main.dart
2.69 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
import 'package:flutter/material.dart';
import 'package:wakelock/wakelock.dart';
void main() {
runApp(WakelockExampleApp());
}
/// Example app widget demonstrating how to use the wakelock plugin.
///
/// The example implementation is located inside [OutlinedButton.onPressed]
/// callback functions and a [FutureBuilder].
class WakelockExampleApp extends StatefulWidget {
@override
_WakelockExampleAppState createState() => _WakelockExampleAppState();
}
class _WakelockExampleAppState extends State<WakelockExampleApp> {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Wakelock example app'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
const Spacer(
flex: 3,
),
OutlinedButton(
onPressed: () {
// The following code will enable the wakelock on the device
// using the wakelock plugin.
setState(() {
Wakelock.enable();
// You could also use Wakelock.toggle(on: true);
});
},
child: const Text('enable wakelock'),
),
const Spacer(),
OutlinedButton(
onPressed: () {
// The following code will disable the wakelock on the device
// using the wakelock plugin.
setState(() {
Wakelock.disable();
// You could also use Wakelock.toggle(on: false);
});
},
child: const Text('disable wakelock'),
),
const Spacer(
flex: 2,
),
FutureBuilder(
future: Wakelock.enabled,
builder: (context, AsyncSnapshot<bool> snapshot) {
final data = snapshot.data;
// The use of FutureBuilder is necessary here to await the
// bool value from the `enabled` getter.
if (data == null) {
// The Future is retrieved so fast that you will not be able
// to see any loading indicator.
return Container();
}
return Text('The wakelock is currently '
'${data ? 'enabled' : 'disabled'}.');
},
),
const Spacer(
flex: 3,
),
],
),
),
),
);
}
}