ios 设置导航栏图标的大小
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setting the size of navigationbar icon ios
提问by user2823044
I want to know is there any default size for Navigationbar icons.where designer need to design it.Should they design it for retina and non-retina display.At present I'm using images downloaded from internet which are not looking great.
我想知道导航栏图标是否有任何默认大小。设计师需要设计它。他们是否应该为视网膜和非视网膜显示设计它。目前我正在使用从互联网下载的图像，这些图像看起来不太好。
回答by User 1531343
Create navigation bar icon in the following sizes:
创建以下尺寸的导航栏图标：
About 44 x 44 pixels
About 22 x 22 pixels (standard resolution)
more informtation you can find here https://developer.apple.com/library/ios/documentation/userexperience/conceptual/mobilehig/BarIcons.html
您可以在此处找到更多信息 https://developer.apple.com/library/ios/documentation/userexperience/conceptual/mobilehig/BarIcons.html
回答by Suragch
The recommend sizes in the docsfor the navigation bar icons are as follows:
文档中导航栏图标的推荐尺寸如下：
@1: 25 x 25
@2: 50 x 50
@3: 75 x 75
Create three images of the above pixel sizes and then add them to a new image set in your Assets.xcassets file.
创建三个上述像素大小的图像，然后将它们添加到 Assets.xcassets 文件中的新图像集中。
Notes
笔记
- When I try to make the icons at the recommended sizes, they look too small to me. I actually make them a little bigger than that. So take the doc recommendations as a starting point, but you might have to make adjustments as necessary.
- A second method would be to use a single universal vector image (pdf) (see hereand here). Not everyone recommends this, but it is the method I use now. It's convenient and makes future image editing and resizing easier.
- 当我尝试以推荐的尺寸制作图标时，它们对我来说看起来太小了。我实际上让它们比那大一点。因此，以文档建议为起点，但您可能必须根据需要进行调整。
- 第二种方法是使用单个通用矢量图像 (pdf)（参见此处和此处）。不是每个人都推荐这个，但这是我现在使用的方法。它很方便，使未来的图像编辑和调整大小更容易。
回答by Ramdhas
1. iPhone 5 88 / 64 px
2. iPhone 4/4S 88 / 64 px
3. Retina iPad 88 px
4. iPad Mini 44 px
5. iPad 44 px
The Navigation Bar usually includes a title as well as basic navigation and action buttons (such as back to previous view, create, edit, etc.). In landscape orientation, the height of the Nav bar is usually shrunk a bit (to 32pt) to allow more content to be displayed below it.
导航栏通常包括标题以及基本导航和操作按钮（例如返回上一个视图、创建、编辑等）。在横向模式下，导航栏的高度通常会缩小一点（至 32 磅），以允许在其下方显示更多内容。
Ref Link: http://ivomynttinen.com/blog/the-ios-7-design-cheat-sheet/
参考链接：http: //ivomynttinen.com/blog/the-ios-7-design-cheat-sheet/
