问题描述
我正在尝试同时为AVAudioPlayer播放几个声音文件.我在 AVAudioPlayer帮助中阅读了一个说明如何执行该操作的线程:同时播放多种声音,一次停止所有声音,然后解决自动参考计数问题.当我尝试一次只播放一个文件(self.options.on为ON)时,这似乎是一个奇怪的问题,但是当我尝试创建多个实例(else语句)却不播放它们时,这似乎是一个奇怪的问题.播放.我检查了输出文件URL是否正确,这是什么,所以它不起作用的原因是什么?
I am trying to play a couple of sounds files at the same time for the AVAudioPlayer. I read a thread explaining how to do it @ AVAudioPlayer Help: Playing multiple sounds simultaneously, stopping them all at once, and working around Automatic Reference Counting . It seems to be a weird issue as I when i try to only play one file at a time (when self.options.on is ON), it works, but when I try creating multiple instances (the else statements) and play them nothing plays. I checked to see if the outputfile URL is correct and it is, so what is the reason that it isn't working?
谢谢!
- (void)playTapped:(id)sender
{
if (!recorder.recording)
{
if(self.options.on)
{
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
[NSString stringWithFormat:@"sound%i.m4a",last],
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:outputFileURL error:nil];
NSLog(@"%@",player.url);
[player setDelegate:self];
[player play];
}
else
{
// trying to play all sounds at once
for (NSString *str in self.soundsCreated){
NSLog(@"%@",str);
NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
[NSString stringWithFormat:@"sound%@.m4a",str],
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:outputFileURL error:nil];
NSLog(@"%@",audioPlayer.url);
[audioPlayer prepareToPlay];
[audioPlayer setDelegate:self];
[audioPlayer play];
}
}
}
}
注意 我尝试使用NSError
检查进行初始化,但未收到任何错误:
NOTEI tried initializing with NSError
check but i'm not getting any errors:
NSError *sessionError = nil;
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:outputFileURL error:&sessionError];
if (sessionError)
{
NSLog(@"Error in audioPlayer: %@",[sessionError localizedDescription]);
}
解决方案我的NSMutableArray
s初始化似乎是个问题.
SOLUTIONIt seemed to be an issue with the initialization of my NSMutableArray
s.
我从以下位置将它们更改了
I changed them from:
self.soundsCreated = [[NSMutableArray alloc]init];
self.playerArray = [[NSMutableArray alloc]init];
到
self.soundsCreated = [NSMutableArray new];
self.playerArray = [NSMutableArray new];
并修复了该问题
推荐答案
而不是将错误传递为nil,请尝试并检查初始化是否正确.
Instead of passing error as nil try this and check if initialization is working correct.
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
if (error)
{
DebugLog(@"Error in audioPlayer: %@",[error localizedDescription]);
}
这篇关于AVAudioPlayer无法同时播放声音的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!