UINavigationController底部工具栏在hideBarsOnTap之后不保留其状态

I have a UINavigationController that has a bottom toolbar which I set it's height programatically like so:

我有一个UINavigationController有一个底部工具栏,我以编程方式设置它的高度,如下所示:

navigationController?.toolbar.frame.size.height += 43.0
navigationController?.toolbar.frame.origin.y -= 43.0
navigationController?.hidesBarsOnTap = true

When I tap on my View to hide the bars and tap again to show them, the bottom bar returns to it's default state:

当我点击我的视图以隐藏条形并再次点击以显示它们时,底部栏返回到它的默认状态:

How can I preserve the height after the bar shows again?

如何再次显示栏后保留高度?

Thanks a lot! :)

非常感谢! :)

1 个解决方案

#1

There's not a great way to do that, but you can do something like place a tapGestureRecognizer on self.view and count the number of taps.

没有一个很好的方法可以做到这一点,但你可以做一些事情,比如在self.view上放置一个tapGestureRecognizer并计算点击次数。

Something like

    var numTaps = 0
    @IBAction func tapOnView(sender: UITapGestureRecognizer) {
        self.numTaps++
        if numTaps%2==0
        {
            self.navigationController?.toolbar.frame.size.height += 43.0
            self.navigationController?.toolbar.frame.origin.y -= 43.0
        }
    }

    func gestureRecognizer(gestureRecognizer: UIGestureRecognizer,
        shouldRecognizeSimultaneouslyWithGestureRecognizer otherGestureRecognizer: UIGestureRecognizer) -> Bool{
            return true
    }

It is a little hackish but might work, might try with a slight delay to ensure you set the height after the toolbar's position is set.

它有点hackish但可能会工作,可能会稍微延迟,以确保您在工具栏的位置设置后设置高度。

Or try one of the answers provided Is there a way to change the height of a UIToolbar? and subclass uitoolbar to override sizeThatFits

或尝试提供的答案之一有没有办法改变UIToolbar的高度?和子类uitoolbar重写sizeThatFits

#1