Rename Android APK's to Something Useful

build.gradle

/* put this in your application's build.gradle after the android {} block
 * output is in this format: "<projectName>-<buildType>-v<versionName>-<versionCode>.apk"
 * e.g. "materiyolo-debug-v5.0.0-12345.apk"
 * also, supports injecting jenkins ci's build number into apk, if available
 * e.g. "materiyolo-debug-v5.0.0-12345-b6789.apk"
 * you must specify your versionName and versionCode in your build.gradle for this to work
 * see: http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Manifest-entries */

// change this to whatever your app's name is...
project.archivesBaseName = 'materiyolo'

android.applicationVariants.all { variant ->
    renameApk(variant)
}

def renameApk(variant) {
    def apkPath = variant.packageApplication.outputFile.parentFile
    def baseName = project.archivesBaseName

    // if it's a release build, the type is implicit, imo, so add it otherwise
    if (variant.name != 'release') {
        baseName += "-${variant.buildType.name}"
    }

    // add version name and version code
    baseName += "-v${variant.mergedFlavor.versionName}-${variant.mergedFlavor.versionCode}"

    // if built on jenkins ci, add jenkins build number:
    def buildNumber = System.getenv('BUILD_NUMBER')
    if (buildNumber && buildNumber.size() > 0) {
        baseName += "-b${buildNumber}"
    }

    // if the variant will not be zipAligned, specify that
    if (!variant.zipAlign) {
        baseName += '-unaligned'
    }

    // set the output file
    variant.outputFile = new File(apkPath, "${baseName}.apk");
}

Same for me:

• What went wrong:
  A problem occurred configuring project ':client'.

  Could not find property 'packageApplication' on com.android.build.gradle.internal.api.ApplicationVariantImpl_Decorated@267d9cc0.