如何录制同时播放AVPlayer和WAV文件的歌曲? [英] how can i record a song which is playing with AVPlayer and an wav file at a same time?

问题描述

我正在开发一个应用程序，其中我必须同时录制一首歌曲和一个wav文件.我正在播放iPod音乐库中的歌曲，并在视图控制器上放置了一个按钮， WAV文件开始，但是当我开始使用AVAudioRecorder录制时，WAV文件停止工作. 这是我的ipod音乐库的代码:-

I'm developing an App in which i have to record a song and a wav file at a same time.I'm playing song from iPod Music libraries and on a view controller i have placed a button on click of which an wav file starts but when i start recording using AVAudioRecorder,my wav file stop working. This is my ipod music library's code:-

- (void) mediaPicker: (MPMediaPickerController *) mediaPicker didPickMediaItems: (MPMediaItemCollection *) collection 

{
MPMediaItem *item = [[collection items] objectAtIndex:0];
NSURL *url = [item valueForProperty:MPMediaItemPropertyAssetURL];

[self dismissModalViewControllerAnimated: YES];


// Play the item using AVPlayer


AVPlayerItem *playerItem = [[AVPlayerItem alloc] initWithURL:url];
player = [[AVPlayer alloc] initWithPlayerItem:playerItem];
[player play];  
}

这是我播放wav文件的代码:-

and this is my code by which i m playing wav file:-

-(void)playAudio:(NSString *)path
{
SystemSoundID soundIDWav;
NSString *sound = [NSString stringWithFormat:@"%@%@",[[NSBundle mainBundle] resourcePath], @"/wavFile.wav"];
NSURL *filePath = [NSURL fileURLWithPath:path isDirectory:NO];
AudioServicesCreateSystemSoundID((__bridge CFURLRef)filePath, &soundIDWav);
AudioServicesPlaySystemSound(soundIDWav);
}

我正在通过AVAudioRecorder录制这两个... 请帮忙.谢谢...

I'm recording these two by AVAudioRecorder... Please help.Thanks in advance...

推荐答案

创建音频会话

audioSession.delegate = self;
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[audioSession setActive:YES error:nil];

现在在AVAudioPlayer中播放文件，并同时开始使用AVAudioRecorder录音

Now play your file in AVAudioPlayer and at same time start recording using AVAudioRecorder

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