Missing Features

[UkeHa]

Hi,

i've tried to use your plugin with MVVM and think there are some improvements out there.

• Timeout between Detections to prevent duplicate results. This would be useful if you use the result and parse it down in the Navigation. 500 ms ought to be enough as a default but a bindable property would be even better.
• Tap to Focus doesn't work on a local iOS device
• MVVM Bindings seem to be a bit broken. CameraFacing is ignored when bound and it's not easy to bind the command and still get the barcode. Perhaps it would be nicer to make the detection command bindable and return the detected barcodes as a separate property
• Is there a way to donate to you? This plugin has been the best to scan so far!

MVVM Example: RelayCommand to toggle CameraProperty

    public CameraPageViewModel1()
    {
        CameraFacing = CameraFacing.Front;
    }

        [ObservableProperty] private CameraFacing _cameraFacing;

    [RelayCommand]
    private void ToggleCamera()
    {
        CameraFacing = CameraFacing == CameraFacing.Front ? CameraFacing.Back : CameraFacing.Front;
    }

XAML:

    <AbsoluteLayout>
        <scanner:CameraView
            AbsoluteLayout.LayoutFlags="All"
            AbsoluteLayout.LayoutBounds="0,0,1,1"
            CaptureQuality="Highest"
            ForceInverted="False"
            TapToFocusEnabled="True"
            OnDetectionFinished="CameraView_OnDetectionFinished"
            CameraFacing="{Binding CameraFacing}"
            VibrationOnDetected="{Binding VibrateOnDetection}"
            BarcodeSymbologies="All"
            x:Name="Barcode"/>

        <GraphicsView
            AbsoluteLayout.LayoutFlags="All"
            AbsoluteLayout.LayoutBounds="0,0,1,1"
            x:Name="Graphics"
            InputTransparent="True"/>

        <Grid ColumnDefinitions="*, *" AbsoluteLayout.LayoutFlags="All" AbsoluteLayout.LayoutBounds="0,0,1,0.1">
            <Picker x:Name="Quality" Title="Quality" Grid.Column="2" BackgroundColor="Transparent"  WidthRequest="45" HeightRequest="45" SelectedIndexChanged="Quality_SelectedIndexChanged"/>

            <Button Text="C" Grid.Column="0" WidthRequest="50" HeightRequest="50" CornerRadius="25" Command="{Binding ToggleCameraCommand}"/>
            <Button Text="T" Grid.Column="1" WidthRequest="50" HeightRequest="50" CornerRadius="25" Clicked="TorchButton_Clicked"/>
        </Grid>
    </AbsoluteLayout>

The Constructor Camera facing front is being ignored.

[afriscic]

Hello and thank you for comments.

1. You can get duplication prevention and better recognition by setting "PoolingInterval" to some value in ms. The program should continue to scan in the background but should remove duplicates and return results at the end of each interval.
2. I haven't fully tested iOS. I have possible fix but it will be a couple of days, maybe a few weeks until i can push it. I'm still battling some health issues so I'm unable to work fully.
3. MVVM worked OK for me. I'll test it more, but any updates could come with .NET 8 update.
4. Didn't think about donations, it would be nice to add :P

[UkeHa]

Hey, no worries your library has been super helpful to us thus far. Oh, i also ran into another issue. The front camera of iPads don't work. You can't switch to them.

[afriscic]

Unfortunately I don't have an iPad to test and to find where the problem is. If you can do a pull request with code that would fix this and I'll merge it.

[geertgeerits]

The front camera on an iPad is working but you have to set the quality lower (on medium). Tested on an iPad 8, iOS version 17.1.1.

[afriscic]

I have implemented a resolution fallback for iOS devices so it should be fixed in the newest release.