ios - 我无法关闭 GameCenter 排行榜/ View

Question

GameCenter 可以打开。但是，当按下右上角的“完成”按钮关闭 GameCenter 时，GameCenter 仍然保持打开状态。如何关闭 GameCenter？

下面是我的代码:

- (void) presentLeaderboards
{
    GKGameCenterViewController *leaderboardController = [[GKGameCenterViewController alloc] init];
    if (leaderboardController != nil)
    {
        leaderboardController.viewState = GKGameCenterViewControllerStateLeaderboards;
        UIViewController *vc = self.view.window.rootViewController;
        [vc presentViewController: leaderboardController animated: YES completion:nil];
    }
}

- (void)gameCenterViewControllerDidFinish:(GKGameCenterViewController *)viewController
{
    NSLog(@"Close");
    UIViewController *vc = self.view.window.rootViewController;
    [vc dismissViewControllerAnimated:YES completion:nil];
}

Answer 1

1. 您永远不会为您的 GKGameCenterViewController 设置委托(delegate)，因此永远不会调用您的 gameCenterViewControllerDidFinish: 方法。您应该通过一些调试自己发现这一点。

2. 在 viewController 上调用 dismissViewControllerAnimated。

你的代码应该更像:

- (void) presentLeaderboards
{
    GKGameCenterViewController *leaderboardController = [[GKGameCenterViewController alloc] init];
    if (leaderboardController != nil)
    {
        leaderboardController.gameCenterDelegate = self;
        leaderboardController.viewState = GKGameCenterViewControllerStateLeaderboards;
        UIViewController *vc = self.view.window.rootViewController;
        [vc presentViewController: leaderboardController animated: YES completion:nil];
    }
}

- (void)gameCenterViewControllerDidFinish:(GKGameCenterViewController *)viewController
{
    NSLog(@"Close");
    [viewController dismissViewControllerAnimated:YES completion:nil];
}

添加行:

leaderboardController.gameCenterDelegate = self;

可能会导致新的错误。如果是这样，您需要在 @implementation 行之前将以下内容添加到 .m 中。

@interface MyViewControllerNameHere () <GKGameCenterControllerDelegate>

@end

如果您已经有了类扩展，只需添加 GKGameCenterControllerDelegate 部分。