Android Gradle代码覆盖

我有一个简单的 android项目与测试用例.

ProjNameProject
--build.gradle
--ProjName
----build.gradle

我看到默认情况下android的新建系统默认提供基本的测试结果. (万岁！)

现在我也想看代码覆盖.我知道如何使用emma和Ant脚本进行设置,但是我不想在这里运行Ant脚本.我觉得这会打败我使用新的构建系统的目的.

我尝试过几个在Github上发现的Cobertura插件.特别是：
https://github.com/stevesaliman/gradle-cobertura-plugin

但是,如果我尝试在ProjName构建文件中使用该插件,那么我会收到关于java插件的错误.我在tools.android.com上阅读,添加java插件会产生这种行为.我没有应用它,所以cobertura插件必须是.如果我尝试使用主要构建文件中的插件,那么我看不到java错误,但现在我看到：

Could not find net.sourceforge.cobertura:cobertura:1.9.4.1.
    required by:
        :ProjNameProject:unspecified

我该怎么办？？

解决方法

JaCoCo支持被添加到Android毕业插件v0.10( http://tools.android.com/tech-docs/new-build-system).

Enable in the tested Build Type with testCoverageEnabled = true

android {
  jacoco {
    version = '0.6.2.201302030002'
  }
}

我能够在http://chrisjenx.com/gradle-robolectric-jacoco-dagger/之后获得JaCoCo的覆盖与Robolectric的合作.

apply plugin: 'android'
apply plugin: 'robolectric'
apply plugin: 'jacoco'

dependencies {
    compile filetree(dir: 'libs',include: '*.jar')
    compile 'com.android.support:appcompat-v7:19.1.+'

    androidTestCompile filetree(dir: 'libs/test',include: '*.jar')
    androidTestCompile 'junit:junit:4.11'
    androidTestCompile 'org.robolectric:robolectric:2.3'
    androidTestCompile 'com.squareup:fest-android:1.0.+'
}

robolectric {
    // Configure the set of classes for JUnit tests
    include '**/*Test.class'
    exclude '**/*AbstractRobolectricTestCase.class'

    // Configure max heap size of the test JVM
    maxHeapSize = "2048m"
}

jacoco {
    toolVersion = "0.7.1.201405082137"
}

//Define coverage source.
//If you have rs/aidl etc... add them here.
def coverageSourceDirs = [
    'src/main/java','src/gen'
]

...

// Add JaCoCo test reporting to the test task
// http://chrisjenx.com/gradle-robolectric-jacoco-dagger/
task jacocoTestReport(type: JacocoReport,dependsOn: "testDebug") {
    group = "Reporting"
    description = "Generate Jacoco coverage reports after running tests."
    reports {
        xml.enabled = true
        html.enabled = true
    }

    // Class R is used,but usage will not be covered,so ignore this class from report
    classDirectories = filetree(
        dir: './build/intermediates/classes/debug',excludes: ['**/R.class','**/R$*.class'
    ])
    sourceDirectories = files(coverageSourceDirs)
    executionData = files('build/jacoco/testDebug.exec')
}