ios - 将要在多个 Controller 中显示的 "AFNetworking UIImageView"放在哪里？

Question

我有一个 UIImageView，其中充满了在多个 Controller 之间共享的 AFNetworking。现在我在他们每个人中调用它所以这段代码是重复的:

   _headerView = [UIImageView new];
    NSString *headerPath = [NSString stringWithFormat:@"domain/header.jpg"];
    media.mediaImageURL = [NSURL URLWithString:headerPath];
    [_headerView  setImageWithURL:media.mediaImageURL placeholderImage:[UIImage imageNamed:@"placeholder.png"] ];
    _headerView.frame = CGRectMake(0, 0, self.tableView.frame.size.width, 130);
    _headerView.contentMode = UIViewContentModeScaleAspectFill;
    _headerView.clipsToBounds = YES;
    _headerView.tag = 313;

这种情况下的最佳做法是什么？自定义 View 或 imageView ？

Answer 1

我建议创建一个 UIImageView 类别

+ (instancetype)imageViewWithURL:(NSURL *)url {

     UIImageView *headerView = [UIImageView new];
     [headerView  setImageWithURL:url placeholderImage:[UIImage imageNamed:@"placeholder.png"] ];
     headerView.frame = CGRectMake(0, 0, self.tableView.frame.size.width, 130);
     headerView.contentMode = UIViewContentModeScaleAspectFill;
     headerView.clipsToBounds = YES;
     headerView.tag = 313;

     return headerView;
}

然后在 Controller 中调用它

_headerView = [UIImageView imageViewWithURL:media.mediaImageURL];