J'essaie de créer une application qui utilise skiasharp sur une superposition pour l'appareil photo sur iPhone (natif). Mon flux de caméra apparaît bien mais pas de superposition. la viewcontroller initiale qui crée le flux ressemble:créer superposition de caméra skiasharp xamarin ios
public async override void ViewDidLoad()
{
base.ViewDidLoad();
await AuthorizeCameraUse();
imagePicker = new UIImagePickerController();
// set our source to the camera
imagePicker.SourceType = UIImagePickerControllerSourceType.Camera;
// set
imagePicker.MediaTypes = new string[] { "public.image" };
imagePicker.CameraOverlayView = new CameraOverlayView();
imagePicker.ModalPresentationStyle = UIModalPresentationStyle.CurrentContext;
. . .
mon CameraOverlayView ressemble:
public class CameraOverlayView :SKCanvasView
{
public CameraOverlayView() : base()
{
Initialize();
}
public CameraOverlayView(CGRect frame) : base(frame) {
Initialize();
}
SKPaint paint = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.Red,
StrokeWidth = 25
};
protected void Initialize()
{
this.PaintSurface += CameraOverlayView_PaintSurface;
//using (var surface = SKSurface.Create(640, 480, SKColorType.Rgba8888, SKAlphaType.Premul))
//{
// SKCanvas myCanvas = surface.Canvas;
// myCanvas.DrawCircle(300, 300, 100, paint);
// // Your drawing code goes here.
//}
}
private void CameraOverlayView_PaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
var surface = e.Surface;
// then we get the canvas that we can draw on
var canvas = surface.Canvas;
// clear the canvas/view
canvas.Clear(SKColors.White);
// DRAWING SHAPES
// create the paint for the filled circle
var circleFill = new SKPaint
{
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = SKColors.Blue
};
// draw the circle fill
canvas.DrawCircle(100, 100, 40, circleFill);
}
}
mon événement de peinture est jamais tiré, si je lance ce code dans l'exemple simple, il fait.