Cell size not changing dynamically - ios

Question

I am creating a Iphone app with UITableView. In that I want to change the cell size with respect to text. I used the following code. But it fails.
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
// CGRect screenBounds = [[UIScreen mainScreen] bounds];
// CGSize screenSize = screenBounds.size;
NSStringDrawingContext *ctx = [NSStringDrawingContext new];
NSAttributedString *aString = [[NSAttributedString alloc] initWithString:[message objectAtIndex:0]];
UITextView *calculationView = [[UITextView alloc] init];
[calculationView setAttributedText:aString];
CGRect textRect = [calculationView.text boundingRectWithSize:self.view.frame.size options:NSStringDrawingUsesLineFragmentOrigin attributes:#{NSFontAttributeName:calculationView.font} context:ctx];
// CGSize size = [calculationView sizeThatFits:CGSizeMake(screenSize.width, FLT_MAX)];
return textRect.size.height;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"SimpleTableCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
[cell.textLabel setLineBreakMode:NSLineBreakByWordWrapping];
[cell.textLabel sizeToFit];
if(cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
cell.imageView.image = [UIImage imageNamed:#"gg.jpg"];
cell.textLabel.text = [NSString stringWithFormat:[message objectAtIndex:0], indexPath.row];
return cell;
}
Thanks in advance.

Answer 1

first you need to get text size.. and according this size you can set cell height.. like this example
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
CGSize contsize={260.00f,3000.00f};
UIFont *font=[UIFont fontWithName:#"Open Sans" size:15.0];
NSString *strt11=#"comment_text"
CGSize fontSize=[test sizeWithFont:font constrainedToSize:contsize lineBreakMode:NSLineBreakByWordWrapping];
if (fontSize.height>22)
return fontSize.height+60.0f;
return 80.0f;
}
and also put this code in cellForRowAtIndexPath method for set uilabel height..

Answer 2

Please use the below code.
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *text = [array_loaddata objectAtIndex:indexPath.row] ;
UIFont *font = [UIFont systemFontOfSize:10];
NSAttributedString *attributedText =
[[NSAttributedString alloc]
initWithString:cellText
attributes:#
{
NSFontAttributeName: cellFont
}];
CGRect rect = [attributedText boundingRectWithSize:(CGSize){kWIDTH_FOR_MESSAGE_LABEL, MAXFLOAT}
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
return rect.size.height + 75;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier =[NSString stringWithFormat:#"Cell%d",indexPath.row] ;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
NSString *text = [array_loaddata objectAtIndex:indexPath.row] ;
UIFont *font = [UIFont systemFontOfSize:10];
NSAttributedString *attributedText =
[[NSAttributedString alloc]
initWithString:cellText
attributes:#
{
NSFontAttributeName: cellFont
}];
CGRect rect = [text boundingRectWithSize:(CGSize){kWIDTH_FOR_MESSAGE_LABEL, MAXFLOAT}
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(46, 0,kWIDTH_FOR_MESSAGE_LABEL, rect.size.height)];
label.numberOfLines = 0;
label.textColor = [UIColor grayColor];
label.lineBreakMode = NSLineBreakByWordWrapping;
label.text = (text ? text : #"");
label.font = font;
label.backgroundColor = [UIColor clearColor];
[cell.contentView addSubview:label];
[label release];
}

Answer 3

As Simple as that :
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return UITableViewAutomaticDimension;
}