A default build.gradle file for Android apps that includes dependency injection support, headless testing and mocks for CI and AssertJ to make testing sweeter.

build.gradle

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:0.13.3'
        classpath 'com.jakewharton.sdkmanager:gradle-plugin:0.12.0'
        classpath 'org.robolectric:robolectric-gradle-plugin:0.13.0'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.4'
    }
}

apply plugin: 'android-sdk-manager'
apply plugin: 'com.android.application'
apply plugin: 'robolectric'
apply plugin: 'com.neenbedankt.android-apt'


dependencies {
    apt 'com.squareup.dagger:dagger-compiler:1.2.2'
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.jakewharton:butterknife:5.1.2'
    compile 'com.squareup.dagger:dagger:1.2.2'
    provided 'com.squareup.assertj:assertj-android:1.0.0'

    androidTestApt 'com.squareup.dagger:dagger-compiler:1.2.2'
    androidTestCompile 'com.squareup.dagger:dagger-compiler:1.2.2'
    androidTestCompile 'junit:junit:4.11'
    androidTestCompile 'org.robolectric:robolectric:2.3'
    androidTestCompile 'org.mockito:mockito-core:1.10.8'
}

android {
    compileSdkVersion 20
    buildToolsVersion "20"

    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 20
    }

    buildTypes {
        release {
            runProguard true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    lintOptions {
        quiet true
        abortOnError false
    }
}

robolectric {
    include '**/*Test.class'
    ignoreFailures true
}

Extended to add in Android SDK bootstrapping of required dependencies where required.