通过在AndroidManifest.xml文件中声明CAMERA权限并重新安装应用程序来解决此问题。以下是包含CAMERA权限声明和初始化相机的示例代码：

在AndroidManifest.xml文件中添加以下权限声明：

在您的Flutter代码中，使用以下代码初始化相机：

import 'package:camera/camera.dart';

void main() async { WidgetsFlutterBinding.ensureInitialized();

final cameras = await availableCameras(); final camera = cameras.first;

runApp( MaterialApp( theme: ThemeData.dark(), home: TakePictureScreen( // Pass the appropriate camera to the TakePictureScreen widget. camera: camera, ), ), ); }

class TakePictureScreen extends StatefulWidget { final CameraDescription camera;

const TakePictureScreen({ Key key, @required this.camera, }) : super(key: key);

@override TakePictureScreenState createState() => TakePictureScreenState(); }

class TakePictureScreenState extends State { CameraController _controller; Future _initializeControllerFuture;

@override void initState() { super.initState(); // To display the current output from the Camera, // create a CameraController. _controller = CameraController( // Get a specific camera from the list of available cameras. widget.camera, // Define the resolution to use. ResolutionPreset.high, );

// Next, initialize the controller. This returns a Future.
_initializeControllerFuture = _controller.initialize();

}

@override void dispose() { // Dispose of the controller when the widget is disposed. _controller.dispose(); super.dispose(); }

@override Widget build(BuildContext context) { return Scaffold( appBar: AppBar(title: Text('Take a picture')), // Wait until the controller is initialized before displaying the // camera preview. Use a FutureBuilder to display a loading spinner // until the controller has finished initializing. body: FutureBuilder( future: _initializeControllerFuture, builder: (context, snapshot) { if (snapshot.connectionState == ConnectionState.done) { // If the Future is complete, display the preview. return CameraPreview(_controller); } else { // Otherwise, display a loading indicator. return Center(child: CircularProgressIndicator()); } }, ), floatingActionButton: FloatingActionButton( child: Icon(Icons.camera_alt), // Provide an onPressed callback. onPressed: () async { // Take the Picture in a try / catch block. If anything goes wrong, //