Swift UITabBarController隐藏动画

问题描述：

我正尝试在隐藏时将动画添加到我的tabBarController中.我可以通过使用 self.navigationController?.isNavigationBarHidden = true 来使用 navigationBarController 实现此效果.我可以通过使用 self.tabBarController?.tabBar.isHidden = true 隐藏tabBar，但我没有获得动画，我该怎么做呢?

I'm trying to add animation to my tabBarController when hidden. Im able to accomplish this effect with the navigationBarController by using self.navigationController?.isNavigationBarHidden = true. I'm able to hide the tabBar by using self.tabBarController?.tabBar.isHidden = true but i do not get the animation how can I do this thank you in advance.

答

您可以在动画中更改标签栏的框架，例如:

You could change the tab bar's frame inside an animation, so something like:

func hideTabBar() {
    var frame = self.tabBarController?.tabBar.frame
    frame?.origin.y = self.view.frame.size.height + (frame?.size.height)!
    UIView.animate(withDuration: 0.5, animations: {
        self.tabBarController?.tabBar.frame = frame!
    })
}

func showTabBar() {
    var frame = self.tabBarController?.tabBar.frame
    frame?.origin.y = self.view.frame.size.height - (frame?.size.height)!
    UIView.animate(withDuration: 0.5, animations: {
        self.tabBarController?.tabBar.frame = frame!
    })
}

将标签栏设置在可见屏幕的正下方，以便它从底部向上/向下滑动.

Which sets the tab bar just below the visible screen, so that it slides up/down from the bottom.

Swift UITabBarController隐藏动画

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