public override void OnViewAdded(Android.Views.View child)
{
base.OnViewAdded(child);
if (child.GetType() == typeof(Android.Support.V7.Widget.Toolbar))
{
_toolbar = (Android.Support.V7.Widget.Toolbar)child;
MyNavigationPageRenderer myNavigationPageRenderer = (MyNavigationPageRenderer)Element;
GradientDrawable gradientDrawable = new GradientDrawable(
GradientDrawable.Orientation.LeftRight,
new int[] { myNavigationPageRenderer.StartColor.ToAndroid(),
myNavigationPageRenderer.EndColor.ToAndroid() });
_toolbar.SetBackgroundDrawable(gradientDrawable);
_toolbar.Elevation = 0;
}
}
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);
if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.JellyBean)
{
toolbar.SetBackground(gradient);
}
else
{
toolbar.SetBackgroundDrawable(gradient);
}
}
}
toolbar.Background.SetAlpha((int)(CustomNavigationPage.GetBarBackgroundOpacity(lastPage) * 255));
}