Lint check for unused methods (command line)

Question

How can I achieve the same what is described in the following Stack Overflow question?

How can I find all unused methods of my project in the Android Studio IDEA?

Using the command line only?

./gradlew lint ...

exactly but which command after, I can't find in documentation what is responsible for unused methods in a command line — hhg, May 12 '17 at 14:33
anybody has an idea how to achieve that using a command line only? — hhg, May 31 '17 at 21:29

score 7 · Answer 1 · answered Aug 30 '20 at 09:40

If your project includes build variants, and you instead want to run the lint task for only a specific build variant, you must capitalize the variant name and prefix it with lint.

gradlew lintDebug

To learn more about running Gradle tasks from the command line, [read Build Your App from the Command Line.][1]

  [1]: https://developer.android.com/studio/build/building-cmdline

score 6 · Accepted Answer · answered Aug 26 '20 at 07:39

Run lint from the command line

You can use the Gradle wrapper to invoke the lint task for your project by entering one of the following commands from the root directory of your project:

On Windows:

gradlew lint

On Linux or Mac:

./gradlew lint

You should see output similar to the following:

> Task :app:lint
Ran lint on variant release: 5 issues found
Ran lint on variant debug: 5 issues found
Wrote HTML report to file:<path-to-project>/app/build/reports/lint-results.html
Wrote XML report to file:<path-to-project>/app/build/reports/lint-results.xml

When the lint tool completes its checks, it provides paths to the XML and HTML versions of the lint report. You can then navigate to the HTML report and open it in your browser, as shown in figure 2.

you can check the docs "Improve your code with lint checks"

score 2 · Answer 3 · answered Sep 01 '20 at 01:09

2

Maybe try a combination of ./gradlew lint with grep using the linux pipe symbol and filter out all of the issues related to unused methods.

./gradlew lint | grep 'unused' you can modify the grep string per your need.

answered Sep 01 '20 at 01:09

Muddassir Ahmed

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score 2 · Answer 4 · answered Sep 01 '20 at 14:58

If u IntelliJ there is simple trick to find unused methods:

To run it on whole project go to Analyze -> Run inspection by name..., type Unused declaration and select desired scope. Then carefully check output and mark some classes as entry points if needed.

Now you can select Unused declaration node in list and perform Safe delete action on all unused declarations at once.

OR use ProGuard from this thread: How to find unused/dead code in java projects

Proguard doesn't "find" unused code. It removes it. It's a different thing. — Pedro Oliveira, Apr 07 '22 at 11:07

Lint check for unused methods (command line)

4 Answers4