1.实现动画效果的方法
/// tabbarItem点击时的动画效果
///
/// - Parameter index: 点击的item的位置
func tabbarItemAnimationWithIndex(index: Int){
var tabbarItem : [UIView] = []
for tabBarButton in self.tabBar.subviews{
if tabBarButton.isKind(of: NSClassFromString("UITabBarButton")!){
tabbarItem.append(tabBarButton)
}
}
let pulse = CABasicAnimation.init(keyPath: "transform.scale")
pulse.timingFunction = CAMediaTimingFunction.init(name: kCAMediaTimingFunctionEaseInEaseOut)
pulse.duration = 0.1
pulse.repeatCount = 1
pulse.fromValue = NSNumber.init(value: 0.8)
pulse.toValue = NSNumber.init(value: 1.0)
let itemView = tabbarItem[index]
itemView.layer.add(pulse, forKey: "")
self.indexFlag = index//声明的私有属性
}
2.重写tabbarItem点击的方法
override func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) {
let selectIndex = self.tabBar.items?.index(of: item)
//声明的私有属性
if self.indexFlag != selectIndex{
self.tabbarItemAnimationWithIndex(index: selectIndex!)
}
}
