private void UpdateContentInset()
{
var navBarBottomY = _navBarController.View.Frame.Y / _navBarController.View.Frame.Height;
nfloat top;
if (!_extensionController.IsContracted())
{
top = _extensionController.View.Frame.Y + _extensionController.View.Bounds.Size.Height;
}
else
{
top = navBarBottomY;
}
UpdateScrollContentInsetTop(top);
}
private void HandleScrollingEnded(nfloat velocity)
{
var minVelocity = 500;
if (!IsViewControllerVisible() || (_navBarController.IsContracted() && velocity < minVelocity))
{
return;
}
_resistanceConsumed = 0;
if (_currentState == HidingNavigationBarState.Contracting || _currentState == HidingNavigationBarState.Expanding || velocity > minVelocity)
{
var contracting = _currentState == HidingNavigationBarState.Contracting;
if (velocity > minVelocity)
{
contracting = false;
}
var deltaY = _navBarController.Snap(contracting);
var tabBarShouldContract = deltaY < 0;
_tabBarController?.Snap(tabBarShouldContract);
var newContentOffset = _scrollView.ContentOffset;
newContentOffset.Y -= deltaY;
var contentInset = _scrollView.ContentInset;
var top = contentInset.Top + deltaY;
UIView.Animate(0.2, () =>
{
UpdateScrollContentInsetTop(top);
_scrollView.ContentOffset = newContentOffset;
});
_previousYOffset = nfloat.NaN;
}
}
