jakewharton/hugo

Hugo is a tool for Android developers that automatically logs method calls during debugging. Instead of manually writing log statements to print out what arguments a method received, what it returned, and how long it took to run, you just add a small @DebugLog tag above the method. Hugo handles the rest. When your app runs in debug mode, any method marked with that tag will automatically print its inputs, outputs, and execution time to the log. The beauty is that this only happens in debug builds, when you ship a release version to users, the logging disappears entirely and the annotation leaves no trace in the compiled code. You can safely leave the tags in your source code without worrying about performance or leaking debug info in production. This is for Android developers who spend time debugging and want to cut down on the repetitive boilerplate of writing and removing log statements. If you've ever found yourself adding a print statement to check what value a method received, then deleting it before shipping, Hugo eliminates that cycle. You can also toggle the logging off temporarily through a build setting or flip it on and off while the app is running. The project is notably built as a Gradle plugin, which means it hooks into the standard Android build process to strip out the logging code at compile time for release builds. This approach is what makes it safe to keep the annotations in your codebase permanently, the build system guarantees they have zero impact on production.