What properties it is necessary to set view1, so that it fills the rest of the window?
<Alloy>
<Window>
<View id="view1">
</View>
<View id="view2" height="50">
</View>
</Window>
</Alloy>
<Alloy>
<Window>
<View id="view1" top="0" bottom="50" width="100%">
</View>
<View id="view2" height="50" bottom="0" width="100%">
</View>
</Window>
</Alloy>
Also it is good to put the dimensions in the style (TSS) file instead of putting them in the view XML file. If this resolves your query then mark it as an answer for the reference for the rest of the community.