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Merge pull request #25 from juliansteenbakker/bug/navigation-dispose
bug: fix disposing controller
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:mobile_scanner/mobile_scanner.dart'; | ||
|
|
||
| class BarcodeScannerWithController extends StatefulWidget { | ||
| const BarcodeScannerWithController({Key? key}) : super(key: key); | ||
|
|
||
| @override | ||
| _BarcodeScannerWithControllerState createState() => | ||
| _BarcodeScannerWithControllerState(); | ||
| } | ||
|
|
||
| class _BarcodeScannerWithControllerState | ||
| extends State<BarcodeScannerWithController> | ||
| with SingleTickerProviderStateMixin { | ||
| String? barcode; | ||
|
|
||
| MobileScannerController controller = MobileScannerController( | ||
| torchEnabled: true, | ||
| // facing: CameraFacing.front, | ||
| ); | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return MaterialApp( | ||
| home: Scaffold( | ||
| backgroundColor: Colors.black, | ||
| body: Builder(builder: (context) { | ||
| return Stack( | ||
| children: [ | ||
| MobileScanner( | ||
| controller: controller, | ||
| fit: BoxFit.contain, | ||
| // controller: MobileScannerController( | ||
| // torchEnabled: true, | ||
| // facing: CameraFacing.front, | ||
| // ), | ||
| onDetect: (barcode, args) { | ||
| if (this.barcode != barcode.rawValue) { | ||
| setState(() { | ||
| this.barcode = barcode.rawValue; | ||
| }); | ||
| } | ||
| }), | ||
| Align( | ||
| alignment: Alignment.bottomCenter, | ||
| child: Container( | ||
| alignment: Alignment.bottomCenter, | ||
| height: 100, | ||
| color: Colors.black.withOpacity(0.4), | ||
| child: Row( | ||
| crossAxisAlignment: CrossAxisAlignment.center, | ||
| mainAxisAlignment: MainAxisAlignment.spaceEvenly, | ||
| children: [ | ||
| IconButton( | ||
| color: Colors.white, | ||
| icon: ValueListenableBuilder( | ||
| valueListenable: controller.torchState, | ||
| builder: (context, state, child) { | ||
| switch (state as TorchState) { | ||
| case TorchState.off: | ||
| return const Icon(Icons.flash_off, | ||
| color: Colors.grey); | ||
| case TorchState.on: | ||
| return const Icon(Icons.flash_on, | ||
| color: Colors.yellow); | ||
| } | ||
| }, | ||
| ), | ||
| iconSize: 32.0, | ||
| onPressed: () => controller.toggleTorch(), | ||
| ), | ||
| Center( | ||
| child: SizedBox( | ||
| width: MediaQuery.of(context).size.width - 120, | ||
| height: 50, | ||
| child: FittedBox( | ||
| child: Text( | ||
| barcode ?? 'Scan something!', | ||
| overflow: TextOverflow.fade, | ||
| style: Theme.of(context) | ||
| .textTheme | ||
| .headline4! | ||
| .copyWith(color: Colors.white), | ||
| ), | ||
| ), | ||
| ), | ||
| ), | ||
| IconButton( | ||
| color: Colors.white, | ||
| icon: ValueListenableBuilder( | ||
| valueListenable: controller.cameraFacingState, | ||
| builder: (context, state, child) { | ||
| switch (state as CameraFacing) { | ||
| case CameraFacing.front: | ||
| return const Icon(Icons.camera_front); | ||
| case CameraFacing.back: | ||
| return const Icon(Icons.camera_rear); | ||
| } | ||
| }, | ||
| ), | ||
| iconSize: 32.0, | ||
| onPressed: () => controller.switchCamera(), | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| ], | ||
| ); | ||
| }), | ||
| ), | ||
| ); | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:mobile_scanner/mobile_scanner.dart'; | ||
|
|
||
| class BarcodeScannerWithoutController extends StatefulWidget { | ||
| const BarcodeScannerWithoutController({Key? key}) : super(key: key); | ||
|
|
||
| @override | ||
| _BarcodeScannerWithoutControllerState createState() => | ||
| _BarcodeScannerWithoutControllerState(); | ||
| } | ||
|
|
||
| class _BarcodeScannerWithoutControllerState | ||
| extends State<BarcodeScannerWithoutController> | ||
| with SingleTickerProviderStateMixin { | ||
| String? barcode; | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return MaterialApp( | ||
| home: Scaffold( | ||
| backgroundColor: Colors.black, | ||
| body: Builder(builder: (context) { | ||
| return Stack( | ||
| children: [ | ||
| MobileScanner( | ||
| fit: BoxFit.contain, | ||
| onDetect: (barcode, args) { | ||
| if (this.barcode != barcode.rawValue) { | ||
| setState(() { | ||
| this.barcode = barcode.rawValue; | ||
| }); | ||
| } | ||
| }), | ||
| Align( | ||
| alignment: Alignment.bottomCenter, | ||
| child: Container( | ||
| alignment: Alignment.bottomCenter, | ||
| height: 100, | ||
| color: Colors.black.withOpacity(0.4), | ||
| child: Row( | ||
| crossAxisAlignment: CrossAxisAlignment.center, | ||
| mainAxisAlignment: MainAxisAlignment.spaceEvenly, | ||
| children: [ | ||
| Center( | ||
| child: SizedBox( | ||
| width: MediaQuery.of(context).size.width - 120, | ||
| height: 50, | ||
| child: FittedBox( | ||
| child: Text( | ||
| barcode ?? 'Scan something!', | ||
| overflow: TextOverflow.fade, | ||
| style: Theme.of(context) | ||
| .textTheme | ||
| .headline4! | ||
| .copyWith(color: Colors.white), | ||
| ), | ||
| ), | ||
| ), | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| ], | ||
| ); | ||
| }), | ||
| ), | ||
| ); | ||
| } | ||
| } |
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