0. Prerequisites

 Before we start the ARCore CloudAnchors, under processes will be done:

1. Download JDK to use keytool
2. Register Google Cloud Platform
3. Download arcore-unity-extensions package from the google-ar official github.

1. Start with a new Project.

- Environments

Create a new Project Templated by AR (Core).

• Unity Hub Version: 3.2.0
• Editor Version: 2021.3.6f1 (LTS)

- Import package

1. Importing the package that was downloaded from 0. Prerequisites
   • Windows > Package Manager > + Add package from disk... > package.json
2. Import a sample Persistent Cloud Anchor Sample

- Project Settings

* Player

• Other Settings > Set the Target API Level to API Level 32
• Set the Package Name to what you want.

 Publishing Settings > Keystore Manager... > Create New

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* XR Plug-in Management

 Plug-in Providers > Check ARCore

 ARCore Extensions / Android Authentication Strategy > Change Keyless (Recommanded)
Optional Features > Check Cloud Anchors

2. Create GCP API Key

- Create a new GCP Project

- Enable ARCore Cloud Anchor API

Click the button to use ARCore Cloud Anchor API.

- Create API Key

Create a new API Key.

And set the API Restriction to ARCore Cloud Anchor API, then Save.

3. Link with GCP OAuth Client ID

- Find SHA-1 Fingerprint from keystore

cd <Java/JDK/bin/>
.\keytool.exe -list -v -keystore <your keystore path>
Enter keystore password: <your password>

 Backup SHA-1 Certificate fingerprint.

- Create new OAuth Client ID

Create OAuth Client ID

• Package name in Project Settings
• SHA-1 Certificate fingerprint in keystore

And then Save.

3. Build Project

- Open Sample Scene

PersistentCloudAnchors.unity Scene in Assets/Samples

- Build Settings

• Add Open Scenes
• Switch platform to Android
• Build And Run

4. Run

- References

[Link] https://developers.google.com/ar/develop/unity-arf/cloud-anchors/developer-guide-android
[Link] https://www.oracle.com/java/technologies/downloads/
[Link] https://github.com/google-ar/arcore-unity-extensions