android studio 3.1: build:gradle:3.1.0 - Absolute path are not supported when setting an output file name

Question

When I use Android Studio 3.0 and I use the next version of Android Gradle Plugin in project/build.gradle:

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Answer 1

I think using "./../../../" is bad solution... I use common gradle script for several projects and I want to make code to be independency from depth of output dir.

After some researching I found this solution for gradle plugin 3.1.2:

applicationVariants.all { variant ->
    variant.outputs.all { output ->
        def relativeRootDir = output.packageApplication.outputDirectory.toPath()
                 .relativize(rootDir.toPath()).toFile()
        output.outputFileName = new File( "$relativeRootDir/release", newOutputName)
    }
}

Answer 2

Use variant.packageApplicationProvider.get().outputDirectory to avoid warning "variantOutput.getPackageApplication() is obsolete"

applicationVariants.all { variant ->
    variant.outputs.each { output ->
        variant.packageApplicationProvider.get().outputDirectory = new File(
            project.rootDir.absolutePath + "/release")

        def releaseFileName = "${rootProject.name}_${defaultConfig.versionName}.apk"
        output.outputFileName = releaseFileName.toLowerCase()
    }
}

Answer 3

I experienced the same issue. I haven't put the effort in to figure out exactly what's happened but there's a simple fix.

Just remove the root from your new file and trust the framework, i.e. change your code to

outputFileName = new File("release", releaseFileName.toLowerCase())

That was sufficient for us. We don't care about where the apk goes, only the name of the apk for a particular flavour.

Answer 4

The simplest solution for Android Gradle plugin 3.4.0+ is as below:

Assemble/concatenate your new file name:

def newFileName = "assemble-your-new-file-name"

Then, simply assign it back.

outputFileName = newFileName

More specifically is as following

android.applicationVariants.all { variant ->
    variant.outputs.each { output ->
        // Redirect your apks to new defined location to outputDirPath
        def outputDirPath = new File("${project.rootDir.absolutePath}/apks/${variant.flavorName}/${variant.buildType.name}")
        variant.packageApplicationProvider.get().outputDirectory = outputDirPath

        def apkFileName = "${rootProject.name}_${android.defaultConfig.versionName}.apk"
        output.outputFileName = apkFileName // directly assign the new name back to outputFileName
    }
}

Answer 5

I found solution:

def releaseFileName = "${rootProject.name}_${defaultConfig.versionName}.apk"
outputFileName = "/../../../../../release/" + releaseFileName.toLowerCase()

And now output file app-release.apk success created in MyProject/release/app-relese.apk

Answer 6

If you want to append the version name and version code do it like:

applicationVariants.all { variant ->
        variant.outputs.all {
            def versionName = variant.versionName
            def versionCode = variant.versionCode
            def variantName = variant.name
            outputFileName = "${rootProject.name}" + '_' + variantName + '_' + versionName + '_' + versionCode + '.apk'
        }
    }