 
 public class PhotoBrowserCell: UICollectionViewCell {
     // MARK: - 属性
-
+    
     /// 代理
     weak var photoBrowserCellDelegate: PhotoBrowserCellDelegate?
     

            doLayout()
            return
        }
        
        weak var weakSelf = self
        imageView.kf.setImage(with: url, placeholder: image, options: nil, progressBlock: { (receivedSize, totalSize) in
            if totalSize > 0 {
                weakSelf?.progressView.isHidden = false
                weakSelf?.progressView.progress = CGFloat(receivedSize) / CGFloat(totalSize)
            }
        }, completionHandler: { (image, error, cacheType, url) in

        let size = fitSize
        let needResetSize = imageView.bounds.size.width < size.width
            || imageView.bounds.size.height < size.height
        UIView.animate(withDuration: 0.25) {
            self.imageView.center = self.centerOfContentSize
            if needResetSize {
                self.imageView.bounds.size = size
