音频文件不与iPhone的SDK

Question

我想在我的iPhone app.I播放音频文件播放已经使用这个代码

#import <AVFoundation/AVFoundation.h> 

NSBundle *bundle = [NSBundle mainBundle]; 
    NSString *musicPath = [bundle pathForResource:@"audioSample" ofType:@"mp3"]; 
    NSURL *musicURL = [NSURL fileURLWithPath:musicPath]; 
    NSError *error= [NSError errorWithDomain:@"Domain" code:0 userInfo:nil]; 

    AVAudioPlayer *aplayer= [[AVAudioPlayer alloc] initWithContentsOfURL:musicURL error:&error]; 
    aplayer.delegate = self; 
    [aplayer play]; 

但会运行这个程序我得到这个error.Can请人帮忙我解决这个问题。我不明白为什么会出现这个错误。

System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn: dlopen(/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn, 262): Symbol not found: ___CFObjCIsCollectable 
    Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security 
    Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation 
in /System/Library/Frameworks/Security.framework/Versions/A/Security 
2012-08-03 10:12:07.330 SampleAudioCode[591:12003] Error loading /Library/Audio/Plug-Ins/HAL/Digidesign CoreAudio.plugin/Contents/MacOS/Digidesign CoreAudio: dlopen(/Library/Audio/Plug-Ins/HAL/Digidesign CoreAudio.plugin/Contents/MacOS/Digidesign CoreAudio, 262): Symbol not found: ___CFObjCIsCollectable 
    Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security 
    Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation 
in /System/Library/Frameworks/Security.framework/Versions/A/Security 
2012-08-03 10:12:07.330 SampleAudioCode[591:12003] Cannot find function pointer NewDigiCoreAudioPlugIn for factory B8A063B5-2F3D-444A-88CB-D0B8F1B22042 in CFBundle/CFPlugIn 0xdc50f50 </Library/Audio/Plug-Ins/HAL/Digidesign CoreAudio.plugin> (bundle, not loaded) 

谢谢您的回答..

Answer 1

这似乎是与AVAudio框架问题只使用了iOS模拟器时。在实际的硬件上测试（在我的情况下，iPad 2 & iPad 1）不会产生这些相同的错误

这个错误只是来自系统框架的控制台噪声，您应该忽略它，它不会影响到您。如果你的应用程序崩溃或未能在其他地方发挥真正的原因。

and please also add CoreFoundation framwork. 

Answer 2

首先，你必须添加AVFoundation框架

对于遵循这个步骤

• 展开目标分支在组&文件项目面板
• 按住Control键点按或右键单击AudioPlayer项目
• 选择添加>现有框架...
• 单击+按钮在左下下方链接库
• 选择AVFoundation.framework，然后单击添加
• AVFoundation.framework现在将根据链接库上市。 关闭窗口

现在.h文件中包含了这一框架和avaudio玩家创建实例

#import <AVFoundation/AVFoundation.h> 

和接口部分

AVAudioPlayer *audioPlayer; 

现在，在您.m文件，请使用此代码您想要播放.mp3文件的位置。

NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/audiofile.mp3", [[NSBundle mainBundle] resourcePath]]]; 

NSError *error; 
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error]; 
audioPlayer.numberOfLoops = -1; 

if (audioPlayer == nil) 
    NSLog([error description]);    
else 
    [audioPlayer play]; 

Answer 3

我觉得这是非常有用的AudioPlayer ...

-(void)play 
{ 
    [audioPlayer stop]; 

    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"%@",[soundArry objectAtIndex:pageNo.currentPage]] ofType:@"mp3"]]; 

    audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil]; 
    [audioPlayer play]; 


} 

soundArry是我SoundArray。 pageNo是My PageControl。

Answer 4

我觉得这是非常有用的音频播放：

NSString *filePath=[[NSBundle mainBundle] pathForResource:@"audiofile" ofType:@"mp3"]; 

NSURL *url = [NSURL fileURLWithPath:filePath]; 
NSError *error; 
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error]; 
audioPlayer.numberOfLoops = -1; 
if (audioPlayer == nil) 
     NSLog([error description]);    
else 
    [audioPlayer play];