public void UnlockFocus()
{
try
{
// Reset the auto-focus trigger
PreviewRequestBuilder.Set(CaptureRequest.ControlAfTrigger, (int)ControlAFTrigger.Cancel);
SetAutoFlash(PreviewRequestBuilder);
CaptureSession.Capture(PreviewRequestBuilder.Build(), CaptureCallback, BackgroundHandler);
// After this, the camera will go back to the normal state of preview.
State = CameraState.Preview;
CaptureSession.SetRepeatingRequest(PreviewRequest, CaptureCallback, BackgroundHandler);
}
catch (CameraAccessException e)
{
e.PrintStackTrace();
}
}