Friends in Unity games

Play Games Friends allows players to create and maintain a cross-games friends list. You can request access to this friends list to help your players play your game with their friends. See the Friends concept page for more details on the friends system.

Before you start

• Set up your project and the Google Play Games plugin for Unity. For details, see the Get started guide.

• See the best practices guidelines for instructions on the best way to implement these APIs.

See the best practices guidelines for instructions on the best way to implement these APIs.

Enable friends

To enable friends, use the following functions:

• View friends: Request access to a player’s friends list, so you can add their play games friends to your in-game friends list.

• View a player profile: Let a player view the Play Games profile of another player. This is essential so a player knows who their friends are, and can connect to other Play Games players in your game. This will need to be tied to a UI element to trigger the popup. See the friends guidelines for details.

View friends

There are two ways to load friends, either using the ISocial framework or directly with PlayGamesPlatform.

Load friends with the ISocial framework

Social.localUser.LoadFriends((success) =>  {
    Debug.Log("Friends loaded OK: " + ok));
    foreach(IUserProfile p in Social.localUser.friends) {
         Debug.Log(p.userName + " is a friend");
    }

However, this call will fail if the current player has not yet granted permission to the game to access this information. Use GetLastLoadFriendsStatus to check if LoadFriends failed due to missing consent.

 PlayGamesPlatform.Instance.GetLastLoadFriendsStatus((status) => {
    // Check for consent
    if (status == LoadFriendsStatus.ResolutionRequired) {
        // Ask for resolution.
    }
});

A game can ask the current player to share the friends list by calling AskForLoadFriendsResolution.

PlayGamesPlatform.Instance.AskForLoadFriendsResolution((result) => {
    if (result == UIStatus.Valid) {
        // User agreed to share friends with the game. Reload friends.
    } else {
        // User doesn’t agree to share the friends list.
    }
});

This function will show the appropriate platform-specific friends sharing UI. This UI asks the player if they want to share their friends with the game.

Load friends with PlayGamesPlatform

Another way of loading friends is to use LoadFriends and LoadMoreFriends:

PlayGamesPlatform.Instance.LoadFriends(pageSize, forceReload, (status) => {
    // Check if the call is successful and if there are more friends to load.
});

PlayGamesPlatform.Instance.LoadMoreFriends(pageSize, (status) => {
    // Check if there are more friends to load.
});

The pageSize param represents the number of entries to request for this page. Note that if cached data already exists, the returned buffer may contain more than this size. The buffer is guaranteed to contain at least this many entries if the collection contains enough records. If forceReload is set to true, this call will clear any locally-cached data and attempt to fetch the latest data from the server. This would commonly be used for actions like a user- initiated refresh. Normally, this should be set to false to gain the advantages of data caching.

If the callback returns LoadFriendsStatus.LoadMore, then there are more friends to load. LoadFriendsStatus.ResolutionRequired signals that the user has not shared the friends list and you can directly call PlayGamesPlatform.Instance.AskForLoadFriendsResolution.

Determine friends list visibility

Use PlayGamesPlatform.Instance.GetFriendsListVisibility to check if the user has shared the friends list with the game. Possible return statuses are:

• FriendsListVisibilityStatus.RequestRequired indicates you must ask for consent.

• FriendsListVisibilityStatus.Visible indicates that loading the friends list should succeed.

• FriendsListVisibilityStatus.Unknown generally shouldn't happen. You can set forceReload to true to refresh the data.

PlayGamesPlatform.Instance.GetFriendsListVisibility(forceReload, (friendsListVisibilityStatus) => {});

View a player profile

To add or remove a player as a friend, use the show and compare profile function. This function triggers a bottom sheet dialog showing the Play Games profile of the user; call the function with the player Id of the requested player. If the player and friend have in-game nicknames, use them in the call to add more context to the profile UI:

PlayGamesPlatform.Instance.ShowCompareProfileWithAlternativeNameHintsUI(
    mFirstFriendId, /* otherPlayerInGameName= */ null, /* currentPlayerInGameName= */ null,
    (result) => {
        // Profile comparison view has closed.
});