tw-Frey/ulmp.md

Created June 29, 2022 04:10

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Unified layout margins and padding

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ulmp.md

Android 8.0 (API level 26) makes it easier for you to specify situations where opposite sides of a View element use the same margin or padding. Specifically, you can now use the following attributes in your layout XML files:

layout_marginVertical, which defines layout_marginTop and layout_marginBottom at the same time.
layout_marginHorizontal, which defines layout_marginLeft and layout_marginRight at the same time.
paddingVertical, which defines paddingTop and [paddingBottom] at the same time.
paddingHorizontal, which defines [paddingLeft] and [paddingRight] at the same time.

But

參考 https://developer.android.com/about/versions/oreo/android-8.0#ulmp https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/tools/aapt2/#version-2_16 [paddingBottom]:https://developer.android.com/reference/android/R.attr#paddingBottom [paddingLeft]:https://developer.android.com/reference/android/R.attr#paddingLeft [paddingRight]:https://developer.android.com/reference/android/R.attr#paddingRight

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