Every single layout item in views is going to need a declared height and width. All together this adds up to lots and lots of extra lines in your XML layouts and styles. Instead, fallback on the sensible default of always wrapping your layouts. This way, unless you declare otherwise in your styles, you can expect your views to wrap their content and you can save space on all those redundant width/height declarations.
Simply add the following within your theme:
<style>
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
</style>