How to draw landscape version of android application?

Question

Android

Hello!
The first time I come across a mobile application where a landscape version is needed. Our programmer also encountered this for the first time. Initially, the TOR did not indicate the need for an album version.
In general, there is a design of the regular version. Yes
With the formats hdpi, mdpi, xhdpi, xxhdpi, did not bother. Proger said that 720x1280 would suit him, and in general, at his discretion. Although the first time I did a design for an application for different resolutions, that is, 4 versions.
The question is this: when I start making a landscape version (to be honest, it was not originally adapted for this, neither the prototype nor the design, respectively), then my hands reach out to break the structure of the vertical version. For example, too wide margins can obviously be movedup. Or you want to move vertically located buttons horizontally. Is it worth it to do so? Will there be troubles with the layout?
The programmer said that he would still make up two different versions, he himself did not really understand what and how, heh.

Answer 1

There will be no strong problems in the software part, so draw ui / ux as you want or see. Vyzhdesigner