How to implement support for different screen resolutions for Android games in Unity3d?

Question

Android

Hello. I googled and found a couple of options. For example here and here .
Consider creating a heap of resources for a particular resolution. And (this is from stackoverflow) changing the orthographicSize while resizing the sprites. Which option is acceptable? If not one, then how to make a tip correctly?
Thanks in advance.

Answer 1

Actually in the question itself and reflected the answer. Plus , this makes it clearer.

Answer 2

Your idea is the last century, use the new uGUI. Everything is there.