Implement QR Code & Barcode Scanning with Camera.MAUI in .NET MAUI

Barcode Scanning in .NET MAUI

In this video, the speaker demonstrates how to scan barcodes in a .NET MAUI app using the Camera.MAUI plugin. The speaker shows how to implement barcode scanning and provides steps for setting up the plugin.

Setting Up the Plugin

• To set up the Camera.MAUI plugin, right-click on your project in Solution Explorer and select "Manage NuGet Packages."

• Install version 1.2.1 of the Camera.MAUI plugin.

• In your MauiProgram, add UseMauiCameraView to initialize the plugin. You will also need to add using CameraMaui.

• Add permissions for camera usage in each platform's folder (e.g., AndroidManifest.xml for Android).

Implementing Barcode Scanning

• Set BarcodeDetectionEnabled to true to enable barcode scanning.

• Use the BarcodeDetected event to detect when a barcode is scanned. This generates a new event in the code behind that can be used with MVVM as well by binding to BarcodeResults.

• Additional options include setting frame rate and more barcode options.

Adding a Label to Update the UI

In this section, the speaker discusses how to update the UI when a barcode is detected. They add a label to display the barcode result and use MainThread.BeginInvokeOnMainThread to ensure that the UI is updated on the main thread.

Adding a Label for Barcode Result

• Add a label with name "Barcode Result" and font size 20.

• Use MainThread.BeginInvokeOnMainThread to update UI on main thread.

Updating Label with Barcode Result

• Set text of label to args.Result.

• Use string interpolation to include barcode format in label text.

Customizing Camera View Options

In this section, the speaker discusses how to customize camera view options for barcode scanning using an object of type BarcodeOptions.

Setting Barcode Options

• Create new object of type BarcodeOptions.

• Customize options for barcode scanning using properties such as AutoRotate.

Barcode Scanner with Camera in .NET MAUI

In this section, the speaker discusses how to use the barcode scanner with camera in .NET MAUI plugin.

Setting up QR Code and Code 39 Scanning

• To only scan QR codes or Code 39, set it as an option.

• The rest of the options will be ignored.

• Hooking up that event and setting it to true makes it scanning already.

Other Barcode Scanning Options

• Pure barcode is another option but not sure what it means.

• Read multiple barcodes by looking at ZXing documentation.

• Try harder property tries harder to detect the barcode and invert colors for funky colored barcodes.

Comparison with Other Barcode Scanning Plugins

• Speaker has made videos on other plugins based on ZXing and Google Vision ML kit.

• This plugin seems more performant than other ZXing plugins.

• Some people mention that well-known ZXing plugin can't scan QR codes on certain devices.

Conclusion

In this section, the speaker concludes his discussion about using barcode scanner with camera in .NET MAUI plugin.

Final Thoughts

• Speaker recommends checking out repository for this plugin, starring it, and subscribing to his channel for more videos.

• If there are any problems, let him know down in the comments below.