow this project.