- 1 year ago
How to add camera functionality in windows app using Project Reunion template for WinUI 3.0 desktop app?
To add camera functionality to a Windows app using the Project Reunion template for WinUI 3.0 desktop app, you can leverage the Windows.Media.Capture API. Here's a step-by-step guide:
Create a WinUI 3.0 Desktop App:
- Open Visual Studio and create a new project using the "Blank App, Packaged (WinUI 3 in Desktop)" template.
Add Required Capabilities:
- In the Package.appxmanifest file, add the necessary capabilities for camera access by including the following line within the
<Capabilities>
section:xml<DeviceCapability Name="webcam" />
- In the Package.appxmanifest file, add the necessary capabilities for camera access by including the following line within the
Implement Camera Functionality:
Open the MainPage.xaml file and design your UI with appropriate controls to preview and capture images from the camera.
In the MainPage.xaml.cs file, add the following code to handle camera functionality:
csharpusing Windows.Media.Capture;
using Windows.Storage;
using Windows.UI.Xaml.Media.Imaging;
private MediaCapture mediaCapture;
// Initialize camera and preview
private async Task InitializeCameraAsync()
{
mediaCapture = new MediaCapture();
await mediaCapture.InitializeAsync();
// Set the source of the CaptureElement control to preview the camera
captureElement.Source = mediaCapture;
await mediaCapture.StartPreviewAsync();
}
// Capture image from the camera
private async Task CaptureImageAsync()
{
var imageFile = await ApplicationData.Current.LocalFolder.CreateFileAsync("captured_image.jpg", CreationCollisionOption.GenerateUniqueName);
// Capture image to the specified file
await mediaCapture.CapturePhotoToStorageFileAsync(ImageEncodingProperties.CreateJpeg(), imageFile);
// Display the captured image
var bitmapImage = new BitmapImage();
using (var stream = await imageFile.OpenAsync(FileAccessMode.Read))
{
await bitmapImage.SetSourceAsync(stream);
}
capturedImage.Source = bitmapImage;
}
Initialize Camera and Preview:
- In the MainPage constructor or any appropriate event handler, call the
InitializeCameraAsync()
method to initialize the camera and preview the feed.
- In the MainPage constructor or any appropriate event handler, call the
Capture Image:
- Add a button or trigger to capture an image and call the
CaptureImageAsync()
method to capture and display the image.
- Add a button or trigger to capture an image and call the
Handle App Suspension:
- In the App.xaml.cs file, override the
OnSuspending
method and stop the camera preview to release the resources:csharpprotected override async void OnSuspending(object sender, SuspendingEventArgs e)
{
var deferral = e.SuspendingOperation.GetDeferral();
await mediaCapture.StopPreviewAsync();
deferral.Complete();
}
- In the App.xaml.cs file, override the
By following these steps, you can integrate camera functionality into your WinUI 3.0 desktop app using the Project Reunion template. You can preview the camera feed and capture images with the help of the MediaCapture
class from the Windows.Media.Capture namespace.