1.创建一个装高度的数组并初始化
@property(nonatomic,strong)NSMutableArray*imagesHeightArray;
2.在获取数据的时候，给数组添加赋值0
[self.imagesHeightArray addObject:@(0)];
3.在cell里面，取图片的时候，取每一张图片的尺寸，并使用block传值，把高度传给数组
定义block：
@property (nonatomic, copy) void(^ImgDetailTCblock)(ImgDetailTC*cell,CGFloat height);
@property (nonatomic, strong) NSIndexPath* indexPath;
传值：
[self.imgimageView sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@", goods.detail]]
completed:^(UIImage * _Nullable image, NSError * _Nullable error, SDImageCacheType cacheType, NSURL * _Nullable imageURL) {
// NSLog(@"宽：%f, 高：%f", image.size.width, image.size.height);
CGFloat imgHeight=image.size.height * [UIScreen mainScreen].bounds.size.width / image.size.width;
self.ImgDetailTCblock(wself, imgHeight);
}];
4.在viewController.m里
给数组传值
cell.indexPath=indexPath;
cell.goods = goods;
__weak __typeof(&*self) wself = self;
[cell setImgDetailTCblock:^(ImgDetailTC*cell,CGFloat height) {
CGFloat oldHeight=[[self.imagesHeightArray objectAtIndex:cell.indexPath.row] doubleValue];
if(oldHeight == height){
return ;
}
[wself.imagesHeightArray replaceObjectAtIndex:cell.indexPath.row withObject:@(height)];
[wself.tableView reloadData];
}];
每个cell的高度
CGFloat height = [[self.imagesHeightArray objectAtIndex:indexPath.row] doubleValue];
return height;
