Copyright (c) 2015 Google Inc. All rights reserved.

The Google Smart Lock for Passwords plugin for Unity® is an open-source project whose goal is to provide a plugin that allows developers to integrate with the Google Smart Lock Credentials API from a game written in Unity®. However, this project is not in any way endorsed or supervised by Unity Technologies.

Unity® is a trademark of Unity Technologies.

The plugin provides support for the Credentials API on Android. For more information see: https://developers.google.com/identity/smartlock-passwords/android/overview.

This plugin only works on Android at this time.

Features:

• easy GUI-oriented project setup (integrated into the Unity GUI)
• no need to override/customize the player Activity
• no need to override/customize AndroidManifest.xml

System requirements:

• Unity® 4.5 or above
• To deploy on Android:
  • Android SDK
  • Android v4.0 or higher
  • Google Play Services library, version 7.0 or above

If you have already integrated your project with a previous version of the plugin and wish to upgrade to a new version, please refer to the upgrade instructions.

To download the plugin, clone this Git repository into your file system (or download it as a ZIP file and unpack it). Then, look for the unitypackage file in the current-build directory:

current-build/GoogleSmartLock-X.YY.ZZ.unitypackage

To install the plugin, simply open your game project in Unity and import that file into your project's assets, as you would any other Unity package. This is accomplished through the Assets | Import Package | Custom Package menu item (you can also reach this menu it by right-clicking the Assets folder). After importing, you should see that a new menu item was added to the Window menu: "Google > SmartLock > Setup...". If you don't see the new menu items, refresh the assets by clicking Assets | Refresh and try again.

Next, load your game project into the Unity editor.

If you do not have a game project to work with, you can use the Credentials sample available in the samples directory. Using that sample will allow you to quickly test your setup and make sure you can access the API.

To configure your Unity game to run with Google Play Services on Android, first open the Android SDK manager and verify that you have downloaded the Google Play Services package. The Android SDK manager is usually available in your SDK installation directory, under the "tools" subdirectory, and is called android (or android.exe on Windows). The Google Play Services package is available under the Extras folder. If it is not installed or is out of date, install or update it before proceeding.

Next, set up the path to your Android SDK installation in Unity. This is located in the preferences menu, under the External Tools section.

Next, configure your game's package name. To do this, click File | Build Settings, select the Android platform and click Player Settings to show Unity's Player Settings window. In that window, look for the Bundle Identifier setting under Other Settings. Enter your package name there (for example com.example.my.awesome.game).

Next, click the Window |Google|SmartLock|Setup... menu item. This will copy the play services library project into the Unity project.

If you are working with the Credentials sample, you should be able to build and run the project at this point. You will see a screen with edit fields and 3 buttons. These buttons exercise the merthods of the API:

• Load - loads the password credentials for this application. The first time there are no save credentials, but the email and profile picture should be pre-populated.
• Save - saves the credentials including any password entered in the password field.
• Delete - deletes the stored password.

**Note: Running in the editor will return sample (empty) values. In order to use this API you must be running the application on an Android device.

To build and run on Android, click File | Build Settings, select the Android platform, then Switch to Platform, then Build and Run.

    using Google.SmartLock;

    SmartLockCredentials.Instance.Load(
                    (status, credential) =>
                    {
                        Debug.Log("Got Status: " + status + ": " + credential);
                        // if the status is success, a real app would use the
                        // credential to sign into the other site.  Here, we
                        // just display them.
                        if (credential != null)
                        {
                            currrentCredential = credential;
                        }
                    });

    using Google.SmartLock;

    // A real app would probably call save after the authentication.
    // Here is just a button for the demo.
    SmartLockCredentials.Instance.Save(currrentCredential,
        (status, credential) =>
        {
            Debug.Log("Got Status: " + status + ": " + credential);
        });

    using Google.SmartLock;

    // Nice to allow the user to delete or "forget me"
    SmartLockCredentials.Instance.Delete(currrentCredential,
        (status, credential) =>
        {
            Debug.Log("Got Status: " + status + ": " + credential);
            // initialize to empty credential.
            currrentCredential = new Credential("", "", "", "", "");
        });