flutter_package / mobile_scanner

Go to a project
Toggle navigation Toggle navigation pinning
Navaron Bracke
f3329659 1 parent 3f5ad4de

add analyze image sample

Inline Side-by-side
Showing 3 changed files with 135 additions and 76 deletions
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:mobile_scanner/mobile_scanner.dart';
class BarcodeScannerAnalyzeImage extends StatefulWidget {
const BarcodeScannerAnalyzeImage({super.key});
@override
State<BarcodeScannerAnalyzeImage> createState() =>
_BarcodeScannerAnalyzeImageState();
}
class _BarcodeScannerAnalyzeImageState
extends State<BarcodeScannerAnalyzeImage> {
final MobileScannerController _controller = MobileScannerController();
BarcodeCapture? _barcodeCapture;
Future<void> _analyzeImageFromFile() async {
try {
final XFile? file =
await ImagePicker().pickImage(source: ImageSource.gallery);
if (!mounted || file == null) {
return;
}
final BarcodeCapture? barcodeCapture =
await _controller.analyzeImage(file.path);
if (mounted) {
setState(() {
_barcodeCapture = barcodeCapture;
});
}
} catch (_) {}
}
@override
Widget build(BuildContext context) {
Widget label = const Text('Pick a file to detect barcode');
if (_barcodeCapture != null) {
label = Text(
_barcodeCapture?.barcodes.firstOrNull?.displayValue ??
'No barcode detected',
);
}
return Scaffold(
appBar: AppBar(title: const Text('Analyze image from file')),
body: Column(
children: [
Expanded(
child: Center(
child: ElevatedButton(
onPressed: kIsWeb ? null : _analyzeImageFromFile,
child: kIsWeb
? const Text('Analyze image is not supported on web')
: const Text('Choose file'),
),
),
),
Expanded(child: Center(child: label)),
],
),
);
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
}
... ...
import 'package:flutter/material.dart';
import 'package:mobile_scanner_example/barcode_scanner_analyze_image.dart';
import 'package:mobile_scanner_example/barcode_scanner_controller.dart';
import 'package:mobile_scanner_example/barcode_scanner_listview.dart';
import 'package:mobile_scanner_example/barcode_scanner_pageview.dart';
... ... @@ -20,95 +21,75 @@ void main() {
class MyHome extends StatelessWidget {
const MyHome({super.key});
Widget _buildItem(BuildContext context, String label, Widget page) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Center(
child: ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => page,
),
);
},
child: Text(label),
),
),
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('Mobile Scanner Example')),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceAround,
child: ListView(
children: [
ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => const BarcodeScannerSimple(),
),
);
},
child: const Text('MobileScanner Simple'),
_buildItem(
context,
'MobileScanner Simple',
const BarcodeScannerSimple(),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => const BarcodeScannerListView(),
),
);
},
child: const Text('MobileScanner with ListView'),
_buildItem(
context,
'MobileScanner with ListView',
const BarcodeScannerListView(),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => const BarcodeScannerWithController(),
),
);
},
child: const Text('MobileScanner with Controller'),
_buildItem(
context,
'MobileScanner with Controller',
const BarcodeScannerWithController(),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => const BarcodeScannerWithScanWindow(),
),
);
},
child: const Text('MobileScanner with ScanWindow'),
_buildItem(
context,
'MobileScanner with ScanWindow',
const BarcodeScannerWithScanWindow(),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => const BarcodeScannerReturningImage(),
),
);
},
child: const Text(
'MobileScanner with Controller (returning image)',
),
_buildItem(
context,
'MobileScanner with Controller (return image)',
const BarcodeScannerReturningImage(),
),
_buildItem(
context,
'MobileScanner with zoom slider',
const BarcodeScannerWithZoom(),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => const BarcodeScannerWithZoom(),
),
);
},
child: const Text('MobileScanner with zoom slider'),
_buildItem(
context,
'MobileScanner with PageView',
const BarcodeScannerPageView(),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => const BarcodeScannerPageView(),
),
);
},
child: const Text('MobileScanner pageView'),
_buildItem(
context,
'MobileScanner with Overlay',
const BarcodeScannerWithOverlay(),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => BarcodeScannerWithOverlay(),
),
);
},
child: const Text('MobileScanner with Overlay'),
_buildItem(
context,
'Analyze image from file',
const BarcodeScannerAnalyzeImage(),
),
],
),
... ...
... ... @@ -5,6 +5,8 @@ import 'package:mobile_scanner_example/scanner_button_widgets.dart';
import 'package:mobile_scanner_example/scanner_error_widget.dart';
class BarcodeScannerWithOverlay extends StatefulWidget {
const BarcodeScannerWithOverlay({super.key});
@override
_BarcodeScannerWithOverlayState createState() =>
_BarcodeScannerWithOverlayState();
... ...