- (CGFloat)folderSizeAtPath:(NSString *) folderPath

{

    NSFileManager * manager = [NSFileManager defaultManager];

    

    if (![manager fileExistsAtPath:folderPath])

    {

      return 0;

    }

    

    NSEnumerator * childFilesEnumerator = [[manager subpathsAtPath:folderPath] objectEnumerator];

    NSString * fileName;



    long long folderSize = 0;

    

    while ((fileName = [childFilesEnumerator nextObject]) != nil)

    {

        

        NSString * fileAbsolutePath = [folderPath stringByAppendingPathComponent:fileName];

        

        float singleFileSize = 0.0;

        if ([manager fileExistsAtPath:fileAbsolutePath])

        {

            singleFileSize = [[manager attributesOfItemAtPath:fileAbsolutePath error:nil] fileSize];

            NSLog(@"singleFileSize %f",singleFileSize);

        }

        folderSize += singleFileSize;

    

    }

    NSLog(@"count file size %f",folderSize/1000.0);

    return folderSize/1000.0;

}

调用 ：

NSString * filePath = [[[NSBundle mainBundle] bundlePath] stringByAppendingPathComponent:[NSString stringWithFormat:@"/%@",@"TencentOpenApi_IOS_Bundle.bundle"]];

    

    [self folderSizeAtPath:filePath];