如何根据文本视图中的内容更改自定义表格视图单元格高度和文本视图高度

Question

我创建了一个带有文本视图的自定义单元格。我需要在不使用自动布局的情况下根据textview中的内容扩展textview的高度和自定义单元格的高度。谁能帮帮我

这是代码：

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}

- (CGFloat)tableView:(UITableView *)tableView  heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 80;   
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return sendername.count;
}

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

static NSString *CellIdentifier1 = @"MenuCtrl";

tsecureMsgConCell *cell = [tabVieConv dequeueReusableCellWithIdentifier:CellIdentifier1];

if (cell == nil)
{
    NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"MsgConCell" owner:self options:nil];
    cell = [nib objectAtIndex:0];
}

cell.userName.text       = [sendername objectAtIndex:indexPath.row];
cell.msgContentTxView.text     = [msgContents objectAtIndex:indexPath.row];


NSString * sentDateCell  = [msgSenddate objectAtIndex:indexPath.row];
NSString * replyDateCell = [msgRevidate objectAtIndex:indexPath.row];
thredIdCell              = [TSecureMsgId objectAtIndex:indexPath.row];

if ([sentDateCell isEqualToString:@"NULL"])
{
     cell.dateLbl.text = [msgRevidate objectAtIndex:indexPath.row];
     cell.timeLbl.text = [msgRecTime objectAtIndex:indexPath.row];
     cell.imgVew.image = [UIImage imageNamed:@"recive.png"];
}

else if ([replyDateCell isEqualToString:@"NULL"])
{
    cell.dateLbl.text = [msgSenddate objectAtIndex:indexPath.row];
    cell.timeLbl.text = [msgSendTime objectAtIndex:indexPath.row];
    cell.imgVew.image = [UIImage imageNamed:@"sent.png"];
}

return cell;

}

msgContentTxView - 是我的文本视图

Answer 1

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSUInteger row = indexPath.row;
    if (row != NSNotFound)
    {


        if ([exapmlestring length] > 0)
        {
            CGFloat padding = 17.0f;

            CGFloat labelWidth = self.tableview.bounds.size.width - padding*2;
            NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
                                                  [UIFont fontWithName:@"HelveticaNeue" size:17.0], NSFontAttributeName,
                                                  nil];

            NSAttributedString *text = [[NSAttributedString alloc] initWithString:exapmlestring attributes:attributesDictionary];
            NSStringDrawingOptions options = NSStringDrawingUsesLineFragmentOrigin;

///size
            CGRect boundingRect = [text boundingRectWithSize:CGSizeMake(labelWidth, CGFLOAT_MAX)
                                                     options:options
                                                     context:nil];


            boundingRect.size.height = boundingRect.size.height + 100;

            return (CGFloat) (ceil(boundingRect.size.height) + padding*2);
        }
    }

    return 0;
}