void UpdateDrawerState(bool isOpen)
{
double endState = isOpen ? 1 : 0;
var animation = new Animation((r) =>
{
OpenRatio = r;
InvalidateLayout();
}, OpenRatio, endState, Easing.SinIn);
animation.Commit(this, "DrawerOpen", length: (uint)(250 * Math.Abs(endState - OpenRatio)), finished: (f, aborted) =>
{
if (!aborted)
{
if (isOpen)
{
DrawerOpened?.Invoke(this, EventArgs.Empty);
}
else
{
DrawerClosed?.Invoke(this, EventArgs.Empty);
}
}
});
}
public override void OnDrawerOpened(View drawerView)
{
DrawerOpened?.Invoke(this, new ActionBarDrawerEventArgs(drawerView));
base.OnDrawerOpened(drawerView);
}