标签栏图标大小 [英] Tab Bar Icon Size

问题描述

Apple 说:

根据设备和方向，系统会显示常规或紧凑的选项卡栏.您的应用应包含两种尺寸的自定义标签栏图标.

Depending on the device and orientation, the system displays either a regular or compact tab bar. Your app should include custom tab bar icons for both sizes.

不幸的是，它们无法指定您何时获得.

Unfortunately, they fail to specify when you get which.

我也可能同时包括这两种尺寸的图像，但是系统会自动在它们之间切换(如何?)还是我必须自己做?

Also I might include those images for both sizes, but will the system switch between them automatically (how?) or do I have to do it myself?

推荐答案

您不应自己执行此操作，否则系统可以自动执行此操作.

You should not do this yourself system can do it automatically.

这是Apple人机界面指南，您可以在其中找到图标分辨率: https://developer.apple.com/ios/human-interface-guidelines/icons-and-images/custom-icons/

here is Apple Human Interface Guidelines, where you can find icon resolutions: https://developer.apple.com/ios/human-interface-guidelines/icons-and-images/custom-icons/

例如: 如果将圆形图标用于标签栏项目，则应为纵向模式创建以下尺寸:

for example: If you are using circular icons for tab bar item you should create following sizes for portrait mode:

• 75px×75px(25pt×25pt @ 3x)
• 50px×50px(25pt×25pt @ 2x)
• 25px×25px(25pt×25pt @ 1x)

，对于横向模式:

• 54px×54px(18pt×18pt @ 3x)
• 36像素×36像素(18pt×18pt @ 2x)
• 18px×18px(18pt×18pt @ 1x)

在将此图标添加到Assets.xcassets或某处之后，可以从情节提要中选择标签栏项目"图标:

after you add this icons into Assets.xcassets or somewhere, you can select Tab Bar Item icons from storyboard:

选择选项卡栏"项，然后在属性检查器中，选择肖像"图像作为图像字段，选择风景"图像作为风景"字段.

select Tab Bar item and in the attributes inspector, choose portrait image for image field, and landscape image for landscape field.

在那之后，系统将为您做一切.

After that system will do everything for you.

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