Krunal Krunal - 6 months ago 20
iOS Question

UITableViewCell with dynamic height iOS

I have implemented TableView with CustomCell in my app,

I want dynamic height of my

UITableViewCell
according to text length in
UITableViewCell
,

here is the snapshot of
Customcell


:
and here is the snapshot of my
UITableView

:
code snippet for
heightForRowAtIndexPath


#define FONT_SIZE 14.0f
#define CELL_CONTENT_WIDTH 320.0f
#define CELL_CONTENT_MARGIN 10.0f

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
{
NSString *text = [DescArr objectAtIndex:[indexPath row]];
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
CGFloat height = MAX(size.height, 100.0);
return height;
}


As you can see in the 2nd image, height for cell is fixed, it doesn't change with it's text size.

Where am I making mistake?

NHS NHS
Answer

The following code worked fine for me.Try with this

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{

    CGFloat lRetval = 10;
    CGSize maximumLabelSize = CGSizeMake(231, FLT_MAX);
    CGSize expectedLabelSize;


    CGFloat numberoflines = [thirdcellText length]/17.0;

    if (indexPath.section == 0) {
        expectedLabelSize = [firstcellText sizeWithFont:[UIFont systemFontOfSize:16.0]
                                      constrainedToSize:maximumLabelSize
                                          lineBreakMode:NSLineBreakByWordWrapping];
        lRetval = expectedLabelSize.height;
    }
    else if(indexPath.section == 1)
    {
        expectedLabelSize = [secondcellText sizeWithFont:[UIFont systemFontOfSize:16.0]
                                       constrainedToSize:maximumLabelSize
                                           lineBreakMode:NSLineBreakByWordWrapping];
        lRetval = expectedLabelSize.height;
    }
    else if (indexPath.section == 2)
    {
        expectedLabelSize = [thirdcellText sizeWithFont:[UIFont systemFontOfSize:16.0]
                                       constrainedToSize:CGSizeMake(231, numberoflines*17.0)
                                           lineBreakMode:NSLineBreakByWordWrapping];
        lRetval = expectedLabelSize.height-128.0;
    }

    UIImage *factoryImage = [UIImage imageNamed:NSLocalizedString(@"barcode_factory_reset.png", @"")];

    CGFloat height = factoryImage.size.height;

    if (lRetval < height) {
        lRetval = height+15.0;
    }

    return lRetval;
}

Try to add the following code in your customcell class autolayout method

textview.frame = frame;
CGRect frame1 = textview.frame;
frame1.size.height = textview.contentSize.height-2;
textview.frame = frame1;


textview.contentSize = CGSizeMake(textview.frame.size.width, textview.frame.size.height);

labelPtr.frame = CGRectMake(CGRectGetMinX(imageView.frame)+CGRectGetMaxX(imageView.frame)+5.0, textview.frame.size.height+10.0, 140, 16.0);
[labelPtr setNeedsDisplayInRect:labelPtr.frame];

Try to set the label properties like the following

labelPtr = [[UILabel alloc] initWithFrame:CGRectZero];
labelPtr.backgroundColor =[UIColor clearColor];
[labelPtr setNeedsLayout];
[labelPtr setNeedsDisplay];
[self.contentView addSubview:labelPtr];