如何让UIToolbar有一个清晰的背景？ [英] How to make UIToolbar have a Clear Background?

问题描述

我有一个UIToolbar，它有一个白色调，带有一个条形按钮项，后面是一些灵活空间，后面是另一个条形按钮项。我想让工具栏完全清晰，以便我可以看到灵活空间下的内容（我不关心看到按钮后面的内容）。有没有办法做到这一点？
我尝试将工具栏设置为半透明，但这并不能完全清楚。

I have a UIToolbar that has a white tint, with a bar button item, followed by some flexible space, followed by another bar button item. I would like to make the toolbar completely clear so that I can see what is under the flexible space (I don't care about seeing what is behind the buttons). Is there a way to do this? I have tried setting the toolbar to translucent, but that does not make it completely clear.

推荐答案

[self.toolbar setBackgroundImage:[UIImage new]
              forToolbarPosition:UIToolbarPositionAny
                      barMetrics:UIBarMetricsDefault];

 [self.toolbar setBackgroundColor:[UIColor clearColor]];

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