private void SetGradientBackground(Android.Support.V7.Widget.Toolbar toolbar)
{
Tuple <Color, Color> colors = new Tuple <Color, Color>(StartColor, EndColor);
var direction = GradientDrawable.Orientation.LeftRight;
GradientDrawable gradient = new GradientDrawable(direction, new int[] { colors.Item1.ToAndroid().ToArgb(), colors.Item2.ToAndroid().ToArgb() });
gradient.SetCornerRadius(0f);
toolbar.SetBackground(gradient);
}
void UpdateToolbarBackground(Android.Support.V7.Widget.Toolbar toolbar, Page lastPage, Activity activity, Android.Graphics.Drawables.Drawable defaultBackground)
{
if (string.IsNullOrEmpty(CustomNavigationPage.GetBarBackground(lastPage)) && CustomNavigationPage.GetGradientColors(lastPage) == null)
{
toolbar.SetBackground(defaultBackground);
}
else
{
if (!string.IsNullOrEmpty(CustomNavigationPage.GetBarBackground(lastPage)))
{
toolbar.SetBackgroundResource(this.Context.Resources.GetIdentifier(CustomNavigationPage.GetBarBackground(lastPage), "drawable", Android.App.Application.Context.PackageName));
}
if (CustomNavigationPage.GetGradientColors(lastPage) != null)
{
var colors = CustomNavigationPage.GetGradientColors(lastPage);
var direction = GradientDrawable.Orientation.TopBottom;
switch (CustomNavigationPage.GetGradientDirection(lastPage))
{
case CustomNavigationPage.GradientDirection.BottomToTop:
direction = GradientDrawable.Orientation.BottomTop;
break;
case CustomNavigationPage.GradientDirection.RightToLeft:
direction = GradientDrawable.Orientation.RightLeft;
break;
case CustomNavigationPage.GradientDirection.LeftToRight:
direction = GradientDrawable.Orientation.LeftRight;
break;
}
GradientDrawable gradient = new GradientDrawable(direction, new int[] { colors.Item1.ToAndroid().ToArgb(), colors.Item2.ToAndroid().ToArgb() });
gradient.SetCornerRadius(0f);
toolbar.SetBackground(gradient);
}
}
toolbar.Background.SetAlpha((int)(CustomNavigationPage.GetBarBackgroundOpacity(lastPage) * 255));
}
