How do I stretch a UI Element to fill the vertical space on a view?

I have a layout that contains three rows or segments in my Android view.

The first layout region has a fixed height based upon the content of the region with a:layout_height="wrap_content".

The next segment will contain a ListView with it's built in scrolling capability, I would like this to take up the available screen real-estate.

The final segment will always have a fixed height based upon an absolute value or a:layout_height="32dp". I would like this thrid segment "docked" to the bottom of the view.

For reference the following XAML accomplishes what I want

<Grid>
   <Grid.RowDefinitions>
       <RowDefinition Height="auto" />
       <RowDefinition Height="*" />
       <RowDefinition Height="32" />
   </Grid.RowDefinisi开发者_JAVA技巧ons>
</Grid>

Is this possible via android layout XML? And if so how can this be done.

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Set android:layout_height="fill_parent", android:layout_height="match_parent" or android:layout_weight="1".

The latter will take all of the remaining unused space in its parent layout, the former will sometimes force other elements out of view.

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This is definitely possible. You can do this many ways, the easiest of which in my opinion is to simply use a LinearLayout. Something like:

<LinearLayout layout_height="fill_parent">
    <firstitem layout_height="wrap_content" layout_width="fill_parent" />
    <ListView layout_height="fill_parent" layout_width="fill_parent" />
    <bottomitem layout_height="32dp" layout_width="fill_parent" />
</LinearLayout>

Use dp not sp. sp is generally for font sizes, dp for everything else.

By the way, here's a good guide to get you started with common layout objects.

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Have you tried layout_width="fill_parent"?