我应该使用什么来代替 iOS7 中已弃用的 GKLeaderboardViewController？

我为 IOS 7 更新了我的应用程序，游戏中心有一些已弃用的内容，例如加载和关闭排行榜和成就，我该如何修复它们，它说 GKLeaderboardViewController 已弃用

- (IBAction)LeaderBoardsButton:(id)sender {
GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init];
if (leaderboardController != NULL)
{
    leaderboardController.leaderboardDelegate = self;
    [self presentViewController:leaderboardController animated:YES completion:NULL];
}
{
    AudioServicesPlaySystemSound(SoundID);
}
}

- (void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController
{
[self dismissViewControllerAnimated:YES completion:NULL];
{
    AudioServicesPlaySystemSound(SoundID2);
}
}

- (IBAction)AchievementsButton:(id)sender {
GKAchievementViewController *achievements = [[GKAchievementViewController
                                              alloc] init];
if (achievements != nil)
{
    achievements.achievementDelegate = self;
    [self presentViewController:achievements animated:YES completion:NULL];
}
{
    AudioServicesPlaySystemSound(SoundID);
}
}

- (void)achievementViewControllerDidFinish:(GKAchievementViewController
                                        *)viewController
{
[self dismissViewControllerAnimated:YES completion:NULL];
{
    AudioServicesPlaySystemSound(SoundID2);
}
}

我这样报告分数

- (IBAction)ShareScore:(id)sender {
[self.gameCenterManager reportScore: counter forCategory: self.currentLeaderBoard];

GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init];
if (leaderboardController != NULL)
{
    leaderboardController.category = self.currentLeaderBoard;
    leaderboardController.timeScope = GKLeaderboardTimeScopeToday;
    leaderboardController.leaderboardDelegate = self;
    [self presentViewController:leaderboardController animated:YES completion:NULL];
}
{
    AudioServicesPlaySystemSound(SoundID);
}
}

iOS 7 将排行榜、成就等控制器合并到一起GKGameCenterViewController班级。您使用viewState参数来控制要显示的视图。

您需要执行以下操作来显示/关闭排行榜：

- (void) presentLeaderboards {
    GKGameCenterViewController* gameCenterController = [[GKGameCenterViewController alloc] init];
    gameCenterController.viewState = GKGameCenterViewControllerStateLeaderboards;
    gameCenterController.gameCenterDelegate = self;
    [self presentViewController:gameCenterController animated:YES completion:nil];
}

- (void) gameCenterViewControllerDidFinish:(GKGameCenterViewController*) gameCenterViewController {
    [self dismissViewControllerAnimated:YES completion:nil];
}

同样，为了展示成就，您可以这样做：

- (void) presentAchievements {
    GKGameCenterViewController* gameCenterController = [[GKGameCenterViewController alloc] init];
    gameCenterController.viewState = GKGameCenterViewControllerStateAchievements;
    gameCenterController.gameCenterDelegate = self;
    [self presentViewController:gameCenterController animated:YES completion:nil];
}

报告分数看起来像这样：

- (void) reportHighScore:(NSInteger) highScore forLeaderboardId:(NSString*) leaderboardId {
    if ([GKLocalPlayer localPlayer].isAuthenticated) {
        GKScore* score = [[GKScore alloc] initWithLeaderboardIdentifier:leaderboardId];
        score.value = highScore;
        [GKScore reportScores:@[score] withCompletionHandler:^(NSError *error) {
            if (error) {
                NSLog(@"error: %@", error);
            }
        }];
    }
}