音頻文件不與iPhone的SDK

Question

我想在我的iPhone app.I播放音頻文件播放已經使用這個代碼

#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]; 

但會運行這個程序我得到這個error.Can請人幫忙我解決這個問題。我不明白爲什麼會出現這個錯誤。

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) 

謝謝您的回答..

Answer 1

這似乎是與AVAudio框架問題只使用了iOS模擬器時。在實際的硬件上測試（在我的情況下，iPad 2 & iPad 1）不會產生這些相同的錯誤

這個錯誤只是來自系統框架的控制檯噪聲，您應該忽略它，它不會影響到您。如果你的應用程序崩潰或未能在其他地方發揮真正的原因。

and please also add CoreFoundation framwork. 

Answer 2

首先，你必須添加AVFoundation框架

對於遵循這個步驟

• 展開目標分支在組&文件項目面板
• 按住Control鍵點按或右鍵單擊AudioPlayer項目
• 選擇添加>現有框架...
• 單擊+按鈕在左下下方鏈接庫
• 選擇AVFoundation.framework，然後單擊添加
• AVFoundation.framework現在將根據鏈接庫上市。 關閉窗口

現在.h文件中包含了這一框架和avaudio玩家創建實例

#import <AVFoundation/AVFoundation.h> 

和接口部分

AVAudioPlayer *audioPlayer; 

現在，在您.m文件，請使用此代碼您想要播放.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

我覺得這是非常有用的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

我覺得這是非常有用的音頻播放：

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];