Build an Android Lint in 25 Minutes

on YouTube ↗27m

" summary

Shows how to add a custom Android Lint rule that detects uses of a project-wide singleton (example BadReferenceObject) when referenced from Activities. Implements the rule as a SourceCodeScanner using UAST and PSI, registers it for Gradle via a registry and lint API version, and verifies it with a focused lintTestTask against small source stubs (tests run locally and report one warning). Gives practical tips: narrow rule scope, keep tiny test files for fast edit→test cycles, debug with breakpoints, and prefer UAST over PSI where suitable.

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" chapters (10)

1. 0:00Introduction
2. 2:55Android Lint components
3. 7:31Lint rule setup
4. 10:20Test code setup
5. 14:47AST/PSI scanning
6. 21:07Detecting bad refs
7. 22:51Customizing reports
8. 24:38Rule creation tips
9. 25:22Implementation tips
10. 26:45Summary

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