Java Code Review Checklist for Android: Lifecycles, Errors and Resources
A Java code review for Android should prioritize ownership, lifecycle and failure behavior before style. Code can be neatly formatted and still leak an.
Code quality
Android Code Checker
Paste Kotlin or Java and catch common Android mistakes, anti-patterns, and code smells before they reach review.
Android Code Checker is part of APKLint, an online toolkit for inspecting Android APK files. Paste Kotlin or Java and catch common Android mistakes, anti-patterns, and code smells before they reach review. Paste your Kotlin or Java source in your browser to view the relevant details; results reflect what you paste.
Nothing is stored. What you submit is processed on our servers over an encrypted connection for this request only — it isn’t written to file or object storage, and never shared. No account required.
About Android Code Checker
Paste Kotlin or Java and catch common Android mistakes, anti-patterns, and code smells before they reach review.
Android Code Checker is part of APKLint’s code quality toolkit — Static analysis for Kotlin, Java, and your Gradle build. It’s free to use and needs no account.
Your privacy is the default: what you submit is processed on our servers over an encrypted connection for that request only — it isn’t written to file or object storage, and never shared.
What Android Code Checker checks
- Common Android mistakes in pasted Java/Kotlin
- Insecure or deprecated API usage
- Code smells and anti-patterns
- Quick inline feedback
Good to know: Pattern-based checks on a snippet — useful for a quick read, not a replacement for IDE inspections.
When to use Android Code Checker
- Best for
- Pasting Java or Kotlin and catching common Android mistakes, anti-patterns, and code smells before code review.
- Not the right tool for
- Not a compiler or full CI lint, and it does not analyze a whole project, just the snippet you paste.
- What you get back
- Flagged Android-specific mistakes and smells in your pasted source, with short explanations.
- How it differs from related APKLint tools
- It is the general Android Java/Kotlin checker; Android Lint mimics Gradle-lint heuristics, Kotlin Lint is Kotlin-specific, and the Static Code Analysis tool leans security/smell.
- Limitations
- Static pattern checks on a snippet are heuristic and not a substitute for full project lint.
How to use Android Code Checker
- Paste your code — Paste one Java or Kotlin source file or snippet.
- Send for analysis — APKLint checks it on our servers over an encrypted connection.
- Review the findings — Work through each result with a short explanation of why it matters.
- Nothing is stored — Your pasted text is processed for this request only — it isn't written to file or object storage, logged for analytics, or shared.
Why use APKLint
Always free
Every tool is free with no login and no paywall. Reasonable file and input limits keep the free service stable.
No on-page ad banners
A clean, focused interface with no third-party ad banners cluttering your results.
Privacy-first
What you submit is processed for the request only — it isn't written to file or object storage, and never shared.
How it runs
Lightweight pattern-based static checks — a heuristic scan, not a full Lint build.
No sign-up
Start immediately — no account, login, or email required.
Works anywhere
Runs in any modern browser, on desktop or mobile.
Frequently asked questions
What does Android Code Checker do?
Paste Kotlin or Java and catch common Android mistakes, anti-patterns, and code smells before they reach review.
How much code should I paste?
One file or a focused snippet works best. The checker scans patterns rather than building a whole project.
Is it free to use?
Yes. Every tool on APKLint is completely free, with no sign-up and no account.
How is my data handled?
What you submit is sent to our backend over an encrypted connection only to produce your result. It isn't written to file storage, used for analytics, or shared.
What should I paste in?
Paste one Java or Kotlin source file or snippet.
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