findbugs-android Gradle plugin creates FindBugs tasks for each variant of Android application or library module

Introduction

Static analysis tools are generous code reviewers you don’t have to pay wages to, buy expensive hardware for and find issues and bugs in your code. Being built on Java, Android projects have access to many of the static analysis tools from Java ecosystem.

Why

In order to create FindBugs report for Android projects, you need to create FindBugs tasks and configure them by providing paths to source code, compiled classes and classpath. It can be troublesome since Android projects can have different flavors and build types, thus requiring additional paths to be set. This plugin provides those tasks already configured for you.

In addition, the plugin automatically excludes generated classes from Android databinding library, android resource, Butterknife and Dagger 2. If you want more added to this list or want it configurable, please open an issue.

Usage

Apply the plugin after the Android gradle plugin. The FindBugs tasks are already hooked to the check task.

buildscript {
  repositories {
    jcenter()
  }
  dependencies {
    // ...
    classpath 'com.chaitanyapramod.gradle:findbugs-android:1.0'
  }
}

apply plugin: 'com.android.application'
apply plugin: 'com.chaitanyapramod.findbugs-android'

android {
  // ...
  buildTypes {
      debug {}
      release {}
  }
}

This would create the following Gradle tasks:

• findbugsDebug
• findbugsRelease

Note that these findbugs tasks are also hooked to check task.

Configuration

Use the standard findbugs extension to configure the FindBugs tasks

buildscript {
  repositories {
    jcenter()
  }
  dependencies {
    // ...
    classpath 'com.chaitanyapramod.gradle:findbugs-android:1.0'
  }
}

apply plugin: 'com.android.application'
apply plugin: 'com.chaitanyapramod.findbugs-android'

findbugs {
  toolVersion '3.0.1'
  ignoreFailures true
  effort 'max'
  reportLevel 'high'
  excludeBugsFilter = file("$rootProject.projectDir/config/findbugs/excludeBugsFilter.xml")
}

android {
  // ...
  buildTypes {
      debug {}
      release {}
  }
}

Report Format

By default, XML reports are generated. You can add the following snippet to get HTML reports

tasks.withType(FindBugs) {
    reports {
        xml.enabled = false
        html.enabled = true
    }
}

Contributing

Contributions are welcome. Contributers will find looking through Gradle sources of the classes FindBugs, FindBugsExtension and FindBugsPlugin useful.