NSString *nameString = self.dataArray[indexPath.row][@"user"];

        NSDictionary *nameLabelAttr=@{NSFontAttributeName:LLShowMessageNameFont};

 //// 自适应宽度

float rightNameWidth=[nameString sizeWithFont:[UIFont systemFontOfSize:15] constrainedToSize:CGSizeMake(1000, 20)].width;

//// 自适应高度

        CGSize nameLabelMaxSize=CGSizeMake(rightNameWidth, MAXFLOAT);

        CGSize nameLabelSize=[nameString boundingRectWithSize:nameLabelMaxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:nameLabelAttr context:nil].size;

        CGFloat nameLabelX = CGRectGetMaxX(cell.iconView.frame) + LLShowMessageCellBorder*kWidthScale;

        CGFloat nameLabelY = cell.iconView.origin.y;

        cell.nameLabel.frame = (CGRect){{nameLabelX, nameLabelY}, nameLabelSize};

        cell.nameLabel.text = nameString;

////如果出现了文字不能全部显示，需要加上一下代码，即可

        [cell.nameLabel sizeToFit];

lable自适应宽度和高度