Flutter Barcode_scan plugin crashing App?
1,906
You're probably not adding the dependency in your AndroidManifest.xml
folder, The same issue I had, Just modify scanQR()
function.
Try this:
Future scanQR() async {
try {
String barcode;
await BarcodeScanner.scan().then((onValue) {
setState(() {
barcode = onValue.toString();
});
}).catchError((onError) {
print(onError);
});
setState(() => this.barcode = barcode);
} on PlatformException catch (e) {
if (e.code == BarcodeScanner.CameraAccessDenied) {
setState(() {
this.barcode = 'camera permission not granted!';
});
} else {
setState(() => this.barcode = 'Unknown error: $e');
}
} on FormatException {
setState(() => this.barcode = '(User returned)');
} catch (e) {
setState(() => this.barcode = 'Unknown error: $e');
}
}
Author by
Harshit Vadhera
Updated on December 10, 2022Comments
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Harshit Vadhera over 1 year
As Soon As I Click on The Camera Button The App Crashes.
It is not Asking For Any Permission Also.
I Have Included The Activity File in the Manifest Also
This is The Code I Am Using and The plugin I Am Using is
barcode_scan:
Even After Searching a Lot I Am Unable To get to The Problem. Help Would Be Appreciated.
class _AuditPage extends State<AuditPage>{ String result = "Scan The Barcode!"; Future _scanQR() async{ try{ String qrCode = await BarcodeScanner.scan(); setState(() { result = qrCode; }); }on PlatformException catch (ex){ if(ex.code==BarcodeScanner.CameraAccessDenied){ setState(() { result="Camera Permission Was Denied"; }); }else{ setState(() { result="Unknown Error $ex!"; }); } } on FormatException { setState(() { result = "You Pressed The Back Button Before Scanning"; }); } catch (ex){ setState(() { result="Unknown Error $ex!"; }); } } @override Widget build(BuildContext context) { return Scaffold( resizeToAvoidBottomPadding: false, appBar: AppBar( title: Text("Bhaifi"), ), drawer: DrawerPage(), body: Center( child:Text( result, ), ), floatingActionButton:FloatingActionButton.extended( icon: Icon(Icons.camera_alt), label: Text("Scan"), onPressed: _scanQR, ), floatingActionButtonLocation:FloatingActionButtonLocation.centerFloat, ); } }
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Francesco Iapicca about 5 yearsyou want to take a look to AndroidX issue: I had a similar situation, you can grab some code from this post: stackoverflow.com/questions/55223002/… not the solution or the updates, but my troubleshooting in the original post; I hope it helps
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Harshit Vadhera about 5 yearsThanks But Not Working
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Francesco Iapicca about 5 yearstry using the "old one": barcode_scan: ^0.0.8 , if doesn't work try without " ^ ": just "barcode_scan: 0.0.8"
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Viren V Varasadiya about 5 yearsdo not specify the version of barcode_scan it will tack suitable version for you.
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