CODEWITHSUNDEEP
iosuibuttonautolayout
Julian
Julian

Reputation: 9337

UIButton does not grow vertically according to length of text inside

I have a problem with creating a button that will grows vertically according to length of the text set as its title. I have seen similar problem but that solution won't work in this case. When I set:

 label.numberOfLines = 0

then there is possibility to show multiline text but that doesn't affect button height itself. Has anyone faced that problem and found out nice and generic solution. I would love to avoid hardcoding some values for button's intrinsic size etc.

Upvotes: 1

Views: 1689

Answers (3)

Fozzle
Fozzle

Reputation: 593

I ran into this myself and solved it by adding a height constraint to the button and overriding updateViewConstraints. Kind of hacky.

- (void)updateViewConstraints
{
    self.myButtonHeightConstraint.constant = self.myButton.titleLabel.frame.size.height;
    [super updateViewConstraints];
}

I also filed a bug with Apple about the UIButton not resizing to fit it's UIButtonLabel.

2017 version of code:

override func updateConstraints() {

    let h = titleLabel!.frame.size.height
    self.heightAnchor.constraint(equalToConstant: h).isActive = true
    super.updateConstraints()
}

Upvotes: 2

BSevo
BSevo

Reputation: 793

I see that is similar problem to this UIButton that resizes to fit its titleLabel

I had the same problem with UIButton with multilined text, and it also had an image. I used sizeThatFits: to calculate the size but it calculated wrong height.

I did not make it UIButtonTypeCustom, instead of that I called sizeThatFits: on button's titleLabel with size with smaller width (due to image in button):

CGSize buttonSize = [button sizeThatFits:CGSizeMake(maxWidth, maxHeight)];
CGSize labelSize = [button.titleLabel sizeThatFits:CGSizeMake(maxWidth - offset, maxHeight)]; // offset for image
buttonSize.height = labelSize.height;
buttonFrame.size = buttonSize;

And then I used height from that size to set button's frame correctly, and it WORKED :)

Maybe they have some bug in internal sizing of UIButton.

Upvotes: 1

Julian
Julian

Reputation: 9337

I have solved the issue by creating my own button, adding a label and setting constraints in the way that label's size determines the size of the button.

Upvotes: 1

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