ios - 使用 swift 从 Game Center 检索用户最高分

Question

我需要从 Game Center 检索玩家提交的最高分数。我想我在 objective-c 中找到了答案，但我不知道如何快速编写它，因为我对此还很陌生。有人可以帮我将以下代码翻译成 swift 吗？提前谢谢你。

GKLeaderboard *leaderboardRequest = [[GKLeaderboard alloc] init];
    if (leaderboardRequest != nil) {
        [leaderboardRequest loadScoresWithCompletionHandler:^(NSArray *scores, NSError *error){
            if (error != nil) {
                //Handle error
            }
            else{
                [delegate onLocalPlayerScoreReceived:leaderboardRequest.localPlayerScore];
            }
        }];
    }

Answer 1

这是对 Swift 的直接翻译:

let leaderboardRequest = GKLeaderboard() as GKLeaderboard!
if leaderboardRequest != nil
{
    leaderboardRequest.loadScoresWithCompletionHandler({ (scores:[AnyObject]!, error:NSError!) -> Void in
        if error != nil
        {
            //handle error
        }
        else
        {
            delegate.onLocalPlayerScoreReceived(leaderboardRequest.localPlayerScore)
        }
    })
}