五句代码搞定图片浏览功能 解决之前当图片长度不一时会出现手势错乱的现象
ShowImageView *showView = [[ShowImageView alloc]init];

[weakSelf.collectionView addSubview:showView];

showView.isProgerss = YES;
showView.isTally = YES;
showView.imageUrlArr = data.imgList;