IOS开发——获取本地音频文件(属性/信息)
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];
NSArray *tempArrInfo = [[NSArray alloc] initWithObjects:singer,song,albumName,fileSize,voiceStyle,fileStyle,creatDate,savePath, 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)];
}
}