Android designing to fit all screens

Question

I am updating my Android app and realized that I have created a layout for every possible screen size (layout-small, layout-large, etc...) It would be a huge pain to go through every XML file and manually make a small change. I am attempting to create a single XML file to support all screen sizes. After reviewing the Android documentation and other questions on stackoverflow, it seems LinearLayout is the best choice as you can provide a weightSum and layout_weight for each item in the layout. This is not working as expected (see below code and images). I am doing this correctly? Do I have to go back to creating a RelativeLayout for every possible screen size?

Answer 1

From my little experience I would say relative layout is more flexible from linear layout. Anyway regarding for support screen sizes, you can add dimens folder to add different sizes & margins for different screen sizes