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How to add ARCore dependency type com.google.ar.core to AndroidManifest.xml in Android Studio

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I'm trying to upload my AR application to the Google Play Console and am getting errors with each attempt. The application is built in Unity with ARCore using gradle. I'm new to Android development and I'm trying to edit my AndroidManifest.xml but I think I am doing something wrong.
Initially I was trying to build an APK with split application binary in Unity, but was only allowed to export a .gradle file. So I've opened this in Android Studio and built an APK and AAB to upload to the Google Play Console.
The AAB file upload yielded this error:
The ARCore dependency type com.google.ar.core is missing from the AndroidManifest.xml file although the meta-data tag com.google.ar.core.min_apk_version has been specified.
I tried adding implementation 'com.google.ar:core:1.12.0' to the AndroidManifest dependencies, but the gradle project sync fails.
Do I need to edit the manifest further?
Any help is appreciated!
UPDATE: I have added the ARCore dependency in the gradle file and have tagged AR core in the manifest.
This is the .gradle file:
// GENERATED BY UNITY. REMOVE THIS COMMENT TO PREVENT OVERWRITING WHEN EXPORTING AGAIN
buildscript {
    repositories {
        google()
        jcenter()
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
allprojects {
    repositories {
        google()
        flatDir {
            dirs 'libs'
apply plugin: 'com.android.application'
dependencies {
    implementation 'com.google.ar:core:1.12.0'
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation(name: 'UnityARCore', ext:'aar')
    implementation(name: 'UnityChannel', ext:'aar')
    implementation(name: 'arcore_client', ext:'aar')
    implementation(name: 'nativeshare-release', ext:'aar')
    implementation(name: 'unityandroidpermissions', ext:'aar')
    implementation(name: 'unitygar', ext:'aar')
android {
    compileSdkVersion 29
    buildToolsVersion '29.0.2'
    defaultConfig {
        minSdkVersion 27
        targetSdkVersion 29
        applicationId 'com.TylerCalkin.OURARhug'
        ndk {
            abiFilters 'armeabi-v7a', 'x86'
        versionCode 1
        versionName '2.4'
    lintOptions {
        abortOnError false
    aaptOptions {
        noCompress '.unity3d', '.ress', '.resource', '.obb'
    buildTypes {
        debug {
            minifyEnabled true
            useProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-unity.txt'
            jniDebuggable true
        release {
            minifyEnabled true
            useProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-unity.txt'
            signingConfig signingConfigs.debug
    packagingOptions {
        doNotStrip '*/armeabi-v7a/*.so'
        doNotStrip '*/x86/*.so'
  Manifest merger failed : Attribute meta-data#com.google.ar.core.min_apk_version@value value=(190805000) from [com.google.ar:core:1.12.0] AndroidManifest.xml:35:13-38
      is also present at [:arcore_client:] AndroidManifest.xml:43:13-38 value=(180525000).
      Suggestion: add 'tools:replace="android:value"' to  element at AndroidManifest.xml:33:9-35:41 to override.
but my Merged Manifest tab lists only one Manifest Source and some Other Manifest Files not contributing any elements. I am trying to add 
  tools:replace="android:value"
But I can only find a single manifest in my project, and adding it yields additional errors when I try to build an APK.
Can anyone direct me to exactly where and how to fix my merge conflict?
For example when I add it to my manifest like this:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.Name.Appname" xmlns:tools="http://schemas.android.com/tools" android:installLocation="preferExternal">
  <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
  <application android:theme="@style/UnityThemeSelector" android:icon="@mipmap/app_icon" android:label="@string/app_name" android:isGame="true" android:roundIcon="@mipmap/app_icon_round" >
    <activity android:label="@string/app_name" android:screenOrientation="fullSensor" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale|layoutDirection|density" android:hardwareAccelerated="false" android:name="com.Name.Appname.UnityPlayerActivity">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
        <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
      </intent-filter>
      <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
    </activity>
    <meta-data android:name="unity.tango-enable" android:value="True" />
    <meta-data android:name="unityplayer.SkipPermissionsDialog" android:value="true" />
    <meta-data android:name="unity.build-id" android:value="92706e04-4de4-49cc-a450-6e2e2712e07a" />
    <meta-data android:name="unity.splash-mode" android:value="0" />
    <meta-data android:name="unity.splash-enable" android:value="True" />
    <meta-data android:name="com.google.ar.core" android:value="required" />
    <meta-data tools:replace="android:value" />
  </application>
  <uses-feature android:glEsVersion="0x00020000" />
  <uses-permission android:name="android.permission.CAMERA" />
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
  <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
  <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
  <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
</manifest>
java.lang.RuntimeException: Manifest merger failed with multiple errors, see logs
	at com.android.builder.core.AndroidBuilder.mergeManifestsForApplication(AndroidBuilder.java:558)
	at com.android.build.gradle.tasks.ProcessApplicationManifest.doFullTaskAction(ProcessApplicationManifest.java:208)
	at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:106)
	at sun.reflect.GeneratedMethodAccessor516.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:103)
	at org.gradle.api.internal.project.taskfactory.IncrementalTaskInputsTaskAction.doExecute(IncrementalTaskInputsTaskAction.java:46)
	at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:41)
	at org.gradle.api.internal.project.taskfactory.AbstractIncrementalTaskAction.execute(AbstractIncrementalTaskAction.java:25)
	at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:28)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$5.run(ExecuteActionsTaskExecuter.java:404)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:92)
	at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:393)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:376)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.access$200(ExecuteActionsTaskExecuter.java:80)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.execute(ExecuteActionsTaskExecuter.java:213)
	at org.gradle.internal.execution.steps.ExecuteStep.lambda$execute$0(ExecuteStep.java:32)
	at java.util.Optional.map(Optional.java:215)
	at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:32)
	at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:26)
	at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:58)
	at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:35)
	at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:48)
	at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:33)
	at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:39)
	at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:73)
	at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:54)
	at org.gradle.internal.execution.steps.CatchExceptionStep.execute(CatchExceptionStep.java:35)
	at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:51)
	at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:45)
	at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:31)
	at org.gradle.internal.execution.steps.CacheStep.executeWithoutCache(CacheStep.java:201)
	at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:70)
	at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:45)
	at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:49)
	at org.gradle.internal.execution.steps.StoreSnapshotsStep.execute(StoreSnapshotsStep.java:43)
	at org.gradle.internal.execution.steps.StoreSnapshotsStep.execute(StoreSnapshotsStep.java:32)
	at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:38)
	at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:24)
	at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:96)
	at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$0(SkipUpToDateStep.java:89)
	at java.util.Optional.map(Optional.java:215)
	at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:54)
	at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:38)
	at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:77)
	at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:37)
	at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:36)
	at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:26)
	at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:90)
	at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:48)
	at org.gradle.internal.execution.impl.DefaultWorkExecutor.execute(DefaultWorkExecutor.java:33)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:120)
	at org.gradle.api.internal.tasks.execution.ResolveBeforeExecutionStateTaskExecuter.execute(ResolveBeforeExecutionStateTaskExecuter.java:75)
	at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:62)
	at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:108)
	at org.gradle.api.internal.tasks.execution.ResolveBeforeExecutionOutputsTaskExecuter.execute(ResolveBeforeExecutionOutputsTaskExecuter.java:67)
	at org.gradle.api.internal.tasks.execution.ResolveAfterPreviousExecutionStateTaskExecuter.execute(ResolveAfterPreviousExecutionStateTaskExecuter.java:46)
	at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:94)
	at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
	at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:95)
	at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
	at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
	at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:73)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:49)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:102)
	at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:49)
	at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:43)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:134)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:129)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:202)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:193)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:129)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
	at java.lang.Thread.run(Thread.java:748)
                Hi there and congratulations on your first SO question! :) I'm not really an untity specialist, but have you tried following this instruction: library.vuforia.com/content/vuforia-library/en/articles/…?
– tehcpu
                Sep 15, 2019 at 0:46
                Thank you for the link! While I'm not using Vuforia that article is quite helpful. I'm still getting an error, but this is a nice reference :)
– Tyler
                Sep 15, 2019 at 3:22
The dependency of ARCore goes in the gradle file. You request that dependency like this:
dependencies {
    implementation 'com.google.ar:core:1.11.0'
Do you have the ARCore tag in your manifest?
<application>
    <meta-data android:name="com.google.ar.core" android:value="optional" />
</application>
                Thanks for the reply! There are already 2 dependencies references in the gradle file:  dependencies {         classpath 'com.android.tools.build:gradle:3.4.2'      } .... and one with several implementations. Should it go in one of them, or should I use a third?
– Tyler
                Sep 15, 2019 at 2:24
                When I add the ARCore tag to the manifest I get this error: Manifest merger failed : Attribute meta-data#com.google.ar.core.min_apk_version@value value=(190805000) from [com.google.ar:core:1.12.0] AndroidManifest.xml:35:13-38 	is also present at [:arcore_client:] AndroidManifest.xml:43:13-38 value=(180525000). 	Suggestion: add 'tools:replace="android:value"' to <meta-data> element at AndroidManifest.xml:33:9-35:41 to override.
– Tyler
                Sep 15, 2019 at 3:20
                The problem is in your manifest. Are you using multiple libraries? Are you using multiple modules in your app? Are you familiar with manifest mergers? Basically the modules, and libraries in your project also have a manifest file. When you try to build the app the manifest files get combined. You need to carefully look at what is getting merged to fix the manifest problem of the ARCore app. developer.android.com/studio/build/manifest-merge
– Chrystian
                Sep 15, 2019 at 12:02
                Thank you for the link. I only have one module, so I might be using multiple libraries without knowing it. My Merged Manifest tab lists only one Manifest Source and some Other Manifest Files not contributing any elements, then the merging error. I'm stuck now trying to find this other manifest file or library.
– Tyler
                Sep 15, 2019 at 17:43
Was having the same issue! Getting Build failed due to merge conflict. Solved it by following 2 steps:
STEP1:
Copy AndroidManifest.xml file from
{ProjectPath}\Temp\gradleOut\src\main to
{ProjectPath}\Assets\Plugins\Android
STEP2:
Copy below line in application tag with other meta-data tags
<meta-data android:name="com.google.ar.core" android:value="required" tools:replace="android:value" />
STEP3:
Try to build and run it again! Hopefully, it will work.
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