我一直在使用AVAudioPlayer播放声音。由于我想在播放后立即释放这些声音,我添加了一个代表。这会导致“_NSAutoreleaseNoPool():类NSCFString的对象0x55e060自动释放,没有池到位 - 只是在声音完成播放后立即泄漏”错误,但在调用-audioPlayerDidFinishPlaying之前。
以下是一些消息来源:
@interface MyAVAudioPlayer : NSObject <AVAudioPlayerDelegate> {
AVAudioPlayer *player;
float savedVolume;
BOOL releaseWhenDone;
}
主要类.m:
- (MyAVAudioPlayer *) initPlayerWithName: (NSString *) name;
{
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource: name ofType: @"caf"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];
player = [[AVAudioPlayer alloc] initWithContentsOfURL: fileURL error: nil];
[fileURL release];
[player prepareToPlay];
return (self);
}
- (MyAVAudioPlayer *)getAndPlayAndRelease:(NSString *)name withVolume:(float) vol;
{
MyAVAudioPlayer *newMyAVPlayer = [self initPlayerWithName:name];
player.volume = vol;
[player play];
releaseWhenDone = YES;
[player setDelegate: self];
return newMyAVPlayer;
}
+ (void) getAndPlayAndReleaseAuto:(NSString *)name withVolume:(float) vol;
{
MyAVAudioPlayer *newMyAVPlayer = [[MyAVAudioPlayer alloc] getAndPlayAndRelease:name withVolume:vol];
// [newMyAVPlayer autorelease];
}
#pragma mark -
#pragma mark AVAudioPlayer Delegate Methods
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)playedPlayer successfully:(BOOL)flag {
if (releaseWhenDone) {
NSLog(@"releasing");
[playedPlayer release];
// [self release];
NSLog(@"released");
}
}
- (void)audioPlayerDecodeErrorDidOccur:(AVAudioPlayer *)player error:(NSError *)error {
NSLog(@"Error while decoding: %@", [error localizedDescription] );
}
- (void)audioPlayerBeginInterruption:(AVAudioPlayer *)player {
NSLog(@"Interrupted!");
}
- (void)audioPlayerEndInterruption:(AVAudioPlayer *)player {
NSLog(@"EndInterruption!");
}
- (BOOL) play;
{
player.currentTime = 0.0;
return [player play];
}
评论[player setDelegate:self];使错误消失,但我的audioPlayerDidFinishPlaying不会被调用。
有什么想法?我突然在另一个线程中运行了吗?
答案 0 :(得分:0)
我发现了问题。我的错,当然。
在我的很多类文件中,我添加了:
-(BOOL) respondsToSelector:(SEL) aSelector
{
NSLog(@"Class: %@ subclass of %@, Selector: %@", [self class], [super class], NSStringFromSelector(aSelector));
return [super respondsToSelector:aSelector];
}
主要是出于好奇。
好吧,当我在声音中添加一个委托时,会在委托之前调用此方法,并且从AVAudioPlayer碰巧进入的任何runloop调用它,并且可能是没有自动释放池的runloop。