使iOS 8.1中的下方图像的导航栏透明 [英] Make navigation bar transparent regarding below image in iOS 8.1

问题描述

我尝试将导航栏设置为透明，如下图所示：

I try to set my navigation bar transparent regarding a image below this, something like the following image :

我在透明导航栏ios 但是我没有得到上面的结果，我只得到左侧的图标但导航栏中没有任何颜色，完全没有透明。但如果我设置背景颜色，透明度就会消失。

I tried the solution in transparent navigation bar ios but I don't get the above result, I get only the icon on the left but without any color in the navigation bar, completely transparent. But if I set a background color the transparency disappears at all.

有没有办法在导航栏中设置颜色并使其透明？

There is any way to set a color in the navigation bar and make it transparent??

谢谢你提前。

推荐答案

只需在8.1模拟器上查看并获得与您的图片非常相似的结果

just checked on the 8.1 simulator and got very similar result to your picture

    let bar:UINavigationBar! =  self.navigationController?.navigationBar

    bar.setBackgroundImage(UIImage(), forBarMetrics: UIBarMetrics.Default)
    bar.shadowImage = UIImage()
    bar.backgroundColor = UIColor(red: 0.0, green: 0.3, blue: 0.5, alpha: 0.3)

这里的要点是背景颜色与alpha。

main point here is background color with alpha.

检查附图，也许我错过了什么？

Check attached image, maybe I missed something?

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