Question: What is `_not_` a good way to reuse Android code?

1. Use a common Gradle module shared by different Android projects.
2. Prefer to build custom views or fragments over activities.
3. Prefer to build activities instead of fragments.
4. Break down UI layouts into common elements and use `` to include them in other layout XML files.

Answer: The correct answer of the above question is Option C:Prefer to build activities instead of fragments.