[android]ERROR: Please define "VERSION_NAME" in your gradle.properties file

Recently,i start to learn android development. I want develop an app with audio/video stream transform function.So i tried to import the VLC module to receive the streaming data.

The Console shows error when I import the VLC module.

//the errors console shows
ERROR: Please define "VERSION_NAME" in your gradle.properties file
**Open File**

I click the open file .The gradle configure file opens in IDE.The focus is on the 3rd lines which shows 'apply plugin: "com.vanniktech.maven.publish"'

//gradle configure file
apply plugin: 'com.android.library'
apply plugin: 'com.github.dcendents.android-maven'
apply plugin: "com.vanniktech.maven.publish"

def abi = System.getenv('GRADLE_ABI')?.toLowerCase()
def vlcSrcDirs = System.getenv('GRADLE_VLC_SRC_DIRS')
ext {
    library_version = "$rootProject.ext.libvlcVersion"
}
android {

    defaultConfig {
        compileSdkVersion rootProject.ext.compileSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        minSdkVersion rootProject.ext.minSdkVersion
        resValue "string", "build_vlc_revision", vlcRevision()
        tasks.whenTaskAdded { task ->
            if (task.name.startsWith('merge')) {
                task.dependsOn hrtfsCopy
                task.dependsOn luaPlaylistCopy
                task.dependsOn luaMetaCopy
                task.dependsOn luaModuleCopy
            }
        }

    }

    sourceSets {
        main {
            jni.srcDirs = [] // Prevent gradle from building native code with ndk; we have our own Makefile for it.
            jniLibs.srcDirs = [ 'jni/libs' ]
            jniLibs.srcDirs += "$vlcSrcDirs"
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets' ]
        }
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
        dev {
            initWith debug
            matchingFallbacks = ['debug']
        }
    }

    // Make per-variant version code
    libraryVariants.all { variant ->
        //Custom APK name
        variant.outputs.each { output ->
            if (output.outputFileName != null && output.outputFileName.endsWith('.aar')) {
                output.outputFileName = "libvlc-${abi}-${library_version}.aar"
            }
        }
    }

    task hrtfsCopy(type: Copy) {
        project.logger.lifecycle('hrtfsCopy')
        from '../vlc/share/hrtfs'
        into 'assets/hrtfs'
    }

    task luaPlaylistCopy(type: Copy) {
        from '../vlc/share/lua/playlist'
        into 'assets/lua/playlist'
        exclude '**/*.txt'
    }

    task luaModuleCopy(type: Copy) {
        from '../vlc/share/lua/modules'
        into 'assets/lua/modules'
        exclude '**/*.txt'
    }

    task luaMetaCopy(type: Copy) {
        from '../vlc/share/lua/meta'
        into 'assets/lua/meta'
        exclude '**/*.txt'
    }
}

clean {
    delete 'build', 'jni/libs', 'jni/obj'
}

dependencies {

    api "androidx.annotation:annotation:$rootProject.ext.androidxAnnotationVersion"
    api "androidx.legacy:legacy-support-v4:$rootProject.ext.androidxLegacyVersion"
}

def vlcRevision() {
    def vlc = new ByteArrayOutputStream()
    exec {
        commandLine 'git', 'rev-parse', '--short', 'HEAD'
        standardOutput = vlc
    }
    return vlc.toString()
}

mavenPublish {
    releaseSigningEnabled = false
}

apply from: '../buildsystem/publish.gradle'

So, how can i edit the gradle configure file?