royarg02/dice_roller.dart

## dice_roller.dart
import 'dart:math' as math;

import 'package:flutter/material.dart';

var r = math.Random(412);

void main() {
  runApp(App());
}

class App extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Dice Roller',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Dice Roller'),
          backgroundColor: Colors.amber,
        ),
        body: Body(),
      ),
    );
  }
}

class Body extends StatefulWidget {
  @override
  _BodyState createState() {
    return _BodyState();
  }
}

class _BodyState extends State<Body> {
  int _dice = 0;

  String determineImage(int value) {
    switch (value) {
      case 1:
        return './assets/dice_1.png';
      case 2:
        return './assets/dice_2.png';
      case 3:
        return './assets/dice_3.png';
      case 4:
        return './assets/dice_4.png';
      case 5:
        return './assets/dice_5.png';
      case 6:
        return './assets/dice_6.png';
      default:
        return './assets/empty_dice.png';
    }
  }

  void _rollDice() {
    const _snackBar = SnackBar(
      content: Text('Rolling...'),
      duration: Duration(milliseconds: 300),
    );
    setState(() {
      _dice = r.nextInt(6) + 1;
    });
    Scaffold.of(context).showSnackBar(_snackBar);
  }

  void _countUp() {
    setState(() {
      _dice = _dice < 6 ? _dice + 1 : _dice;
    });
  }

  void _resetDice() {
    setState(() {
      _dice = 0;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          Image.asset(
            determineImage(_dice),
            height: 300,
            width: 300,
          ),
          ElevatedButton(
            child: Text('ROLL'),
            onPressed: _rollDice,
          ),
          ElevatedButton(
            child: Text('COUNT UP'),
            onPressed: _countUp,
          ),
          ElevatedButton(
            child: Text('RESET'),
            onPressed: _resetDice,
          ),
        ],
      ),
    );
  }
}
	import 'dart:math' as math;

	import 'package:flutter/material.dart';

	var r = math.Random(412);

	void main() {
	runApp(App());
	}

	class App extends StatelessWidget {
	@override
	Widget build(BuildContext context) {
	return MaterialApp(
	title: 'Dice Roller',
	home: Scaffold(
	appBar: AppBar(
	title: Text('Dice Roller'),
	backgroundColor: Colors.amber,
	),
	body: Body(),
	),
	);
	}
	}

	class Body extends StatefulWidget {
	@override
	_BodyState createState() {
	return _BodyState();
	}
	}

	class _BodyState extends State<Body> {
	int _dice = 0;

	String determineImage(int value) {
	switch (value) {
	case 1:
	return './assets/dice_1.png';
	case 2:
	return './assets/dice_2.png';
	case 3:
	return './assets/dice_3.png';
	case 4:
	return './assets/dice_4.png';
	case 5:
	return './assets/dice_5.png';
	case 6:
	return './assets/dice_6.png';
	default:
	return './assets/empty_dice.png';
	}
	}

	void _rollDice() {
	const _snackBar = SnackBar(
	content: Text('Rolling...'),
	duration: Duration(milliseconds: 300),
	);
	setState(() {
	_dice = r.nextInt(6) + 1;
	});
	Scaffold.of(context).showSnackBar(_snackBar);
	}

	void _countUp() {
	setState(() {
	_dice = _dice < 6 ? _dice + 1 : _dice;
	});
	}

	void _resetDice() {
	setState(() {
	_dice = 0;
	});
	}

	@override
	Widget build(BuildContext context) {
	return Center(
	child: Column(
	mainAxisAlignment: MainAxisAlignment.center,
	children: <Widget>[
	Image.asset(
	determineImage(_dice),
	height: 300,
	width: 300,
	),
	ElevatedButton(
	child: Text('ROLL'),
	onPressed: _rollDice,
	),
	ElevatedButton(
	child: Text('COUNT UP'),
	onPressed: _countUp,
	),
	ElevatedButton(
	child: Text('RESET'),
	onPressed: _resetDice,
	),
	],
	),
	);
	}
	}