分级应用程序变体mergeAssets无法工作

Question

我试图使用gradle applicationVariants mergeAssets任务从apk中删除一些未使用的资产文件。

即使我能够打印行“此行打印”，当应用程序变量是'run‘时，variant.mergeAssets.doFirst {}似乎没有被调用，因为我从未在我的gradle控制台中看到输出“此行没有打印”。我试图删除的资产也没有被移除，但似乎从未执行过删除它的代码。

我做错了什么吗？我尝试将整个android.applicationVariants任务移出buildTypes之外，我尝试在release{}中嵌套它。我试过的东西似乎都不起作用。

buildTypes {
    release {
        runProguard true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), file('proguard-project.txt')
        signingConfig signingConfigs.release
    }

    publicBeta.initWith(buildTypes.release)
    publicBeta {
        runProguard true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), file('proguard-project.txt')
    }

    android.applicationVariants.all { variant ->
        println 'this line is printed'
        variant.mergeAssets.doFirst {
            println 'this line is never printed'
            File fonts = file("${rootDir}/build/intermediates/exploded-aar/com.github.johnkil.android-robototextview/robototextview/2.0.1/assets/fonts")
            if (fonts.exists()) {
                for (File file : fonts.listFiles()) {
                    if (file.getName().contains("RobotoSlab")) {
                        println("delete " + file.getName() + " font")
                        file.delete()
                    };
                }
            }
        }
    }
}

为了简洁起见，下面是gradle控制台的输出：

Executing tasks: [:shuttle_paid:assembleRelease]

Configuration on demand is an incubating feature.
Relying on packaging to define the extension of the main artifact has been deprecated and is scheduled to be removed in Gradle 2.0
this line is printed
this line is printed
this line is printed
:shuttle_library:compileLint
:shuttle_library:copyReleaseLint UP-TO-DATE
:shuttle_library:preBuild
:shuttle_library:preReleaseBuild
:shuttle_library:checkReleaseManifest
:shuttle_library:preDebugBuild
:shuttle_library:preDebugTestBuild
:libraries:castcompanionlibrary-android:compileLint
:libraries:castcompanionlibrary-android:copyReleaseLint UP-TO-DATE
:libraries:castcompanionlibrary-android:preBuild
:libraries:castcompanionlibrary-android:preReleaseBuild
:libraries:castcompanionlibrary-android:checkReleaseManifest
:libraries:castcompanionlibrary-android:preDebugBuild
:libraries:castcompanionlibrary-android:preDebugTestBuild
:libraries:castcompanionlibrary-android:prepareComAndroidSupportAppcompatV72000Library UP-TO-DATE
:libraries:castcompanionlibrary-android:prepareComAndroidSupportMediarouterV72000Library UP-TO-DATE
:libraries:castcompanionlibrary-android:prepareComAndroidSupportSupportV42000Library UP-TO-DATE
:libraries:castcompanionlibrary-android:prepareComGoogleAndroidGmsPlayServices5077Library UP-TO-DATE
:libraries:castcompanionlibrary-android:prepareReleaseDependencies
:libraries:castcompanionlibrary-android:compileReleaseAidl UP-TO-DATE
:libraries:castcompanionlibrary-android:compileReleaseRenderscript UP-TO-DATE
:libraries:castcompanionlibrary-android:generateReleaseBuildConfig UP-TO-DATE
:libraries:castcompanionlibrary-android:generateReleaseAssets UP-TO-DATE
:libraries:castcompanionlibrary-android:mergeReleaseAssets UP-TO-DATE
:libraries:castcompanionlibrary-android:generateReleaseResValues UP-TO-DATE
:libraries:castcompanionlibrary-android:generateReleaseResources UP-TO-DATE
:libraries:castcompanionlibrary-android:mergeReleaseResources UP-TO-DATE
:libraries:castcompanionlibrary-android:processReleaseManifest UP-TO-DATE
:libraries:castcompanionlibrary-android:processReleaseResources UP-TO-DATE
:libraries:castcompanionlibrary-android:generateReleaseSources UP-TO-DATE
:libraries:castcompanionlibrary-android:compileReleaseJava UP-TO-DATE
:libraries:castcompanionlibrary-android:extractReleaseAnnotations UP-TO-DATE
:libraries:castcompanionlibrary-android:mergeReleaseProguardFiles UP-TO-DATE
:libraries:castcompanionlibrary-android:processReleaseJavaRes UP-TO-DATE
:libraries:castcompanionlibrary-android:packageReleaseJar UP-TO-DATE
:libraries:castcompanionlibrary-android:compileReleaseNdk UP-TO-DATE
:libraries:castcompanionlibrary-android:packageReleaseJniLibs UP-TO-DATE
:libraries:castcompanionlibrary-android:packageReleaseLocalJar UP-TO-DATE
:libraries:castcompanionlibrary-android:packageReleaseRenderscript UP-TO-DATE
:libraries:castcompanionlibrary-android:packageReleaseResources UP-TO-DATE
:libraries:castcompanionlibrary-android:bundleRelease UP-TO-DATE
:shuttle_library:prepareComAndroidSupportAppcompatV72000Library UP-TO-DATE
:shuttle_library:prepareComAndroidSupportMediarouterV72000Library UP-TO-DATE
:shuttle_library:prepareComAndroidSupportSupportV42000Library UP-TO-DATE
:shuttle_library:prepareComGithubJohnkilAndroidRobototextviewRobototextview210Library UP-TO-DATE
:shuttle_library:prepareComGoogleAndroidGmsPlayServices5077Library UP-TO-DATE
:shuttle_library:prepareComLarswerkmanHoloColorPicker14Library UP-TO-DATE
:shuttle_library:prepareShuttleLibrariesCastcompanionlibraryAndroidUnspecifiedLibrary UP-TO-DATE
:shuttle_library:prepareReleaseDependencies
:shuttle_library:compileReleaseAidl UP-TO-DATE
:shuttle_library:compileReleaseRenderscript UP-TO-DATE
:shuttle_library:generateReleaseBuildConfig UP-TO-DATE
:shuttle_library:generateReleaseAssets UP-TO-DATE
:shuttle_library:mergeReleaseAssets UP-TO-DATE
:shuttle_library:generateReleaseResValues UP-TO-DATE
:shuttle_library:generateReleaseResources UP-TO-DATE
:shuttle_library:mergeReleaseResources UP-TO-DATE
:shuttle_library:processReleaseManifest UP-TO-DATE
:shuttle_library:processReleaseResources UP-TO-DATE
:shuttle_library:generateReleaseSources UP-TO-DATE
:shuttle_library:compileReleaseJava UP-TO-DATE
:shuttle_library:extractReleaseAnnotations UP-TO-DATE
:shuttle_library:mergeReleaseProguardFiles UP-TO-DATE
:shuttle_library:processReleaseJavaRes UP-TO-DATE
:shuttle_library:packageReleaseJar UP-TO-DATE
:shuttle_library:compileReleaseNdk UP-TO-DATE
:shuttle_library:packageReleaseJniLibs UP-TO-DATE
:shuttle_library:packageReleaseLocalJar UP-TO-DATE
:shuttle_library:packageReleaseRenderscript UP-TO-DATE
:shuttle_library:packageReleaseResources UP-TO-DATE
:shuttle_library:bundleRelease UP-TO-DATE
:shuttle_paid:preBuild
:shuttle_paid:preReleaseBuild
:shuttle_paid:checkReleaseManifest
:shuttle_paid:preDebugBuild
:shuttle_paid:prePublicBetaBuild
:shuttle_paid:prepareComAndroidSupportAppcompatV72000Library UP-TO-DATE
:shuttle_paid:prepareComAndroidSupportMediarouterV72000Library UP-TO-DATE
:shuttle_paid:prepareComAndroidSupportSupportV42000Library UP-TO-DATE
:shuttle_paid:prepareComGithubJohnkilAndroidRobototextviewRobototextview210Library UP-TO-DATE
:shuttle_paid:prepareComGoogleAndroidGmsPlayServices5077Library UP-TO-DATE
:shuttle_paid:prepareComLarswerkmanHoloColorPicker14Library UP-TO-DATE
:shuttle_paid:prepareShuttleLibrariesCastcompanionlibraryAndroidUnspecifiedLibrary UP-TO-DATE
:shuttle_paid:prepareShuttleShuttle_libraryUnspecifiedLibrary UP-TO-DATE
:shuttle_paid:prepareReleaseDependencies
:shuttle_paid:compileReleaseAidl UP-TO-DATE
:shuttle_paid:compileReleaseRenderscript UP-TO-DATE
:shuttle_paid:generateReleaseBuildConfig UP-TO-DATE
:shuttle_paid:generateReleaseAssets UP-TO-DATE
:shuttle_paid:mergeReleaseAssets UP-TO-DATE
:shuttle_paid:generateReleaseResValues UP-TO-DATE
:shuttle_paid:generateReleaseResources UP-TO-DATE
:shuttle_paid:mergeReleaseResources UP-TO-DATE
:shuttle_paid:processReleaseManifest UP-TO-DATE
:shuttle_paid:processReleaseResources UP-TO-DATE
:shuttle_paid:generateReleaseSources UP-TO-DATE
:shuttle_paid:compileReleaseJava UP-TO-DATE
:shuttle_paid:lintVitalRelease
:shuttle_paid:compileReleaseNdk UP-TO-DATE
:shuttle_paid:proguardRelease UP-TO-DATE
:shuttle_paid:dexRelease UP-TO-DATE
:shuttle_paid:processReleaseJavaRes UP-TO-DATE
:shuttle_paid:validateReleaseSigning
:shuttle_paid:packageRelease UP-TO-DATE
:shuttle_paid:zipalignRelease UP-TO-DATE
:shuttle_paid:assembleRelease

BUILD SUCCESSFUL

Total time: 8.682 secs

Answer 1

打印的行将始终打印，因为它在配置阶段执行。(见分级用户指南 )

您的gradle控制台输出显示了作为最新版本跳过的所有合并*参考资料任务。这意味着自从上次执行任务以来，输入和输出都没有改变，所以gradle不再执行它们。不幸的是，Gradle还不够聪明，无法知道您已经更改了任务实现，并且它不应该跳过任务。

尝试运行清理程序，以强制任务运行。