Get Permission to Scan Barcodes on iOS with Flutter

Question

I'm using qr_code_scanner to scan barcodes in my Flutter app and it works fine for Android, but when I try to scan for iOS a pop-up appears and looks like:

I'm using the descriptions Flutter code that looks like the following:

QRView(
                        key: qrKey,
                        onQRViewCreated: (controller) => {
                              controller.scannedDataStream.listen((code) async {
                               ...
                              })
                            })

And in my Info.plist file I have the following fields:

<key>io.flutter.embedded_views_preview</key>
<true/>
<key>NSCameraUsageDescription</key>
<string>Camera permission is required to scan QR codes.</string>

However even with these settings set, I can't seem to figure out how to have access to the camera. Thanks for any help.

---

Update I followed @EvgeniyTrubilo suggestion and used permission_handler to request permission using the following code:

void getCameraPermission() async {
    print(await Permission.camera.status); // prints PermissionStatus.granted
    var status = await Permission.camera.status;
    if (!status.isGranted) {
      final result = await Permission.camera.request();
      if (result.isGranted) {
        setState(() {
          canShowQRScanner = true;
        });
      } else {
        Scaffold.of(context).showSnackBar(
            SnackBar(content: Text('Please enable camera to scan barcodes')));
        Navigator.of(context).pop();
      }
    } else {
      setState(() {
        canShowQRScanner = true;
      });
    }
  }

The first time this code was executed it successfully requested permission to access camera, and once permission was granted, the same error showed up. Sequential tries the print statement at the top of the above function said the Permission was granted??

---

Update 2x Just realized you can mock the camera in an iOS simulator like you can on Android. I will try this on an actual device and update.

Answer 1

You can use permission_handler. With this, you could ask for camera permission before build QRView. Of course, you should build QRView after camera permission is enabled. I'm not sure it would be right solution for your issue, but I think that would be an awesome improvement.