#Below is the example for how to make gradle to have apk file name with version.


apply plugin: 'com.android.application'

android {
    signingConfigs {
        config {
            ... SOMETHING LIKE RELEASE SIGNING CONFIG ...
        }
    }

    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    project.archivesBaseName = "LMS"; // HERE YOU NEED TO PROVIDE PROJECT NAME (BASE NAME)

    signingConfigs {
        release {
            keyAlias 'ALIAS_NAME'
            keyPassword 'ALIAS_PASWORD'
            storeFile file('C:/../../.android/KEYSTORE_NAME.keystore')
            storePassword 'KEYSTORE_PASSWORD'
        }
    }
    defaultConfig {
        ...
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

            // HERE YOU NEED TO DEFINE THE APK FILE NAME AS LIKE BELOW
            applicationVariants.all { variant ->
                variant.outputs.each{ output ->
                    output.outputFile = new File(output.outputFile.parent,output.outputFile.name.replace(".apk","_v" + defaultConfig.versionName + ".apk" ))
                }
            }
        }
    }
    productFlavors {
        staging {
            ...
        }
        live {
            ...
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    ...
}