Block a user

OpenIMClient.getInstance().friendshipManager.addBlacklist(
    new OnBase<String>() {
        @Override
        public void onSuccess(String data) {
            // User blocked successfully.
        }

        @Override
        public void onError(int code, String error) {
            // Handle the error.
        }
    },
    targetUserID,
    "{\"source\":\"profile-menu\"}"
);

The second argument is the target userID, and the third argument is optional extension data. Use the overload without ex when no extension data is needed. A successful callback means the block request completed, not that the event has arrived.

The blacklist is one-way: the blocked user cannot send messages to the current account. Whether the current account can continue to send messages is an application-level rule. ex stores blacklist extension data and can contain a JSON string.

Receive onBlacklistAdded through OnFriendshipListener:

@Override
public void onBlacklistAdded(BlacklistInfo user) {
    // Handle the added blacklist record.
}