How to CameraView Stop Close Camera MVVM

[autoprog]

hi,

Example CameraView One page run.

my case MVVM , main_page and Camera_page problems.

I have the main page and I take photos on the Camera page and return to the main page to process the image.
The problem is that the Camera is turned off.
If it is not turned off correctly, an Exception is caused and the application is forced to close.

My temporary solution:

Button_beck_page: Event
Terminar = false; <---- Thread finiched
await Navigation.PopModalAsync();
//--------------------------------- in thread
await MainThread.InvokeOnMainThreadAsync(() =>
{
MyCamera.StopCameraPreview(); close camera
});

                               MyCamera.Handler?.DisconnectHandler();
                               MyCamera.MediaCaptured -= MyCamera_MediaCaptured;

//-----------------------

Since my application needs to open and close after each photo.
Or if there is a way to run the camera in the background, just
connect and disconnect the event
CommunityToolkit.Maui.Views.MediaCapturedEventArgs

thanks,
Carlos.

[rokmeglic71]

@autoprog I could not get what the problem is, so I helped with CoPilot.
Why don't you use loaded/unloaded event and attach/dettach event for camera?
CoPilot example bellow. Please let me know if this helps you.

public partial class CameraPage : ContentPage
{
    public CameraPage()
    {
        InitializeComponent();
    }

    protected override void OnAppearing()
    {
        base.OnAppearing();
        MyCamera.StartCameraPreview();
        MyCamera.MediaCaptured += MyCamera_MediaCaptured;
    }

    protected override void OnDisappearing()
    {
        base.OnDisappearing();

        try
        {
            MyCamera.StopCameraPreview();
        }
        catch { /* swallow if already stopped */ }

        MyCamera.MediaCaptured -= MyCamera_MediaCaptured;

        // Force handler cleanup
        MyCamera.Handler?.DisconnectHandler();
    }

    private void MyCamera_MediaCaptured(object sender, MediaCapturedEventArgs e)
    {
        // Save or pass image back to VM
    }
}