1. Widget build(BuildContext context) {
2. return Center(
3. child: Column(
4. mainAxisSize: MainAxisSize.min,
5. children: <Widget>[
6. const RaisedButton(
7. onPressed: null,
8. child: Text(
9. 'Disabled Button',
10. style: TextStyle(fontSize: 20)
11. ),
12. ),
13. const SizedBox(height: 30),
14. RaisedButton(
15. onPressed: () {},
16. child: const Text(
17. 'Enabled Button',
18. style: TextStyle(fontSize: 20)
19. ),
20. ),
21. const SizedBox(height: 30),
22. RaisedButton(
23. onPressed: () {},
24. textColor: Colors.white,
25. padding: const EdgeInsets.all(0.0),
26. child: Container(
27. decoration: const BoxDecoration(
28. gradient: LinearGradient(
29. colors: <Color>[
30. Color(0xFF0D47A1),
31. Color(0xFF1976D2),
32. Color(0xFF42A5F5),
33. ],
34. ),
35. ),
36. padding: const EdgeInsets.all(10.0),
37. child: const Text(
38. 'Gradient Button',
39. style: TextStyle(fontSize: 20)
40. ),
41. ),
42. ),
43. ],
44. ),
45. );
46. }

Widget build(BuildContext context) {
  return Center(
    child: Column(
      mainAxisSize: MainAxisSize.min,
      children: <Widget>[
        const RaisedButton(
          onPressed: null,
          child: Text(
            'Disabled Button',
            style: TextStyle(fontSize: 20)
          ),
        ),
        const SizedBox(height: 30),
        RaisedButton(
          onPressed: () {},
          child: const Text(
            'Enabled Button',
            style: TextStyle(fontSize: 20)
          ),
        ),
        const SizedBox(height: 30),
        RaisedButton(
          onPressed: () {},
          textColor: Colors.white,
          padding: const EdgeInsets.all(0.0),
          child: Container(
            decoration: const BoxDecoration(
              gradient: LinearGradient(
                colors: <Color>[
                  Color(0xFF0D47A1),
                  Color(0xFF1976D2),
                  Color(0xFF42A5F5),
                ],
              ),
            ),
            padding: const EdgeInsets.all(10.0),
            child: const Text(
              'Gradient Button',
              style: TextStyle(fontSize: 20)
            ),
          ),
        ),
      ],
    ),
  );
}