Created
January 14, 2019 10:56
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| class ScreenOne extends StatefulWidget { | |
| @override | |
| _ScreenOneState createState() => _ScreenOneState(); | |
| } | |
| class _ScreenOneState extends State<ScreenOne> with WidgetsBindingObserver { | |
| String _platformVersion = 'Unknown'; | |
| String _statusMessage = "waiting for camera permission"; | |
| Permission permission; | |
| @override | |
| void initState() { | |
| super.initState(); | |
| initPlatformState(); | |
| WidgetsBinding.instance.addObserver(this); | |
| requestPermission(); | |
| } | |
| initPlatformState() async { | |
| String platformVersion; | |
| try { | |
| platformVersion = await SimplePermissions.platformVersion; | |
| } on PlatformException { | |
| platformVersion = 'Failed to get platform version.'; | |
| } | |
| if (!mounted) return; | |
| setState(() { | |
| _platformVersion = platformVersion; | |
| }); | |
| } | |
| requestPermission() async { | |
| final res = await SimplePermissions.requestPermission(Permission.Camera); | |
| } | |
| checkPermission() async { | |
| bool res = await SimplePermissions.checkPermission(Permission.Camera); | |
| if (!res) { | |
| setState(() { | |
| _statusMessage = "waiting for camera permission"; | |
| }); | |
| } else { | |
| setState(() { | |
| _statusMessage = "camera permission has been granted"; | |
| }); | |
| } | |
| } | |
| getPermissionStatus() async { | |
| final res = await SimplePermissions.getPermissionStatus(Permission.Camera); | |
| } | |
| @override | |
| void didChangeAppLifecycleState(AppLifecycleState state) { | |
| checkPermission(); | |
| } | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| backgroundColor: Colors.white, | |
| appBar: AppBar( | |
| title: Text("Test page 1"), | |
| ), | |
| body: Center( | |
| child: Text(_statusMessage), | |
| ), | |
| ); | |
| } | |
| } |
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