Question

我很麻烦，我无法修复与功能有关的错误，无法从游戏中心获取最佳分数。如果您有一个分数，该功能运行良好，但是如果用户没有分数，该功能将崩溃。

有什么建议吗？下面的代码：

func retrieveBestScore() {
        if GKLocalPlayer.localPlayer().isAuthenticated {

            // Initialize the leaderboard for the current local player
            var gkLeaderboard = GKLeaderboard(players: [GKLocalPlayer.localPlayer()])
            gkLeaderboard.identifier = leaderboardID
            gkLeaderboard.timeScope = GKLeaderboardTimeScope.allTime

            // Load the scores
            gkLeaderboard.loadScores(completionHandler: { (scores, error) -> Void in

                // Get current score
                var currentScore: Int64 = 0
                if error == nil {
                    if (scores?.count)! > 0 {
                        currentScore = (scores![0] ).value
                        //We also want to show the best score of the user on the main screen
                        if self.language.contains("it"){
                            self.labelBestScore.text = "Miglior Punteggio: " + String(currentScore)
                            self.bestScore = Int(currentScore)
                        }else{
                            self.labelBestScore.text = "Your Best Score: " + String(currentScore)
                            self.bestScore = Int(currentScore)
                        }
                        print("Punteggio attuale",currentScore)
                    }
                }

            })
        }
    }

谢谢！

Answer 1

根据您的代码，由于强制展开“分数”数组，您可能遇到了此问题。

在关闭时尝试这样的事情：

var currentScore: Int64 = 0
if error == nil, let scores = scores {
    if scores.count > 0 {
        currentScore = scores[0].value
        //We also want to show the best score of the user on the main screen
        if self.language.contains("it"){
            self.labelBestScore.text = "Miglior Punteggio: " + String(currentScore)
            self.bestScore = Int(currentScore)
        }else{
            self.labelBestScore.text = "Your Best Score: " + String(currentScore)
            self.bestScore = Int(currentScore)
        }
        print("Punteggio attuale",currentScore)
    }
}

这是第二种方法，可以使您的代码更加紧凑，我认为这也可以工作，但是很难确定，如果看不到更多代码，则可能需要进行一些小的更改。

guard error == nil, let scores = scores, let currentScore = scores.first?.value else {
    print("GameCenter error or no scores: \(String(describing: error)))")
    return
}

//We also want to show the best score of the user on the main screen
if self.language.contains("it"){
    self.labelBestScore.text = "Miglior Punteggio: " + String(currentScore)
    self.bestScore = Int(currentScore)
}else{
    self.labelBestScore.text = "Your Best Score: " + String(currentScore)
    self.bestScore = Int(currentScore)
}
print("Punteggio attuale",currentScore)

检索最佳成绩游戏中心Swift

1 个答案: