Declaring your UI layout in XML rather than runtime code is useful for several reasons, but it's especially important so you can create different layouts for different screen sizes.
在XML中声明你的UI布局，而非运行时刻的代码中，在一些时候是有用的，尤其是你可以为不同的屏幕大小创建不同的布局。
Declaring your UI layout in XML rather than runtime code is useful for several reasons, but it's especially important so you can create different layouts for different screen sizes.
在XML中声明你的UI布局，而非运行时刻的代码中，在一些时候是有用的，尤其是你可以为不同的屏幕大小创建不同的布局。
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