iOS 使用AFN上传视频到服务器示例代码

清除documents中视频

-(void)ClearMovieFromDoucments{
  NSFileManager *fileManager = [NSFileManager defaultManager];
  NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
  NSString *documentsDirectory = [paths objectAtIndex:0];
  NSArray *contents = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:NULL];
  NSEnumerator *e = [contents objectEnumerator];
  NSString *filename;
  while ((filename = [e nextObject])) {
    MyLog(@"%@",filename);
    if ([filename isEqualToString:@"tmp.PNG"]) {
      MyLog(@"删除%@",filename);
      [fileManager removeItemAtPath:[documentsDirectory stringByAppendingPathComponent:filename] error:NULL];
      continue;
    }
    if ([[[filename pathExtension] lowercaseString] isEqualToString:@"mp4"]||
      [[[filename pathExtension] lowercaseString] isEqualToString:@"mov"]||
      [[[filename pathExtension] lowercaseString] isEqualToString:@"png"]) {
      MyLog(@"删除%@",filename);
      [fileManager removeItemAtPath:[documentsDirectory stringByAppendingPathComponent:filename] error:NULL];
    }
  }
}