Designing sleek Android Apps using Google Material Design system is no joke. You need to know all the sizes, spacing and metrics for Designing seamless Android App User Interfaces. Also your Designed Android App User interfaces must be easily translated into coded Android Apps

Designing Android Apps on a professional level where your coders can't say "We can't code that design" is really difficult. You need to learn what is DP, SP, DPI and how you need to explain the sizes of your Android App elements in DPs and how you can define a great color scheme your coders can praise. What about exporting your design assets for multiple Android screen sizes and what about automatically creating the coded specs and style guide for your developers