public void OpenCamera()
{
if (MyCamera != null)
{
MyCamera.StopPreview();
MyCamera.Release();
MyCamera = null;
}
if (_cameraId >= 0)
{
Camera.GetCameraInfo(_cameraId, _cameraInfo);
MyCamera = Camera.Open(_cameraId);
Camera.Parameters param = MyCamera.GetParameters();
param.SetRotation(0);
MyCamera.SetParameters(param);
try {
if (_surfaceTexture != null)
{
MyCamera.SetPreviewTexture(_surfaceTexture);
MyCamera.StartPreview();
}
} catch (Exception) {
}
}
UpdateRotation();
}
private void UpdateCameraAspect()
{
try
{
Camera.Parameters camParams = camera.GetParameters();
Camera.CameraInfo info = new Camera.CameraInfo();
Camera.GetCameraInfo((int)Android.Hardware.CameraFacing.Back, info);
Camera.Size size = GetOptimalPreviewSize(camParams.SupportedPreviewSizes, width, height);
camParams.SetPreviewSize(size.Width, size.Height);
int rotation = (info.Orientation + 360) % 360;
camParams.SetRotation(rotation);
if (camParams.SupportedFocusModes.Contains(Camera.Parameters.FocusModeContinuousPicture))
{
camParams.FocusMode = Camera.Parameters.FocusModeContinuousPicture;
}
camera.SetParameters(camParams);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public void SurfaceChanged(ISurfaceHolder holder, [GeneratedEnum] Format format, int width, int height)
{
Camera.Parameters parameters = Parent.camera.GetParameters();
Camera.Size size = Parent.GetBestPreviewSize(width, height,
parameters);
if (size != null)
{
parameters.SetPreviewSize(size.Width, size.Height);
parameters.SetPictureSize(size.Width, size.Height);
parameters.SetRotation(90);
parameters.FocusMode = Camera.Parameters.FocusModeContinuousPicture;
Parent.camera.SetParameters(parameters);
Parent.camera.StartPreview();
Parent.inPreview = true;
}
}
