What is the correct way to configure an Android project with submodules for use with the sonarqube gradle plugin?

yes its a bit tricky for a project with multiple modules,its achieved using proper wildcards.

follow these steps:

1. in the master module which contains all the sub-modules place thesonarqube.gradle file

2. in the build.gradle file of the master module add the maven plugin andclass dependencies

here is an example of two above mentioned files:

sonarqube.gradle

apply plugin: "org.sonarqube"sonarqube {//noinspection GroovyAssignabilityCheck    properties {//noinspection GroovyAssignabilityCheck        property "sonar.projectName", "appar"//noinspection GroovyAssignabilityCheck        property "sonar.projectVersion", "1.0"//noinspection GroovyAssignabilityCheck        property "sonar.analysis.mode", "publish"//noinspection GroovyAssignabilityCheck        property "sonar.language", "java"//noinspection GroovyAssignabilityCheck        property 'sonar.sourceEncoding', "UTF-8"//noinspection GroovyAssignabilityCheck        property "sonar.sources", "./src/main"   // noinspection GroovyAssignabilityCheck        property "sonar.exclusions", "src/main/java/com/appar/model/**, **/*Entity.java"//noinspection GroovyAssignabilityCheck        property "sonar.host.url", "http://192.168.21.33:9000"//noinspection GroovyAssignabilityCheck        property "sonar.login", "admin"//noinspection GroovyAssignabilityCheck        property "sonar.profile", "fulllint"//noinspection GroovyAssignabilityCheck        property 'sonar.import_unknown_files', true//noinspection GroovyAssignabilityCheck        property "sonar.android.lint.report", "./build/outputs/lint-results-debug.xml"//noinspection GroovyAssignabilityCheck        property "sonar.password", "admin" //noinspection GroovyAssignabilityCheck        property "sonar.java.binaries", "build/"    }}

build.gradle

buildscript {    repositories {        jcenter()        maven {            url "https://plugins.gradle.org/m2/"        }    }    dependencies {        classpath 'com.android.tools.build:gradle:2.2.2'        classpath "org.sonarsource.scanner.gradle:sonarqube-gradle-plugin:2.0.1"        classpath 'com.dicedmelon.gradle:jacoco-android:0.1.1'    }}allprojects {    repositories {        jcenter()    }}

then apply from sonarqube.gradle in build.gradle of separate modules

here is an example of build.gradle of one of the sub modules:

apply plugin: 'com.android.library'apply from: '../sonarqube.gradle'android {    compileSdkVersion 23    buildToolsVersion "23.0.3"    defaultConfig {        minSdkVersion 21        targetSdkVersion 23        versionCode 1        versionName "1.0"        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }        debug {            testCoverageEnabled = true        }    }}dependencies {    compile project(':java-library')    testCompile 'junit:junit:4.12'    testCompile "org.robolectric:robolectric:3.1.4"}

just put this line along with all other apply lines as shown in the above file

apply from: '../sonarqube.gradle'

after you apply sonarqube.gradle to all the build.gradle files in the sub modules.

just run the command

./gradlew sonarqube 

trust me the project will successfully get build and get pushed into sonarqube server and the error results will get shown

if you are using findbugs make the project before pushing or else build will fail because the findbugs needs the bytecode to analyse.

And dont use the property

//noinspection GroovyAssignabilityCheck            property "sonar.projectKey", "appar_app"

This sonar.projectKey property. This is used by SonarQube to identify each project (or module) in sonar database.So if all your modules have same projectKey value, SonarQube will update one single project in its database.Don't worry, this property is automatically set with the folder name of each module.