format_output_name.groovy

// format name
android.applicationVariants.all { variant ->
    variant.outputs.each { output ->
        if (output.outputFile != null && output.outputFile.name.endsWith('.apk')) {
            def outputName = "Danjuan-" + versionName + "-" + output.outputFile.name
			outputName = outputName.replace(' ', '')
            def file = output.outputFile
            output.outputFile = new File(file.parent, outputName)
        }
    }
}

gradle_suffix.groovy

// From http://stackoverflow.com/questions/19172565/how-append-date-build-to-versionnamesuffix-on-gradle
beta {
    packageNameSuffix ".beta"
    versionNameSuffix "-beta" + "-build" + getDate()
    signingConfig signingConfigs.debug
}

def getDate() {
    def date = new Date()
    def formattedDate = date.format('yyyyMMddHHmmss')
    return formattedDate
}

skip_lint_increment.groovy

// skip the lint check permanently from your incremental builds
tasks.whenTaskAdded { task ->
    if (task.name.equals("lint")) {
        task.enabled = false
    }
}