Using SonarQube for Code Quality Management in Android Projects

SonarQube (formerly Sonar) is an open‑source code‑quality management platform that continuously analyzes and measures code quality across a portfolio of projects. It can be extended via plugins to integrate various testing and analysis tools, quantifying quality changes for many programming languages, including Java, Objective‑C, C/C++, C#, PHP, Python, Web, PL/SQL, and more.

For Android (Java) projects, Sonar provides a Java Plugin and Java‑specific plugins that implement most FindBugs, PMD, Checkstyle, and Android Lint rules. The platform can detect code‑quality issues in several key areas:

Complexity : distribution of method, class, and file complexity.

Duplication : locations with severe code duplication.

Unit‑test coverage : statistics and visualization of test coverage (mainly for Java projects).

Code standards : enforcement of coding rules via PMD, Checkstyle, etc.

Comments : identification of missing or excessive comments.

Potential bugs : detection of likely bugs using PMD, FindBugs, and similar tools.

Architecture design : analysis of coupling, dependencies, architectural rules, and management of third‑party JARs.

Sonar offers strong IDE support; developers can install Sonar plugins for Eclipse and Android Studio to view inspection results in real time, receiving immediate feedback on newly introduced defects and quality issues. It also integrates with common continuous‑integration tools, allowing seamless use within CI pipelines. In our project we added Sonar to a Jenkins automated workflow, where the dashboard, issues view, time‑machine, and defect‑tracking features provide clear visualizations of technical debt and enable rapid remediation. The screenshots below illustrate how repeated issues and complexity gradually decreased after adopting Sonar.

For more details, visit the official SonarQube website.