如何在没有视图控制器的情况下在TabBar上添加一个额外的按钮,因为我想按照以下方法来处理该按钮单击表单...
override func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem)
{
if (tabBar.items?.firstIndex(of: item))! == 3{
//button click do some thing on existing view
}
}
我已经使用以下代码在ViewControllers中添加了三个按钮
let VC = UIStoryboard.init(name: "Main", bundle:
Bundle.main).instantiateViewController(identifier: VCidentifier)
VC.tabBarItem.image = UIImage(named: selectedImage)
VC.tabBarItem.selectedImage = UIImage(named: unSelectedImage)
然后将这些ViewController添加到此
viewControllers = [firstVC,secoundVC,thirdVC,fourthVC]
但是我想添加一个没有视图控制器的按钮...