Gradle应用程序变体合并资产不起作用。

Question

我正在尝试使用Gradle的applicationVariants mergeAssets任务从我的apk中删除一些未使用的资产文件。即使我能够打印出"这行被打印了"，但当应用程序变体为“run”时，variant.mergeAssets.doFirst {}似乎并没有被调用，因为在我的Gradle控制台中从未看到输出"这行未被打印出来"。 我试图删除的资源也没有被删除，但是似乎从未执行删除它的代码。我是否做错了什么？ 我已经尝试将整个android.applicationVariants任务移动到buildTypes之外，我尝试将其嵌套在release{}中...我所尝试的一切似乎都不起作用。

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()
                    };
                }
            }
        }
    }
}

以下是Gradle控制台输出，为了简洁起见：

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

- Tim Malseed

Answer 1

这行代码总是会被打印，因为它在配置阶段执行。(请参见Gradle用户指南)

你的Gradle控制台输出显示所有合并*资源任务都被跳过了，因为它们的输入和输出自上次执行任务以来没有改变，所以Gradle不会再次执行它们。不幸的是，Gradle还不够聪明，不知道您已更改了任务实现，因此不应跳过任务。

尝试运行clean命令以强制执行该任务。

- Perryn Fowler