Lesson 2: Make It Easy For Your Team To Access Assets
In the past a few years, a lot of different screen sizes and measurement units emerged across iOS, Android, and Web platforms.
We need to consider this and make it as easy as possible for our teammates to access assets in the right format for their platform so that they can start development, so that we don’t have to manually reproduce assets for the right platform, and so that we don’t get caught in back-and-forth email chains last minute while engineering is trying to make a sprint planning deadline.
iOS engineers use pt (points) as their main development unit. This is different from the typographical ‘point unit’ that is available to us in our design tools.
Android engineers use dp (density-independent pixel) as the main unit and sp (scale-independent pixel) for text size.
In Web, there are even more options. Some engineers simply use px (pixels), some use percentage values, and some of them use em/rem values. Both rem and em are relative units, px is not. Relat...