Objective c 从m4a或wav解析标题？

如何在iOS（objective-c）上轻松解析wav或m4a文件中的标题

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感谢您提供的解决方案。

您尝试过正则表达式吗？同样的问题，你试过什么？我只试过这种方法，但它只适用于mp3.CFDictionaryRef piDict=nil；UInt32 piDataSize=sizeof（piDict）；err=AudioFileGetProperty（fileID、kaudiofilepropertyinfo字典、piDataSize和piDict）；如果（err！=noErr）{NSLog（@“AudioFileGetProperty属性信息字典失败”）；}NSDictionary*nsDict=（uu桥NSDictionary*）piDict；NSString*title=[nsDict objectForKey:[NSString stringWithUTF8String:kAFInfoDictionary_title]]；你试过正则表达式吗？同样的问题，你试过什么？我只试过这种方法，但它只适用于mp3.CFDictionaryRef piDict=nil；UInt32 piDataSize=sizeof（piDict）；err=AudioFileGetProperty（fileID、kaudiofilepropertyinfo字典、piDataSize和piDict）；如果（err！=noErr）{NSLog（@“AudioFileGetProperty属性信息字典失败”）；}NSDictionary*nsDict=（uu桥NSDictionary*）piDict；NSString*title=[nsDict objectForKey:[NSString stringWithUTF8String:kAFInfoDictionary_title]]；

NSBundle* bundle = [NSBundle mainBundle];
NSString* path = [bundle bundlePath];
NSURL * fileURL=[NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/silence.mp3", path]];
AudioFileTypeID fileTypeHint = kAudioFileMP3Type;
NSString *fileExtension = [[fileURL path] pathExtension];
if ([fileExtension isEqual:@"mp3"]||[fileExtension isEqual:@"m4a"])
{
    AudioFileID fileID  = nil;
    OSStatus err        = noErr;

    NSDictionary *piDict = nil;
    UInt32 piDataSize   = sizeof( piDict );
    err = AudioFileGetProperty( fileID, kAudioFilePropertyInfoDictionary, &piDataSize, &piDict );
    if( err != noErr ) {
        [piDict release];
        NSLog( @"AudioFileGetProperty failed for property info dictionary" );
    }

    NSString * Album = [piDict objectForKey: 
                        [NSString stringWithUTF8String: kAFInfoDictionary_Album]];
    NSString * Artist = [piDict objectForKey: 
                         [NSString stringWithUTF8String: kAFInfoDictionary_Artist]];
    NSString * Title = [piDict objectForKey: 
                        [NSString stringWithUTF8String: kAFInfoDictionary_Title]];
    NSLog(@"%@",Title);
    NSLog(@"%@",Artist);
    NSLog(@"%@",Album);

}