A really-really-really cool article by Udi Cohen about Android Performance Optimization. This article based on author’s talk at DroidconNYC2015. In this article he shows real examples for performance issues, and how to identify them with the available tools. Also he shows some tips and best practices how he optimizes his apps. At the end of the article you’ll find code-samples which simulate situations described in the article and links to the related articles where more info could be found.
Link to the article: Speed up your app