RecyclerView Layout Weight

更新日期: 2022-06-26 阅读次数: 200 字数: 163 分类: Android

例如,我想将 RecyclerView 的高度设置为占据整个屏幕余下的空间。

代码结构

// 外层,例如 LinearLayout
android:layout_height="match_parent"

// 组件,例如 RecyclerView
android:layout_weight="1"
android:layout_height="0dp"

如果不设置 layout_height

会遇到运行时错误:

you must supply a layout_height attribute

如果设置 layout_height 为 wrap_content

若同时设置 layout_weight 和 layout_height,且 layout_height 为 wrap_content.

会看到警告信息:

Issue id: InefficientWeight

Use a layout_height of 0dp instead of wrap_content for better performance When only a single widget in a LinearLayout defines a weight, it is more efficient to assign a width/height of 0dp to it since it will absorb all the remaining space anyway. With a declared width/height of 0dp it does not have to measure its own size first.

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