Flutter error: Instance member 'takePicture' can't be accessed using static access - flutter

Question

I am a new developer and have just started using flutter. I was trying to make a camera app and I followed this tutorial:
https://www.youtube.com/watch?v=_nS00ZKnINQ
I am getting an error: Instance member 'takePicture' can't be accessed using static access.
You can view the entire file in this code block. Please don't hesitate to ask if you need the whole project directory.
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:path/path.dart';
import 'package:path_provider/path_provider.dart';
class CameraScreen extends StatefulWidget {
#override
_CameraScreenState createState() => _CameraScreenState();
}
class _CameraScreenState extends State<CameraScreen> {
CameraController cameraController;
List cameras;
int selectedCameraIndex;
String imgPath;
Future _initCameraController(CameraDescription cameraDescription) async {
if (cameraController != null) {
await cameraController.dispose();
}
cameraController =
CameraController(cameraDescription, ResolutionPreset.high);
cameraController.addListener(() {
if (mounted) {
setState(() {});
}
});
if (cameraController.value.hasError) {
print('!!!Camera error!!! ${cameraController.value.errorDescription}');
}
try {
await cameraController.initialize();
} on CameraException catch (e) {
_showCameraException(e);
}
if (mounted) {
setState(() {});
}
}
/// Display Camera Preview
Widget _cameraPreviewWidget() {
if (cameraController == null || cameraController.value.isInitialized) {
return const Text(
'Loading...',
style: TextStyle(
color: Colors.white,
fontSize: 20.0,
fontWeight: FontWeight.w900,
),
);
}
return AspectRatio(
aspectRatio: cameraController.value.aspectRatio,
child: CameraPreview(cameraController),
);
}
/// Display control bar with buttons to take picture
Widget _cameraControlWidget(context) {
return Expanded(
child: Align(
alignment: Alignment.center,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
FloatingActionButton(
child: Icon(
Icons.camera,
color: Colors.black,
),
backgroundColor: Colors.white,
onPressed: () {
_onCapturePressed(context);
})
],
),
));
}
/// Display a row of toggles to select the camera
Widget _cameraToggleRowWidget() {
if (cameras == null || cameras.isEmpty) {
return Spacer();
}
CameraDescription selectedCamera = cameras[selectedCameraIndex];
CameraLensDirection lensDirection = selectedCamera.lensDirection;
return Expanded(
child: Align(
alignment: Alignment.centerLeft,
child: FlatButton.icon(
onPressed: _onSwitchCamera,
icon: Icon(
_getCameraLensIcon(lensDirection),
color: Colors.white,
size: 24,
),
label: Text(
'${lensDirection.toString().substring(lensDirection.toString().indexOf('.') + 1).toUpperCase()}',
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w500,
),
)),
));
}
#override
Widget build(BuildContext context) {
// TODO: implement build
return null;
}
void _onSwitchCamera() {
selectedCameraIndex =
selectedCameraIndex < cameras.length - 1 ? selectedCameraIndex + 1 : 0;
CameraDescription selectedCamera = cameras[selectedCameraIndex];
_initCameraController(selectedCamera);
}
IconData _getCameraLensIcon(CameraLensDirection lensDirection) {
switch (lensDirection) {
case CameraLensDirection.back:
return CupertinoIcons.switch_camera;
case CameraLensDirection.front:
return CupertinoIcons.switch_camera_solid;
case CameraLensDirection.external:
return CupertinoIcons.photo_camera;
default:
return Icons.device_unknown;
}
}
}
void _onCapturePressed(context) async {
try {
final path =
join((await getTemporaryDirectory()).path, '${DateTime.now()}.png)');
await CameraController.takePicture(path);
} catch (e) {
_showCameraException(e);
}
}
void _showCameraException(CameraException e) {
String errorText = 'Error: ${e.code} \n Error Message: ${e.description}';
print(errorText);
}
I am using VS Code with Flutter on Windows 10

Answer 1

Do not call takePicture as a static method. You have to use your initialised controller:
cameraController.takePicture(path);
To access it, move your method _onCapturePressed into your class body. The working code from your tutorial can be found here.