使用xcode9在ios11中没有显示导航图标？-Navigationiconisnotshowinginios11withxcode9?

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If the navigation icons are not showing, but the interaction is still exists and works properly, it seems, that the problem is with image of the BarButtonItem. You can do next:

如果导航图标没有显示,但交互仍然存在且工作正常,那么问题就在于BarButtonItem的图像。你可以做下一个:

1) Try to set a system icon for BarButtonItem
2) Look at assets and fill all three resolutions (1, @2x, @3x)
3) Check the color of BarButtonItem
4) Check View Hierarchy

1)尝试为BarButtonItem设置系统图标2)查看资源并填充所有三种分辨率(1,@ 2x,@ 3x)3)检查BarButtonItem的颜色4)检查视图层次结构

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This issue happened to me and it was related to the ViewController segue properties. The segue kind was set to "Show Detail(e.g. Replace)" and changing it to Show(e.g. Push) did the trick. This is very weird because it used to work well on previous versions of Xcode but not on Xcode 9.3

这个问题发生在我身上,它与ViewController segue属性有关。 segue类型设置为“Show Detail(例如Replace)”并将其更改为Show(例如Push)就可以了。这非常奇怪,因为它曾经在以前的Xcode版本上运行良好,但在Xcode 9.3上却没有

Hope that helps!

希望有所帮助!

Main Story board pics:

主要故事板图片:

change the "kind" attribute from this:

从这个改变“kind”属性:

to this: