雪碧套件和放大器;播放声音会导致应用程序终止

问题描述

只是我碰到入─问题
我有一个SKScene中，我使用播放声音FX SKAction类方法

Just a problem I've run into-I have an SKScene in which I play a sound fx using SKAction class method

[SKAction playSoundFileNamed:@"sound.wav" waitForCompletion:NO];

现在，当我尝试去的背景下，无论是声音结束，显然iOS版终止我的应用程序因 gpus_ReturnNotPermittedKillClient 。

Now when I try to go to background, no matter that the sound was over, apparently iOS is terminating my app due to gpus_ReturnNotPermittedKillClient.

现在，只有当我评论这条线，而不是运行iOS的行动在后台运行它的伟大（当然，停顿了一下，但没有终止）。

Now only when I comment this line and not running the action iOS runs it great in background (of course, paused, but without termination).

我在做什么错了？

修改：iOS版不会终止应用程序，如果该行不计算─也就是说，如果是在一个 if语句的WASN 'T运行（soundOn == YES）或类似的东西，当布尔是假

EDIT: iOS will not terminate the app if the line wasn't run- say, if it was in an if statement that wasn't run (soundOn == YES) or something like that, when the bool is false

推荐答案

问题是 AVAudioSession 而应用程序进入背景不能活动。这不是显而易见的，因为雪碧套件并没有提及它使用AVAudioSession内部。

The problem is AVAudioSession can't be active while the app enters background. This isn't immediately obvious because Sprite Kit makes no mention that it uses AVAudioSession internally.

解决方法是相当简单，而且也适用于ObjectAL =>设置 AVAudioSession 为无效，而应用程序是在后台，当程序进入激活音频会话前景。

The fix is quite simple, and also applies to ObjectAL => set the AVAudioSession to inactive while the app is in background, and reactivate the audio session when the app enters foreground.

此修复程序简化的AppDelegate看起来像这样：

A simplified AppDelegate with this fix looks like so:

#import <AVFoundation/AVFoundation.h>
...

- (void)applicationWillResignActive:(UIApplication *)application
{
    // prevent audio crash
    [[AVAudioSession sharedInstance] setActive:NO error:nil];
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    // prevent audio crash
    [[AVAudioSession sharedInstance] setActive:NO error:nil];
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // resume audio
    [[AVAudioSession sharedInstance] setActive:YES error:nil];
}

PS：此修复程序将包含在 v7.0.3

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