didBecomeActive非暂停游戏 [英] didBecomeActive un-pauses game

问题描述

我正在使用willResignActive通知暂停我的游戏，它似乎暂停了游戏，但是当调用didBecomeActive时，它似乎会自行取消暂停.

I am pausing my game with a willResignActive notification, and it seems to pause the game, but when didBecomeActive is called, it seems to un-pause on its own.

[[NSNotificationCenter defaultCenter]
     addObserver:self
     selector:@selector(applicationWillResign)
     name:UIApplicationWillResignActiveNotification
     object:NULL];

- (void) applicationWillResign {

    self.scene.view.paused = TRUE;
    NSLog(@"About to lose focus");
}

如何使其保持暂停状态?我是否真的需要在AppDelegate中将其暂停?

How do I get it to stay paused? Do I actually need to pause it in my AppDelegate?

推荐答案

这是从后台模式返回后保持视图暂停的一种方法.有点hack，但确实可以.

Here's a way to keep the view paused after returning from background mode. It's a bit of a hack, but it does work.

1)用一个名为stayPaused的布尔值定义一个SKView子类...

1) Define an SKView subclass with a boolean named stayPaused...

    @interface MyView : SKView

    @property BOOL stayPaused;

    @end

    @implementation MyView

    // Override the paused setter to conditionally un-pause the view
    - (void) setPaused:(BOOL)paused
    {
        if (!_stayPaused || paused) {
            // Call the superclass's paused setter
            [super setPaused:paused];
        }
        _stayPaused = NO;
    }

    - (void) setStayPaused
    {
        _stayPaused = YES;
    }

    @end

2)在情节提要中，将视图的类更改为MyView

2) In the storyboard, change the class of the view to MyView

3)在视图控制器中，将视图定义为MyView

3) In the view controller, define the view as MyView

4)添加通知程序以设置stayPaused标志

4) Add a notifier to set the stayPaused flag

    @implementation GameViewController

    - (void)viewDidLoad
    {
        [super viewDidLoad];

        // Define view using the subclass
        MyView * skView = (MyView *)self.view;

        // Add an observer for a method that sets the stay pause flag when notified
        [[NSNotificationCenter defaultCenter] addObserver:skView selector:@selector(setStayPaused)
                                                     name:@"stayPausedNotification" object:nil];

        ...

5)在AppDelegate.m中，发布通知以设置应用程序处于活动状态时的保持暂停"标志

5) In AppDelegate.m, post a notification to set the stay paused flag when the app becomes active

- (void)applicationDidBecomeActive:(UIApplication *)application {
    [[NSNotificationCenter defaultCenter] postNotificationName:@"stayPausedNotification" object:nil];
}

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