Android升级gradle导致Jacoco报错

Jacoco配置代码如下：

apply plugin: 'jacoco'

tasks.withType(Test) {
    jacoco.includeNoLocationClasses = true
}

ext {
    getFileFilter = { ->
        def jacocoSkipClasses = null
        if (project.hasProperty('jacocoSkipClasses')) {
            jacocoSkipClasses = project.property('jacocoSkipClasses')
        }
        //忽略类文件配置
        def fileFilter = ['**/R.class', '**/R$*.class', '**/BuildConfig.*', '**/Manifest*.*', '**/*$ViewInjector*.*']
        if (jacocoSkipClasses != null) {
            fileFilter.addAll(jacocoSkipClasses)
        }
        return fileFilter
    }
}

task jacocoTestReport(type: JacocoReport, dependsOn: ['testCoverageDebugUnitTest', 'createCoverageDebugCoverageReport']) {
    group = "Reporting"
    description = "Generate Jacoco coverage reports"
    reports {
        xml {
            enabled = true
            xml.destination file("build/reports/jacoco/jacoco.xml")
        }
        html {
            enabled = true
            html.destination file("build/reports/jacoco")
        }
    }

    def fileFilter = project.getFileFilter()
    //检测覆盖率的class所在目录(以项目class所在目录为准)
    //gradle2.3 class所在目录
    def coverageDebugTree = fileTree(dir: "$project.buildDir/intermediates/classes/coverageDebug", excludes: fileFilter)
    //gradle3.2 class所在目录
    def coverageDebugTreeNewGradle = fileTree(dir: "$project.buildDir/intermediates/javac/debug/compileDebugJavaWithJavac/classes", excludes: fileFilter)
    def mainSrc = "$project.projectDir/src/main/java"

    //设置需要检测覆盖率的目录
    sourceDirectories = files([mainSrc])
    //兼容gradle版本
    classDirectories = files([coverageDebugTree, coverageDebugTreeNewGradle])
    //以下路径也需要检查
    executionData = fileTree(dir: project.buildDir, includes: [
            'jacoco/testCoverageDebugUnitTest.exec', 'outputs/code-coverage/debugAndroidTest/connected/coverage.ec'
    ])
}

问题1：

Cannot set the value of read-only property ‘classDirectories’ for task ‘:app:testNameOfMyFlavorDebugUnitTestCoverage’ of type org.gradle.testing.jacoco.tasks.JacocoReport.

这是因为gradle版本不兼容的问题，将上述代码中文件获取由“=”改为.setFrom()。

示例 ：sourceDirectories = files([mainSrc]) 改为 sourceDirectories.setfrom(files([mainSrc]))

问题2： Cannot set the value of read-only property ‘sourceDirectories’ for task ':app

这是依赖为引入的问题，解决方案是在项目的build.gradle中添加allprojects

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}

问题3： java.lang.NoClassDefFoundError: jdk/internal/reflect/GeneratedSerializationConstructorAccessor1

找不到类，解决方案就是将这个包去掉。

jacoco.excludes = ['jdk.internal.*']

问题4：

An exception occurred applying plugin request [id: ‘com.android.application‘]

>Failed to apply plugin 'com.android.internal.application'.

>The option 'android.enableUnitTestBinaryResource' is deprecated.

>The current default is 'false'

如下解决：

将本机gradle的配置文件，gradle.properties.中的

#android.enableUnitTestBinaryResources=true 注释掉