UITableViewCell自适应高度

方式一:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

    //cell宽度取系统cell width;
    CGFloat contentwidth = self.tableView.frame.size.width;
    //字体大小和下面的 heightForCell保持一致;
    UIFont *font = [UIFont systemFontOfSize:17.0];
    //当前cell数据;
    NSString *contentText = [self.dataArray objectAtIndex:indexPath.row];
    //计算cell数据文本大小;
    CGSize contentSize = [contentText sizeWithFont:font constrainedToSize:CGSizeMake(contentwidth, 1000) lineBreakMode:NSLineBreakByCharWrapping];
   

    
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (!cell) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }
    
    //重置cell rect大小;
    CGRect cellRect = [cell.textLabel textRectForBounds:cell.textLabel.frame limitedToNumberOfLines:0];
    cellRect.size = contentSize;
    cell.textLabel.frame = cellRect;
    cell.textLabel.text = contentText;
    //设置cell的textLable可以多行文本显示;
    cell.textLabel.numberOfLines = 0;
    //设置字体大小和颜色;
    cell.textLabel.textColor = [UIColor blueColor];
    cell.textLabel.font = font;

    return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    //重新计算每行的cell的高度;
    CGFloat contentWith = self.tableView.frame.size.width;
    UIFont *font = [UIFont systemFontOfSize:17.0];
    NSString *content = [self.dataArray objectAtIndex:indexPath.row];
    CGSize contentSize = [content sizeWithFont:font constrainedToSize:CGSizeMake(contentWith, 1000) lineBreakMode:NSLineBreakByCharWrapping];
    
    return contentSize.height+25;
}
View Code

方式二:

UITableViewCell 里面的 layoutSubViews方法里面写

//再画布重绘的时候,重置cell自适应高度;
-(void)layoutSubviews
{
    [super layoutSubviews];
    _cou_title.text = _dataModel.cou_title;
    _cou_publish_date.text = [NSString stringWithFormat:@"发布日期:%@",_dataModel.cou_publish_date];
    _cou_expiration_date.text = [NSString stringWithFormat:@"结束日期:%@",_dataModel.cou_expiration_date];
    _cou_description.text = _dataModel.cou_description;


    CGSize descriSize = [_dataModel.cou_description sizeWithFont:[UIFont systemFontOfSize:15.0] constrainedToSize:CGSizeMake(300, 200) lineBreakMode:NSLineBreakByCharWrapping];
    _cou_description.frame = CGRectMake(_cou_description.frame.origin.x, _cou_description.frame.origin.y,_cou_description.frame.size.width, descriSize.height);
    
}
View Code

 

posted @ 2013-05-20 18:57  cocoajin  阅读(366)  评论(0编辑  收藏  举报