如何获取AVURLAsset的文件名?

时间:2013-10-04 00:29:09

标签: objective-c avfoundation nsurl avasset avurlasset

我获取了AVURLAsset的URL,如下所示:

NSURL *url = [[asset defaultRepresentation] url];

在控制台中,AVURLAsset的网址如下所示:

  

资产库://asset/asset.mov ID = A3210417-4BAC-1C78-BD93-4BDD286247D9&安培; EXT = MOV

我尝试从URL获取带扩展名的文件名,如下所示:

NSString *last = [[url URLByDeletingPathExtension] lastPathComponent];
NSString *tnFileName = [NSString stringWithFormat:@"%@_tn.%@", last, url.pathExtension];

这是tnFileName的控制台日志:

  

tnFileName = asset_tn.mov

如何获得A3210417-4BAC-1C78-BD93-4BDD286247D9部分的字符串?或者资产是否有不同的唯一ID用于缓存资产的静态图像?

为了澄清,我需要将缩略图存储到磁盘,并且我想使用与资产匹配的名称。

2 个答案:

答案 0 :(得分:3)

使用这样的字符串:

NSString * urlName = @"assets-library://asset/asset.mov?id=A3210417-4BAC-1C78-BD93-

4BDD286247D9&ext=mov";

    NSArray *arr = [urlName componentsSeparatedByString:@"id"];

    NSString *str = [arr lastObject];

    NSArray *arr1 = [str componentsSeparatedByString:@"&"];

    NSLog(@"array is %@",arr1);

    NSString *str2 = [[arr1 objectAtIndex:0] substringFromIndex:1];

    NSLog(@"str2 is %@",str2);

输出将是A3210417-4BAC-1C78-BD93-4BDD286247D9:)

答案 1 :(得分:0)

试试这样:

NSString * urlName = @“assets-library://asset/asset.mov?id = A3210417-4BAC-1C78-BD93-

4BDD286247D9&安培; EXT = MOV“;

NSArray *arr = [urlName componentsSeparatedByString:@"id"];

NSString *str = [arr lastObject];

NSArray *arr1 = [str componentsSeparatedByString:@"&"];

NSLog(@"array is %@",arr1);

NSString *str2 = [[arr1 objectAtIndex:0] substringFromIndex:1];

NSLog(@"str2 is %@",str2);