iOS获取本地音频文件(属性/信息)

本文实例为大家分享了iOS获取本地音频文件的具体代码，供大家参考，具体内容如下

获取本地音频文件地址：

NSString *songsDirectory=MUSIC_FILE_ALL;//沙盒地址
  NSBundle *songBundle=[NSBundle bundleWithPath:songsDirectory];
  NSString *bundlePath=[songBundle resourcePath];

  NSArray *arrMp3=[NSBundle pathsForResourcesOfType:@"mp3" inDirectory:bundlePath];
  for (NSString *filePath in arrMp3) {
    [self.wMp3URL addObject:filePath];
  }

解析音频文件属性：

-(void)mDefineUpControl{
  NSString *filePath = [self.wMp3URL objectAtIndex: 0 ];//随便取一个，说明
  //文件管理，取得文件属性 

  NSFileManager *fm = [NSFileManager defaultManager];
  NSDictionary *dictAtt = [fm attributesOfItemAtPath:filePath error:nil]; 

  //取得音频数据   

  NSURL *fileURL=[NSURL fileURLWithPath:filePath];
  AVURLAsset *mp3Asset=[AVURLAsset URLAssetWithURL:fileURL options:nil]; 

  NSString *singer;//歌手
  NSString *song;//歌曲名 

  UIImage *image;//图片  

  NSString *albumName;//专辑名
  NSString *fileSize;//文件大小
  NSString *voiceStyle;//音质类型
  NSString *fileStyle;//文件类型
  NSString *creatDate;//创建日期
  NSString *savePath; //存储路径 

  for (NSString *format in [mp3Asset availableMetadataFormats]) {
    for (AVMetadataItem *metadataItem in [mp3Asset metadataForFormat:format]) {
      if([metadataItem.commonKey isEqualToString:@"title"]){
        song = (NSString *)metadataItem.value;//歌曲名 

      }else if ([metadataItem.commonKey isEqualToString:@"artist"]){
        singer = (NSString *)metadataItem.value;//歌手
      }
      //      专辑名称
      else if ([metadataItem.commonKey isEqualToString:@"albumName"])
      {
        albumName = (NSString *)metadataItem.value;
      }else if ([metadataItem.commonKey isEqualToString:@"artwork"]) {
        NSDictionary *dict=(NSDictionary *)metadataItem.value;
        NSData *data=[dict objectForKey:@"data"];
        image=[UIImage imageWithData:data];//图片
      } 

    }
  }
  savePath = filePath;
  float tempFlo = [[dictAtt objectForKey:@"NSFileSize"] floatValue]/(1024*1024);
  fileSize = [NSString stringWithFormat:@"%.2fMB",[[dictAtt objectForKey:@"NSFileSize"] floatValue]/(1024*1024)];
  NSString *tempStrr = [NSString stringWithFormat:@"%@", [dictAtt objectForKey:@"NSFileCreationDate"]] ;
  creatDate = [tempStrr substringToIndex:19];
  fileStyle = [filePath substringFromIndex:[filePath length]-3];
  if(tempFlo <= 2){
    voiceStyle = @"普通";
  }else if(tempFlo > 2 && tempFlo <= 5){
    voiceStyle = @"良好";
  }else if(tempFlo > 5 && tempFlo < 10){
    voiceStyle = @"标准";
  }else if(tempFlo > 10){
    voiceStyle = @"高清";
  } 

  NSArray *tempArr = [[NSArray alloc] initWithObjects:@"歌手:",@"歌曲名称:",@"专辑名称:",@"文件大小:",@"音质类型:",@"文件格式:",@"创建日期:",@"保存路径:", nil nil];
  NSArray *tempArrInfo = [[NSArray alloc] initWithObjects:singer,song,albumName,fileSize,voiceStyle,fileStyle,creatDate,savePath, nil nil];
  for(int i = 0;i < [tempArr count]; i ++){
    NSString *strTitle = [tempArr objectAtIndex:i];
    UILabel *titleLab = [[UILabel alloc] initWithFrame:CGRectMake(5, 5+i*30, 16*[strTitle length], 25)];
    [titleLab setText:strTitle];
    [titleLab setTextColor:[WASharedFontStyle mGetSharedFontColor]];
    [titleLab setFont:[UIFont systemFontOfSize:16]];
    [self.wInfoSV addSubview:titleLab]; 

    NSString *strInfo = [tempArrInfo objectAtIndex:i];
    UILabel *infoLab = [[UILabel alloc] initWithFrame:CGRectMake(titleLab.frame.origin.x+titleLab.bounds.size.width+5, 5+i*30, self.view.bounds.size.width-(titleLab.frame.origin.x+titleLab.bounds.size.width+5)-5, 25)];
    [infoLab setText:strInfo];
    [infoLab setTextColor:[WASharedFontStyle mGetSharedFontColor]];
    [infoLab setFont:[UIFont systemFontOfSize:16]];
    [self.wInfoSV addSubview:infoLab]; 

    if(i == [tempArr count]-1){
      [infoLab setFrame:CGRectMake(titleLab.frame.origin.x+titleLab.bounds.size.width+5, 5+i*30, self.view.bounds.size.width-(titleLab.frame.origin.x+titleLab.bounds.size.width+5)-5, 30*4)];
      [infoLab setLineBreakMode:NSLineBreakByWordWrapping];
      [infoLab setFont:[UIFont systemFontOfSize:12]];
      [infoLab setNumberOfLines:0];
    } 

    [self.wInfoSV setContentSize:CGSizeMake(self.view.bounds.size.width, i*45)]; 

  } 

} 

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