public void UpdateBackButton( )
{
// if there are VCs in the stack
if (SubNavigationController.ViewControllers.Length > 1)
{
// only allow back if we're in regular landscape or portrait mode
bool allowBack = false;
if (SpringboardViewController.IsLandscapeWide( ) == true || SpringboardViewController.IsDevicePortrait( ) == true)
{
allowBack = true;
}
// OR, if there's a current task, ask it if there should be an override
if (CurrentTask != null)
{
// if they return true, read their override result.
bool overrideBackResult = false;
if (CurrentTask.WantOverrideBackButton(ref overrideBackResult))
{
allowBack = overrideBackResult;
}
}
SubNavToolbar.SetBackButtonEnabled(allowBack);
}
else
{
SubNavToolbar.SetBackButtonEnabled(false);
}
}
public override void ViewDidLayoutSubviews()
{
base.ViewDidLayoutSubviews();
SubNavToolbar.ViewDidLayoutSubviews( );
}
