public void OnAutoFocus(bool success, Android.Hardware.Camera camera)
{
if (success)
{
try {
camera.CancelAutoFocus();
}
catch
{
}
}
focussing = false;
}
void video_Touch(object sender, View.TouchEventArgs e)
{
if (e.Event.Action == MotionEventActions.Up && camera.GetParameters().SupportedFocusModes.Contains(Android.Hardware.Camera.Parameters.FocusModeAuto) && !focussing)
{
focussing = true;
try
{
camera.CancelAutoFocus();
}
catch
{
}
float x = e.Event.GetX();
float y = e.Event.GetY();
Rect touchRect = new Rect(
(int)(x - 70),
(int)(y - 70),
(int)(x + 70),
(int)(y + 70));
Rect targetFocusRect = new Rect(
touchRect.Left * 2000 / View.Width - 1000,
touchRect.Top * 2000 / View.Height - 1000,
touchRect.Right * 2000 / View.Width - 1000,
touchRect.Bottom * 2000 / View.Height - 1000);
List <Android.Hardware.Camera.Area> focusList = new List <Android.Hardware.Camera.Area>();
Android.Hardware.Camera.Area focusArea = new Android.Hardware.Camera.Area(targetFocusRect, 1000);
focusList.Add(focusArea);
Android.Hardware.Camera.Parameters param = camera.GetParameters();
param.FocusAreas = focusList;
param.MeteringAreas = focusList;
if (ViewCompat.GetLayoutDirection(focusring) == ViewCompat.LayoutDirectionRtl)
{
focusring.LayoutParameters = new FrameLayout.LayoutParams(focusring.LayoutParameters)
{
MarginStart = Resources.DisplayMetrics.WidthPixels - ((int)x + (int)TypedValue.ApplyDimension(ComplexUnitType.Dip, 40, Resources.DisplayMetrics)), TopMargin = (int)y - (int)TypedValue.ApplyDimension(ComplexUnitType.Dip, 40, Resources.DisplayMetrics)
};
}
else
{
focusring.LayoutParameters = new FrameLayout.LayoutParams(focusring.LayoutParameters)
{
MarginStart = (int)x - (int)TypedValue.ApplyDimension(ComplexUnitType.Dip, 40, Resources.DisplayMetrics), TopMargin = (int)y - (int)TypedValue.ApplyDimension(ComplexUnitType.Dip, 40, Resources.DisplayMetrics)
};
}
focusring.Visibility = ViewStates.Visible;
Animation scaleup = AnimationUtils.LoadAnimation(Context, Resource.Animation.scaleup);
scaleup.Interpolator = new DecelerateInterpolator();
scaleup.Duration = 300;
inner_ring.StartAnimation(scaleup);
Animation scaledown = AnimationUtils.LoadAnimation(Context, Resource.Animation.scaledown);
scaledown.Duration = 300;
scaledown.Interpolator = new DecelerateInterpolator();
outer_ring.StartAnimation(scaledown);
//View.SetHaveTouch(true, touchRect);
//drawingView.Invalidate();
// // Remove the square indicator after 1000 msec
try
{
camera.SetParameters(param);
camera.AutoFocus(this);
//drawingView.setHaveTouch(true, touchRect);
//drawingView.Invalidate();
// Remove the square indicator after 1000 msec
}
catch (Exception ef)
{
Console.WriteLine(ef);
focussing = false;
}
Handler handler = new Handler();
handler.PostDelayed(() => {
focusring.Visibility = ViewStates.Invisible;
}, 800);
}
}