flutter - 用前置摄像头录制视频时屏幕变暗变窄
问题描述
用前置摄像头录制视频时屏幕变得更暗更窄我尝试了很多但我没有任何解决它
视频录制是全屏的,脸变得很窄很黑。我试过给分辨率也很高但是后置摄像头工作正常
我正在使用相机插件,即:相机:^0.5.2+1
但是后置摄像头工作正常
import 'dart:async';
import 'dart:io';
import 'package:camera/camera.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:video_player/video_player.dart';
class CameraExampleHome extends StatefulWidget {
@override
_CameraExampleHomeState createState() {
return _CameraExampleHomeState();
}
}
/// Returns a suitable camera icon for [direction].
IconData getCameraLensIcon(CameraLensDirection direction) {
switch (direction) {
case CameraLensDirection.back:
return Icons.camera_rear;
case CameraLensDirection.front:
return Icons.camera_front;
case CameraLensDirection.external:
return Icons.camera;
}
throw ArgumentError('Unknown lens direction');
}
void logError(String code, String message) =>
print('Error: $code\nError Message: $message');
class _CameraExampleHomeState extends State<CameraExampleHome>
with WidgetsBindingObserver {
CameraController controller;
String imagePath;
String videoPath;
VideoPlayerController videoController;
VoidCallback videoPlayerListener;
bool enableAudio = true;
@override
void initState() {
super.initState();
WidgetsBinding.instance.addObserver(this);
}
@override
void dispose() {
WidgetsBinding.instance.removeObserver(this);
super.dispose();
}
@override
void didChangeAppLifecycleState(AppLifecycleState state) {
if (state == AppLifecycleState.inactive) {
controller?.dispose();
} else if (state == AppLifecycleState.resumed) {
if (controller != null) {
onNewCameraSelected(controller.description);
}
}
}
final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(
title: const Text('Camera example'),
),
body: Column(
children: <Widget>[
Expanded(
child: Container(
child: Padding(
padding: const EdgeInsets.all(1.0),
child: Center(
child: _cameraPreviewWidget(),
),
),
decoration: BoxDecoration(
color: Colors.black,
border: Border.all(
color: controller != null && controller.value.isRecordingVideo
? Colors.redAccent
: Colors.grey,
width: 3.0,
),
),
),
),
_captureControlRowWidget(),
_toggleAudioWidget(),
Padding(
padding: const EdgeInsets.all(5.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
_cameraTogglesRowWidget(),
_thumbnailWidget(),
],
),
),
],
),
);
}
/// Display the preview from the camera (or a message if the preview is not available).
Widget _cameraPreviewWidget() {
if (controller == null || !controller.value.isInitialized) {
return const Text(
'Tap a camera',
style: TextStyle(
color: Colors.white,
fontSize: 24.0,
fontWeight: FontWeight.w900,
),
);
} else {
return AspectRatio(
aspectRatio: controller.value.aspectRatio,
child: CameraPreview(controller),
);
}
}
/// Toggle recording audio
Widget _toggleAudioWidget() {
return Padding(
padding: const EdgeInsets.only(left: 25),
child: Row(
children: <Widget>[
const Text('Enable Audio:'),
Switch(
value: enableAudio,
onChanged: (bool value) {
enableAudio = value;
if (controller != null) {
onNewCameraSelected(controller.description);
}
},
),
],
),
);
}
/// Display the thumbnail of the captured image or video.
Widget _thumbnailWidget() {
return Expanded(
child: Align(
alignment: Alignment.centerRight,
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
videoController == null && imagePath == null
? Container()
: SizedBox(
child: (videoController == null)
? Image.file(File(imagePath))
: Container(
child: Center(
child: AspectRatio(
aspectRatio:
videoController.value.size != null
? videoController.value.aspectRatio
: 1.0,
child: VideoPlayer(videoController)),
),
decoration: BoxDecoration(
border: Border.all(color: Colors.pink)),
),
width: 64.0,
height: 64.0,
),
],
),
),
);
}
/// Display the control bar with buttons to take pictures and record videos.
Widget _captureControlRowWidget() {
return Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
IconButton(
icon: const Icon(Icons.camera_alt),
color: Colors.blue,
onPressed: controller != null &&
controller.value.isInitialized &&
!controller.value.isRecordingVideo
? onTakePictureButtonPressed
: null,
),
IconButton(
icon: const Icon(Icons.videocam),
color: Colors.blue,
onPressed: controller != null &&
controller.value.isInitialized &&
!controller.value.isRecordingVideo
? onVideoRecordButtonPressed
: null,
),
IconButton(
icon: const Icon(Icons.stop),
color: Colors.red,
onPressed: controller != null &&
controller.value.isInitialized &&
controller.value.isRecordingVideo
? onStopButtonPressed
: null,
)
],
);
}
/// Display a row of toggle to select the camera (or a message if no camera is available).
Widget _cameraTogglesRowWidget() {
final List<Widget> toggles = <Widget>[];
if (cameras.isEmpty) {
return const Text('No camera found');
} else {
for (CameraDescription cameraDescription in cameras) {
toggles.add(
SizedBox(
width: 90.0,
child: RadioListTile<CameraDescription>(
title: Icon(getCameraLensIcon(cameraDescription.lensDirection)),
groupValue: controller?.description,
value: cameraDescription,
onChanged: controller != null && controller.value.isRecordingVideo
? null
: onNewCameraSelected,
),
),
);
}
}
return Row(children: toggles);
}
String timestamp() => DateTime.now().millisecondsSinceEpoch.toString();
void showInSnackBar(String message) {
_scaffoldKey.currentState.showSnackBar(SnackBar(content: Text(message)));
}
void onNewCameraSelected(CameraDescription cameraDescription) async {
if (controller != null) {
await controller.dispose();
}
controller = CameraController(
cameraDescription,
ResolutionPreset.high,
enableAudio: enableAudio,
);
// If the controller is updated then update the UI.
controller.addListener(() {
if (mounted) setState(() {});
if (controller.value.hasError) {
showInSnackBar('Camera error ${controller.value.errorDescription}');
}
});
try {
await controller.initialize();
} on CameraException catch (e) {
_showCameraException(e);
}
if (mounted) {
setState(() {});
}
}
void onTakePictureButtonPressed() {
takePicture().then((String filePath) {
if (mounted) {
setState(() {
imagePath = filePath;
videoController?.dispose();
videoController = null;
});
if (filePath != null) showInSnackBar('Picture saved to $filePath');
}
});
}
void onVideoRecordButtonPressed() {
startVideoRecording().then((String filePath) {
if (mounted) setState(() {});
if (filePath != null) showInSnackBar('Saving video to $filePath');
});
}
void onStopButtonPressed() {
stopVideoRecording().then((_) {
if (mounted) setState(() {});
showInSnackBar('Video recorded to: $videoPath');
});
}
Future<String> startVideoRecording() async {
if (!controller.value.isInitialized) {
showInSnackBar('Error: select a camera first.');
return null;
}
final Directory extDir = await getApplicationDocumentsDirectory();
final String dirPath = '${extDir.path}/Movies/flutter_test';
await Directory(dirPath).create(recursive: true);
final String filePath = '$dirPath/${timestamp()}.mp4';
if (controller.value.isRecordingVideo) {
// A recording is already started, do nothing.
return null;
}
try {
videoPath = filePath;
await controller.startVideoRecording(filePath);
} on CameraException catch (e) {
_showCameraException(e);
return null;
}
return filePath;
}
Future<void> stopVideoRecording() async {
if (!controller.value.isRecordingVideo) {
return null;
}
try {
await controller.stopVideoRecording();
} on CameraException catch (e) {
_showCameraException(e);
return null;
}
await _startVideoPlayer();
}
Future<void> _startVideoPlayer() async {
final VideoPlayerController vcontroller =
VideoPlayerController.file(File(videoPath));
videoPlayerListener = () {
if (videoController != null && videoController.value.size != null) {
// Refreshing the state to update video player with the correct ratio.
if (mounted) setState(() {});
videoController.removeListener(videoPlayerListener);
}
};
vcontroller.addListener(videoPlayerListener);
await vcontroller.setLooping(true);
await vcontroller.initialize();
await videoController?.dispose();
if (mounted) {
setState(() {
imagePath = null;
videoController = vcontroller;
});
}
await vcontroller.play();
}
Future<String> takePicture() async {
if (!controller.value.isInitialized) {
showInSnackBar('Error: select a camera first.');
return null;
}
final Directory extDir = await getApplicationDocumentsDirectory();
final String dirPath = '${extDir.path}/Pictures/flutter_test';
await Directory(dirPath).create(recursive: true);
final String filePath = '$dirPath/${timestamp()}.jpg';
if (controller.value.isTakingPicture) {
// A capture is already pending, do nothing.
return null;
}
try {
await controller.takePicture(filePath);
} on CameraException catch (e) {
_showCameraException(e);
return null;
}
return filePath;
}
void _showCameraException(CameraException e) {
logError(e.code, e.description);
showInSnackBar('Error: ${e.code}\n${e.description}');
}
}
class CameraApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: CameraExampleHome(),
);
}
}
List<CameraDescription> cameras;
Future<void> main() async {
// Fetch the available cameras before initializing the app.
try {
cameras = await availableCameras();
} on CameraException catch (e) {
logError(e.code, e.description);
}
runApp(CameraApp());
}
解决方案
我已经在 Nexus 6 模拟器中尝试过您的示例,这是输出:
似乎前后摄像头被拉伸了。我在 GitHub 中发现了这个问题,你也遇到了同样的问题。您可以尝试其他示例。此外,我还看到 Camera Plugin 背后的团队正在对上述插件进行重构。
我玩过你的代码并实现了我在这里找到的解决方案。这可能是一些补救措施,但可能会有更好的解决方案。
从部分:
Widget _cameraPreviewWidget() {
if (controller == null || !controller.value.isInitialized) {
return const Text(
'Tap a camera',
style: TextStyle(
color: Colors.white,
fontSize: 24.0,
fontWeight: FontWeight.w900,
),
);
} else {
return AspectRatio(
aspectRatio: controller.value.aspectRatio,
child: CameraPreview(controller),
);
}
}
我已经从引用的SO 帖子中应用了这个修复:
Widget cameraWidget(context) {
var camera = _cameraController.value;
// fetch screen size
final size = MediaQuery.of(context).size;
// calculate scale depending on screen and camera ratios
// this is actually size.aspectRatio / (1 / camera.aspectRatio)
// because camera preview size is received as landscape
// but we're calculating for portrait orientation
var scale = size.aspectRatio * camera.aspectRatio;
// to prevent scaling down, invert the value
if (scale < 1) scale = 1 / scale;
return Transform.scale(
scale: scale,
child: Center(
child: CameraPreview(_cameraController),
),
);
}
由于我使用的是当前版本的相机 0.8.0,因此我考虑了高于 0.7.0 版本的给定解决方案。
这里是示例代码:
import 'dart:async';
import 'dart:io';
import 'package:camera/camera.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:video_player/video_player.dart';
class CameraExampleHome extends StatefulWidget {
@override
_CameraExampleHomeState createState() {
return _CameraExampleHomeState();
}
}
/// Returns a suitable camera icon for [direction].
IconData getCameraLensIcon(CameraLensDirection direction) {
switch (direction) {
case CameraLensDirection.back:
return Icons.camera_rear;
case CameraLensDirection.front:
return Icons.camera_front;
case CameraLensDirection.external:
return Icons.camera;
}
throw ArgumentError('Unknown lens direction');
}
void logError(String code, String message) =>
print('Error: $code\nError Message: $message');
class _CameraExampleHomeState extends State<CameraExampleHome>
with WidgetsBindingObserver {
CameraController controller;
String imagePath;
String videoPath;
VideoPlayerController videoController;
VoidCallback videoPlayerListener;
bool enableAudio = true;
@override
void initState() {
super.initState();
WidgetsBinding.instance.addObserver(this);
}
@override
void dispose() {
WidgetsBinding.instance.removeObserver(this);
super.dispose();
}
@override
void didChangeAppLifecycleState(AppLifecycleState state) {
if (state == AppLifecycleState.inactive) {
controller?.dispose();
} else if (state == AppLifecycleState.resumed) {
if (controller != null) {
onNewCameraSelected(controller.description);
}
}
}
final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(
title: const Text('Camera example'),
),
body: Column(
children: <Widget>[
Expanded(
child: Container(
child: Padding(
padding: const EdgeInsets.all(1.0),
child: Center(
child: _cameraPreviewWidget(),
),
),
decoration: BoxDecoration(
color: Colors.black,
border: Border.all(
color: controller != null && controller.value.isRecordingVideo
? Colors.redAccent
: Colors.grey,
width: 3.0,
),
),
),
),
_captureControlRowWidget(),
_toggleAudioWidget(),
Padding(
padding: const EdgeInsets.all(5.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
_cameraTogglesRowWidget(),
_thumbnailWidget(),
],
),
),
],
),
);
}
/// Display the preview from the camera (or a message if the preview is not available).
Widget _cameraPreviewWidget() {
var camera = controller.value;
final size = MediaQuery.of(context).size;
var scale = size.aspectRatio * camera.aspectRatio;
if (scale < 1) scale = 1 / scale;
if (controller == null || !controller.value.isInitialized) {
return const Text(
'Tap a camera',
style: TextStyle(
color: Colors.white,
fontSize: 24.0,
fontWeight: FontWeight.w900,
),
);
} else {
return Transform.scale(
scale: scale,
child: Center(
child: CameraPreview(controller),
),
);
}
}
/// Toggle recording audio
Widget _toggleAudioWidget() {
return Padding(
padding: const EdgeInsets.only(left: 25),
child: Row(
children: <Widget>[
const Text('Enable Audio:'),
Switch(
value: enableAudio,
onChanged: (bool value) {
enableAudio = value;
if (controller != null) {
onNewCameraSelected(controller.description);
}
},
),
],
),
);
}
/// Display the thumbnail of the captured image or video.
Widget _thumbnailWidget() {
return Expanded(
child: Align(
alignment: Alignment.centerRight,
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
videoController == null && imagePath == null
? Container()
: SizedBox(
child: (videoController == null)
? Image.file(File(imagePath))
: Container(
child: Center(
child: AspectRatio(
aspectRatio:
videoController.value.size != null
? videoController.value.aspectRatio
: 1.0,
child: VideoPlayer(videoController)),
),
decoration: BoxDecoration(
border: Border.all(color: Colors.pink)),
),
width: 64.0,
height: 64.0,
),
],
),
),
);
}
/// Display the control bar with buttons to take pictures and record videos.
Widget _captureControlRowWidget() {
return Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
IconButton(
icon: const Icon(Icons.camera_alt),
color: Colors.blue,
onPressed: controller != null &&
controller.value.isInitialized &&
!controller.value.isRecordingVideo
? onTakePictureButtonPressed
: null,
),
IconButton(
icon: const Icon(Icons.videocam),
color: Colors.blue,
onPressed: controller != null &&
controller.value.isInitialized &&
!controller.value.isRecordingVideo
? onVideoRecordButtonPressed
: null,
),
IconButton(
icon: const Icon(Icons.stop),
color: Colors.red,
onPressed: controller != null &&
controller.value.isInitialized &&
controller.value.isRecordingVideo
? onStopButtonPressed
: null,
)
],
);
}
/// Display a row of toggle to select the camera (or a message if no camera is available).
Widget _cameraTogglesRowWidget() {
final List<Widget> toggles = <Widget>[];
if (cameras.isEmpty) {
return const Text('No camera found');
} else {
for (CameraDescription cameraDescription in cameras) {
toggles.add(
SizedBox(
width: 90.0,
child: RadioListTile<CameraDescription>(
title: Icon(getCameraLensIcon(cameraDescription.lensDirection)),
groupValue: controller?.description,
value: cameraDescription,
onChanged: controller != null && controller.value.isRecordingVideo
? null
: onNewCameraSelected,
),
),
);
}
}
return Row(children: toggles);
}
String timestamp() => DateTime.now().millisecondsSinceEpoch.toString();
void showInSnackBar(String message) {
_scaffoldKey.currentState.showSnackBar(SnackBar(content: Text(message)));
}
void onNewCameraSelected(CameraDescription cameraDescription) async {
if (controller != null) {
await controller.dispose();
}
controller = CameraController(
cameraDescription,
ResolutionPreset.high,
enableAudio: enableAudio,
);
// If the controller is updated then update the UI.
controller.addListener(() {
if (mounted) setState(() {});
if (controller.value.hasError) {
showInSnackBar('Camera error ${controller.value.errorDescription}');
}
});
try {
await controller.initialize();
} on CameraException catch (e) {
_showCameraException(e);
}
if (mounted) {
setState(() {});
}
}
void onTakePictureButtonPressed() {
takePicture().then((String filePath) {
if (mounted) {
setState(() {
imagePath = filePath;
videoController?.dispose();
videoController = null;
});
if (filePath != null) showInSnackBar('Picture saved to $filePath');
}
});
}
void onVideoRecordButtonPressed() {
startVideoRecording().then((String filePath) {
if (mounted) setState(() {});
if (filePath != null) showInSnackBar('Saving video to $filePath');
});
}
void onStopButtonPressed() {
stopVideoRecording().then((_) {
if (mounted) setState(() {});
showInSnackBar('Video recorded to: $videoPath');
});
}
Future<String> startVideoRecording() async {
if (!controller.value.isInitialized) {
showInSnackBar('Error: select a camera first.');
return null;
}
final Directory extDir = await getApplicationDocumentsDirectory();
final String dirPath = '${extDir.path}/Movies/flutter_test';
await Directory(dirPath).create(recursive: true);
final String filePath = '$dirPath/${timestamp()}.mp4';
if (controller.value.isRecordingVideo) {
// A recording is already started, do nothing.
return null;
}
try {
videoPath = filePath;
await controller.startVideoRecording();
} on CameraException catch (e) {
_showCameraException(e);
return null;
}
return filePath;
}
Future<void> stopVideoRecording() async {
if (!controller.value.isRecordingVideo) {
return null;
}
try {
await controller.stopVideoRecording();
} on CameraException catch (e) {
_showCameraException(e);
return null;
}
await _startVideoPlayer();
}
Future<void> _startVideoPlayer() async {
final VideoPlayerController vcontroller =
VideoPlayerController.file(File(videoPath));
videoPlayerListener = () {
if (videoController != null && videoController.value.size != null) {
// Refreshing the state to update video player with the correct ratio.
if (mounted) setState(() {});
videoController.removeListener(videoPlayerListener);
}
};
vcontroller.addListener(videoPlayerListener);
await vcontroller.setLooping(true);
await vcontroller.initialize();
await videoController?.dispose();
if (mounted) {
setState(() {
imagePath = null;
videoController = vcontroller;
});
}
await vcontroller.play();
}
Future<String> takePicture() async {
if (!controller.value.isInitialized) {
showInSnackBar('Error: select a camera first.');
return null;
}
final Directory extDir = await getApplicationDocumentsDirectory();
final String dirPath = '${extDir.path}/Pictures/flutter_test';
await Directory(dirPath).create(recursive: true);
final String filePath = '$dirPath/${timestamp()}.jpg';
if (controller.value.isTakingPicture) {
// A capture is already pending, do nothing.
return null;
}
try {
await controller.takePicture();
} on CameraException catch (e) {
_showCameraException(e);
return null;
}
return filePath;
}
void _showCameraException(CameraException e) {
logError(e.code, e.description);
showInSnackBar('Error: ${e.code}\n${e.description}');
}
}
class CameraApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: CameraExampleHome(),
);
}
}
List<CameraDescription> cameras;
Future<void> main() async {
WidgetsFlutterBinding.ensureInitialized();
// Fetch the available cameras before initializing the app.
try {
cameras = await availableCameras();
} on CameraException catch (e) {
logError(e.code, e.description);
}
runApp(CameraApp());
}
和实际输出:
比较我对您的代码进行一些调整之前和之后的相机预览,它似乎适用于您当前的场景。您只需要考虑相机的计算进行一些调整aspectRatio
。
您还可以更新您的帖子并添加一些示例输出,以便我们检查此解决方案是否适合。
除了上述解决方案之外,还有更灵活的解决方案,因为许多设备的分辨率和尺寸可能会有所不同。特别是如果您尝试为 Android 和 iOS 构建。
- 选择要使用的纵横比。
- 寻找最接近这个比率的分辨率。
- 在包含在Column小部件中的Expanded小部件中显示预览。
但是,如果相机插件仅提供CameraPreview
小部件,这可能会更加困难。您可以通过从方法中Texture
提取来创建自己的小部件来解决此问题。cameraId
Controller.buildPreview()
它可能类似于下面的代码。但是,我注意到相机插件仍然存在仅提供 4/5 分辨率的限制。因此,最接近的分辨率desiredRatio
可能最终质量很低。
class CameraApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: MyCameraHome(),
);
}
}
class MyCameraHome extends StatefulWidget {
@override
State<StatefulWidget> createState() {
return MyCameraHomeState();
}
}
class MyCameraHomeState extends State<MyCameraHome> {
static final double _desiredAspectRatio = 1.78;
late final CameraController _controller;
Widget _previewWidget = Container();
@override
void initState() {
super.initState();
print(_closestResolutionPreset());
_controller = CameraController(cameras[0], _closestResolutionPreset());
_controller.initialize().then((_) {
if (!mounted) {
return;
}
_buildPreviewWidget();
});
}
ResolutionPreset _closestResolutionPreset() {
final Map<ResolutionPreset, double> ratios = <ResolutionPreset, double>{
ResolutionPreset.low: defaultTargetPlatform == TargetPlatform.android
? 320 / 240
: 352 / 288,
ResolutionPreset.medium: defaultTargetPlatform == TargetPlatform.android
? 720 / 480
: 640 / 480,
ResolutionPreset.high: 1280 / 720,
ResolutionPreset.veryHigh: 1920 / 1080,
};
double smallestDifference = 1000;
late ResolutionPreset resultPreset;
for (MapEntry<ResolutionPreset, double> ratio in ratios.entries) {
final double newDifference = (ratio.value - _desiredAspectRatio).abs();
if (newDifference < smallestDifference) {
resultPreset = ratio.key;
smallestDifference = newDifference;
}
}
return resultPreset;
}
void _buildPreviewWidget() {
Widget previewWidget = _controller.buildPreview();
setState(() => _previewWidget = previewWidget);
}
Widget _buildPictureButton() {
return InkResponse(
onTap: () {
//_takePicture();
//_recordAVideo();
},
child: Container(
width: 65,
height: 65,
decoration: BoxDecoration(
color: Colors.white,
shape: BoxShape.circle,
border: Border.all(color: Colors.grey, width: 2)),
child: const Icon(
Icons.camera,
color: Colors.grey,
size: 60,
),
),
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Column(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Expanded(
child: Container(
decoration: const BoxDecoration(color: Colors.black),
child: _previewWidget,
),
),
Container(
decoration: const BoxDecoration(color: Colors.black),
padding: const EdgeInsets.only(
bottom: 30,
left: 10,
right: 10,
top: 15,
),
child: Stack(
children: <Widget>[
Container(
margin: const EdgeInsets.only(top: 10),
alignment: Alignment.centerLeft,
child: IconButton(
icon: const Icon(
Icons.switch_camera,
color: Colors.white,
size: 32,
),
onPressed: () {} //_toggleLensDirection,
),
),
Container(
alignment: Alignment.center,
child: _buildPictureButton(),
)
],
),
),
],
),
);
}
}
List<CameraDescription> cameras = [];
Future<void> main() async {
// Fetch the available cameras before initializing the app.
try {
WidgetsFlutterBinding.ensureInitialized();
cameras = await availableCameras();
} on CameraException catch (e) {
logError(e.code, e.description);
}
runApp(CameraApp());
}
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