how to find actual height of auto growable UILabel

Question

I have given number of lines to zero for UIlabel so that its height will adjust according its content.

sometimes If I give a big text it grows unto 4 lines in UI but when I access its

frame.size.height

it returns 21 instead of actual height which is way more bigger than that.

Any ideas on how to fix this ?

where you called this `frame.size.height` in didload or else — Anbu.Karthik, May 03 '18 at 08:13
This could help https://stackoverflow.com/questions/30450434/figure-out-size-of-uilabel-based-on-string-in-swift — Vinaykrishnan, May 03 '18 at 08:42

score 1 · Answer 1 · answered May 03 '18 at 08:47

1

In your View Controller you can use method which notify you about layout finishing:

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        print("frame = \(label.frame)")
    }

answered May 03 '18 at 08:47

biloshkurskyi.ss

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score 1 · Accepted Answer · answered May 03 '18 at 10:48

swift

public  static func requiredHeightForLabel(text : String, font : UIFont, width : CGFloat)   -> CGFloat {

    let label:UILabel = UILabel(frame: CGRect(x: 0, y: 0, width: width, height: .greatestFiniteMagnitude))//UILabel(frame: CGRectMake(0, 0, width, CGFloat.max))
    label.numberOfLines = 0
    label.lineBreakMode = .byWordWrapping
    label.font = font
    label.text = text

    label.sizeToFit()
    return label.frame.height
}

objective c

+(CGFloat)getLabelHeightForString:(NSString *)string font:(UIFont *)font 
{
CGSize size = CGSizeMake(lablwidth, MAXFLOAT);

NSStringDrawingContext *context = [[NSStringDrawingContext alloc] init];

CGSize boundingBox = [string boundingRectWithSize:size

                                          options:NSStringDrawingUsesLineFragmentOrigin

                                       attributes:@{NSFontAttributeName:font}

                                          context:context].size;

size = CGSizeMake(ceil(boundingBox.width), ceil(boundingBox.height));

return size.width;

}

this give you exact height of the label according to text size — Satheeshkumar Naidu, May 03 '18 at 10:49

how to find actual height of auto growable UILabel

2 Answers2