Change gradle android apk name

build.gradle

android{
    ...
    def changeApkName = { variant ->
        variant.outputs.each { output ->
            def apk = output.outputFile;
            def addBrand = true
            def addTime = false
            def addGitBranch = true
            def addVersionCode = true
            def addVersionName = true

            def newName = "";
            if(addBrand){
                newName += rootProject.name
            }
            if(addGitBranch){
                newName +=  "-"+getGitRevParseInfo("--abbrev-ref")
            }
            if(addTime){
                newName += ("-"+new Date().format('h-m-aa'))
            }
            if(addVersionCode){
                newName += ("-v" + variant.mergedFlavor.versionCode)
            }
            if(addVersionName){
                newName += ("(" + variant.mergedFlavor.versionName + ")")
            }
            if(variant.buildType.name == "release"){
                newName += "-release.apk";
            }else{
                newName += ".apk";
            }
            if (!output.zipAlign) {
                newName = newName.replace(".apk", "-unaligned.apk");
            }
            output.outputFileName = newName;

            println 'INFO: Set outputFile to ' + output.outputFile + " for [" + output.name + "]"
        }
    }
    applicationVariants.all { variant ->
        variant.outputs.each { output ->
            changeApkName(variant)
        }
    }
    ...
}