[camera] [android]CameraX doesn't release resources (DeviceOrientation) #166529
Description
Steps to reproduce
render a WebcamScreenshot("") than exit the app
Dependencies from pubspec.lock:
camera:
dependency: "direct main"
description:
name: camera
sha256: "413d2b34fe28496c35c69ede5b232fb9dd5ca2c3a4cb606b14efc1c7546cc8cb"
url: "https://pub.dev"
source: hosted
version: "0.11.1"
camera_android_camerax:
dependency: transitive
description:
name: camera_android_camerax
sha256: "13784f539c7f104766bff84e4479a70f03b29d78b208278be45c939250d9d7f5"
url: "https://pub.dev"
source: hosted
version: "0.6.14+1"
image:
dependency: "direct main"
description:
name: image
sha256: "4e973fcf4caae1a4be2fa0a13157aa38a8f9cb049db6529aa00b4d71abc4d928"
url: "https://pub.dev"
source: hosted
version: "4.5.4"
Expected results
No exceptions or warnings
Actual results
I get a leaked IntentReceiver io.flutter.plugins.camerax.DeviceOrientationManager when i close the app
Code sample
Code sample
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:camera/camera.dart';
import 'package:image/image.dart' as img;
void main() {
WidgetsFlutterBinding.ensureInitialized();
runApp(const MainApp());
}
class MainApp extends StatelessWidget {
const MainApp({super.key});
@override
Widget build(BuildContext context) {
return const MaterialApp(home: WebcamScreenshot(codiceFiscale: ""));
}
}
class WebcamScreenshot extends StatefulWidget {
final String codiceFiscale;
const WebcamScreenshot({Key? key, required this.codiceFiscale})
: super(key: key);
@override
_WebcamScreenshotState createState() => _WebcamScreenshotState();
}
class _WebcamScreenshotState extends State<WebcamScreenshot> {
CameraController? _controller;
List<CameraDescription>? _cameras;
Uint8List? _imageBytes; // Memorizza l'immagine in memoria
//ApiService apiService = ApiService();
@override
void initState() {
super.initState();
_initCamera();
}
Future<void> _initCamera() async {
_cameras = await availableCameras();
_controller = CameraController(_cameras!.last, ResolutionPreset.medium);
await _controller!.initialize();
if (!mounted) return;
setState(() {}); // Aggiorna la UI dopo l'inizializzazione
}
Uint8List? _cropCenterSquare(Uint8List imageBytes) {
img.Image? image = img.decodeImage(
imageBytes,
); // Decodifica in formato gestibile
if (image == null) return null;
int size =
image.width < image.height
? image.width
: image.height; // Lato del quadrato
int offsetX = (image.width - size) ~/ 2;
int offsetY = (image.height - size) ~/ 2;
img.Image cropped = img.copyCrop(
image,
x: offsetX,
y: offsetY,
width: size,
height: size,
);
return Uint8List.fromList(
img.encodePng(cropped),
); // Converte di nuovo in Uint8List
}
Future<void> _savePicture() async {
if (_imageBytes != null) {
//await apiService.uploadImage(_imageBytes!, widget.codiceFiscale);
}
Navigator.pop(context);
}
Future<void> _takeScreenshot() async {
if (_controller == null || !_controller!.value.isInitialized) return;
try {
XFile picture = await _controller!.takePicture();
Uint8List bytes = await picture.readAsBytes(); // Legge i byte in memoria
Uint8List? cropped = _cropCenterSquare(bytes);
_controller!.dispose();
setState(() {
if (cropped != null) {
_imageBytes = cropped;
} else {
_imageBytes = bytes;
}
});
} catch (e) {
print("Errore durante lo screenshot: $e");
}
}
@override
void dispose() {
_controller?.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text("Webcam Screenshot")),
body: SingleChildScrollView(
child: Column(
children: [
if (_imageBytes == null)
Padding(
padding: const EdgeInsets.all(8.0),
child:
_controller == null || !_controller!.value.isInitialized
? Center(child: CircularProgressIndicator())
: Stack(
children: [
CameraPreview(_controller!),
Positioned.fill(
child: CustomPaint(painter: MaskPainter()),
),
],
),
),
if (_imageBytes != null)
Padding(
padding: const EdgeInsets.all(8.0),
child: Center(
child: Image.memory(_imageBytes!),
), // Mostra l'immagine dalla memoria
),
ElevatedButton(
onPressed: _imageBytes == null ? _takeScreenshot : _savePicture,
child:
_imageBytes == null
? Text("Scatta Screenshot")
: Text("Salva Immagine"),
),
if (_imageBytes != null)
ElevatedButton(
onPressed:
() => {
_initCamera().then(
(value) => {
setState(() {
_imageBytes = null;
}),
},
),
},
child: Text("rifai"),
),
],
),
),
);
}
}
class MaskPainter extends CustomPainter {
@override
void paint(Canvas canvas, Size size) {
double squareSize = size.width * 0.6; // Dimensione del quadrato
double left = (size.width - squareSize) / 2;
double top = (size.height - squareSize) / 2;
Paint paint = Paint()..color = Color.fromRGBO(0, 0, 0, 0.5);
Path path =
Path()
..fillType =
PathFillType
.evenOdd // 🔥 Chiave per il ritaglio corretto!
..addRect(Rect.fromLTWH(0, 0, size.width, size.height)) // Sfondo nero
..addRect(
Rect.fromLTWH(left, top, squareSize, squareSize),
); // Foro centrale
canvas.drawPath(path, paint);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) => false;
}
Screenshots or Video
Screenshots / Video demonstration
[Upload media here]
Logs
Logs
E/ActivityThread(19939): android.app.IntentReceiverLeaked: Activity com.example.bug.MainActivity has leaked IntentReceiver io.flutter.plugins.camerax.DeviceOrientationManager$1@7aee2ee that was originally registered here. Are you missing a call to unregisterReceiver()?
E/ActivityThread(19939): at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:1980)
E/ActivityThread(19939): at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:1690)
E/ActivityThread(19939): at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:1901)
E/ActivityThread(19939): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1853)
E/ActivityThread(19939): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1841)
E/ActivityThread(19939): at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:772)
E/ActivityThread(19939): at io.flutter.plugins.camerax.DeviceOrientationManager.start(DeviceOrientationManager.java:73)
E/ActivityThread(19939): at io.flutter.plugins.camerax.DeviceOrientationManagerHostApiImpl.startListeningForDeviceOrientationChange(DeviceOrientationManagerHostApiImpl.java:65)
E/ActivityThread(19939): at io.flutter.plugins.camerax.GeneratedCameraXLibrary$DeviceOrientationManagerHostApi$-CC.lambda$setup$0(GeneratedCameraXLibrary.java:1580)
E/ActivityThread(19939): at io.flutter.plugins.camerax.GeneratedCameraXLibrary$DeviceOrientationManagerHostApi$$ExternalSyntheticLambda0.onMessage(D8$$SyntheticClass:0)
E/ActivityThread(19939): at io.flutter.plugin.common.BasicMessageChannel$IncomingMessageHandler.onMessage(BasicMessageChannel.java:261)
E/ActivityThread(19939): at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:292)
E/ActivityThread(19939): at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:319)
E/ActivityThread(19939): at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(D8$$SyntheticClass:0)
E/ActivityThread(19939): at android.os.Handler.handleCallback(Handler.java:958)
E/ActivityThread(19939): at android.os.Handler.dispatchMessage(Handler.java:99)
E/ActivityThread(19939): at android.os.Looper.loopOnce(Looper.java:230)
E/ActivityThread(19939): at android.os.Looper.loop(Looper.java:319)
E/ActivityThread(19939): at android.app.ActivityThread.main(ActivityThread.java:9063)
E/ActivityThread(19939): at java.lang.reflect.Method.invoke(Native Method)
E/ActivityThread(19939): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:588)
E/ActivityThread(19939): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1103)
Flutter Doctor output
Doctor output
[√] Flutter (Channel stable, 3.29.2, on Microsoft Windows [Versione 10.0.26100.3624], locale it-IT) [343ms]
• Flutter version 3.29.2 on channel stable at C:\Users\steev\Documents\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision c236373904 (3 weeks ago), 2025-03-13 16:17:06 -0400
• Engine revision 18b71d647a
• Dart version 3.7.2
• DevTools version 2.42.3
[√] Windows Version (11 Home 64-bit, 24H2, 2009) [5,3s]
[√] Android toolchain - develop for Android devices (Android SDK version 35.0.1) [7,2s]
• Android SDK at C:\Users\steev\AppData\Local\Android\sdk
• Platform android-35, build-tools 35.0.1
• Java binary at: C:\Program Files\Android\Android Studio\jbr\bin\java
This is the JDK bundled with the latest Android Studio installation on this machine.
To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
• Java version OpenJDK Runtime Environment (build 21.0.5+-12932927-b750.29)
• All Android licenses accepted.
[√] Chrome - develop for the web [14ms]
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[X] Visual Studio - develop Windows apps [13ms]
X Visual Studio not installed; this is necessary to develop Windows apps.
Download at https://visualstudio.microsoft.com/downloads/.
Please install the "Desktop development with C++" workload, including all of its default components
[√] Android Studio (version 2024.3) [11ms]
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 21.0.5+-12932927-b750.29)
[√] VS Code (version 1.98.2) [10ms]
• VS Code at C:\Users\steev\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.108.0
[√] Connected device (5 available) [1.644ms]
• SM S901B (mobile) • 192.168.1.55:38845 • android-arm64 • Android 14 (API 34)
• SM S901B (wireless) (mobile) • adb-RFCT7118NZN-Nu1yXK._adb-tls-connect._tcp • android-arm64 • Android 14 (API 34)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Versione 10.0.26100.3624]
• Chrome (web) • chrome • web-javascript • Google Chrome 134.0.6998.178
• Edge (web) • edge • web-javascript • Microsoft Edge 134.0.3124.93
[√] Network resources [567ms]
• All expected network resources are available.
! Doctor found issues in 1 category.