Learn the most common anti-patterns in Android codebases and follow a clear step-by-step approach to refactor legacy code to meet proper architectural standards in this 48-minute tutorial by Philipp Lackner. Discover practical techniques for identifying problematic code patterns and systematically transforming them into well-structured, maintainable implementations. The tutorial provides a comprehensive refactoring strategy that helps modernize outdated Android applications while preserving functionality and improving code quality.