Unity as an AR library in an Android Studio project - Could not find :android.arch.lifecycle.runtime-1.0.0:

Question

I am trying to integrate a Unity3D app into my Android app by following the instructions outlined here: https://github.com/Unity-Technologies/uaal-ar-example/blob/master/AndroidProject/README.txt. However, I get the following error:

Could not find :android.arch.lifecycle.runtime-1.0.0:.
Required by:
    project :app > project :unityLibrary
Search in build.gradle files

This is what the app level build.gradle for my unityLibrary looks like:

// GENERATED BY UNITY. REMOVE THIS COMMENT TO PREVENT OVERWRITING WHEN EXPORTING AGAIN

apply plugin: 'com.android.library'


dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation(name: 'android.arch.lifecycle.runtime-1.0.0', ext:'aar')
    implementation(name: 'arcore_client', ext:'aar')
    implementation(name: 'ARPresto', ext:'aar')
    implementation(name: 'com.android.support.support-compat-26.1.0', ext:'aar')
    implementation(name: 'com.android.support.support-core-ui-26.1.0', ext:'aar')
    implementation(name: 'com.android.support.support-core-utils-26.1.0', ext:'aar')
    implementation(name: 'com.android.support.support-fragment-26.1.0', ext:'aar')
    implementation(name: 'com.android.support.support-media-compat-26.1.0', ext:'aar')
    implementation(name: 'com.android.support.support-v4-26.1.0', ext:'aar')
    implementation(name: 'com.google.android.gms.play-services-auth-base-16.0.0', ext:'aar')
    implementation(name: 'com.google.android.gms.play-services-base-16.0.1', ext:'aar')
    implementation(name: 'com.google.android.gms.play-services-basement-16.0.1', ext:'aar')
    implementation(name: 'com.google.android.gms.play-services-tasks-16.0.1', ext:'aar')
    implementation(name: 'unityandroidpermissions', ext:'aar')
    implementation(name: 'UnityARCore', ext:'aar')
}

android {
    compileSdkVersion 30
    buildToolsVersion '30.0.2'

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    defaultConfig {
        minSdkVersion 30
        targetSdkVersion 30
        ndk {
            abiFilters 'armeabi-v7a', 'arm64-v8a'
        }
        versionCode 1
        versionName '0.1'
        consumerProguardFiles 'proguard-unity.txt', 'proguard-user.txt'
    }

    lintOptions {
        abortOnError false
    }

    aaptOptions {
        noCompress = ['.ress', '.resource', '.obb'] + unityStreamingAssets.tokenize(', ')
        ignoreAssetsPattern = "!.svn:!.git:!.ds_store:!*.scc:.*:!CVS:!thumbs.db:!picasa.ini:!*~"
    }

    packagingOptions {
        doNotStrip '*/armeabi-v7a/*.so'
        doNotStrip '*/arm64-v8a/*.so'
    }
}

Here is what the settings.gradle for my Android project looks like:

include ':app'
include ':renderscript-toolkit'
include ':PaintView'
include ':LocationProvider'
include ':GestureListener'
include ':MathForAr'
include ':unityLibrary'
project(':unityLibrary').projectDir=new File('/home/muhammadmehdi/ALL_PROJECTS/memex/memex_unity_app/unityLibrary')

And here is what the build.gradle for my app looks like

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
apply plugin: 'com.google.firebase.crashlytics'

def setVersionName = { ->
    if (project.hasProperty("androidVersionName")) {
        println("Replacing versionName with supplied build parameter: " +
                "$androidVersionName")
        return androidVersionName
    } else {
        return "1.0"
    }
}

android {
    compileSdkVersion 31
    buildToolsVersion '30.0.3'
    defaultConfig {
        applicationId "com.memex.eu"
        minSdkVersion 30

        // this is because of the unity app
        targetSdkVersion 30
        ndk {
            abiFilters 'armeabi-v7a', 'arm64-v8a'
        }
        renderscriptTargetApi 18
        renderscriptSupportModeEnabled true
        versionCode 1
        versionName setVersionName()
        javaCompileOptions {
            annotationProcessorOptions {
                arguments += ["room.schemaLocation": "$projectDir/schemas".toString()]
            }
        }
    }
    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }
    lintOptions {
        abortOnError false
    }
    packagingOptions {
        doNotStrip '*/armeabi-v7a/*.so'
        doNotStrip '*/arm64-v8a/*.so'
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    buildFeatures {
        viewBinding true
    }
    androidResources {
        ignoreAssetsPattern '!.svn:!.git:!.ds_store:!*.scc:.*:!CVS:!thumbs.db:!picasa.ini:!*~'
    }
}

dependencies {
    implementation project(":renderscript-toolkit")
    implementation project(path: ':PaintView')
    implementation project(path: ':LocationProvider')
    implementation project(path: ':GestureListener')
    implementation project(path: ':MathForAr')
    implementation project(':unityLibrary')
    implementation 'com.google.ar:core:1.29.0'
    implementation 'com.gorisse.thomas.sceneform:sceneform:1.20.4'
    implementation 'com.google.android.gms:play-services-maps:18.0.2'
    implementation 'com.google.android.gms:play-services-places:17.0.0'
    implementation 'androidx.appcompat:appcompat:1.4.1'
    implementation "androidx.preference:preference:1.2.0"
    implementation 'com.google.android.material:material:1.5.0'

    implementation 'com.github.martin-stone:hsv-alpha-color-picker-android:3.0.1'

    implementation "androidx.core:core:1.7.0"
    implementation 'com.google.code.gson:gson:2.8.7'
    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
    implementation 'com.squareup.okhttp3:okhttp:4.9.0'
    implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'

    // ViewModel
    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.1"
    // LiveData
    implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.4.1"

    // Saved state module for ViewModel
    implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:2.4.1"

    // alternately - if using Java8, use the following instead of lifecycle-compiler
    implementation "androidx.lifecycle:lifecycle-common-java8:2.4.1"

    implementation "androidx.room:room-runtime:2.4.1"
    annotationProcessor "androidx.room:room-compiler:2.4.1"

    // Dagger2 Core
    implementation 'com.google.dagger:dagger:2.40.2'
    annotationProcessor 'com.google.dagger:dagger-compiler:2.40.2'

    // Dagger Android
    implementation "com.google.dagger:dagger-android:2.40.2"
    implementation "com.google.dagger:dagger-android-support:2.40.2"
    annotationProcessor "com.google.dagger:dagger-android-processor:2.40.2"

    // Import the BoM for the Firebase platform
    implementation platform('com.google.firebase:firebase-bom:29.0.2')

    // Declare the dependencies for the Crashlytics and Analytics libraries
    // When using the BoM, you don't specify versions in Firebase library dependencies
    implementation 'com.google.firebase:firebase-crashlytics'
    implementation 'com.google.firebase:firebase-analytics'

    // debugImplementation because LeakCanary should only run in debug builds.
    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.8.1'

    implementation 'com.android.support:support-annotations:28.0.0'
}