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@brynbodayle
Created July 25, 2014 16:29
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Multiline UIButton + Auto Layout
- (CGSize)intrinsicContentSize {
CGSize boundingSize = CGSizeMake(self.titleLabel.preferredMaxLayoutWidth - self.titleEdgeInsets.left - self.titleEdgeInsets.right, CGFLOAT_MAX);
NSAttributedString *attributedTitle = [self attributedTitleForState:self.state];
CGRect boundingRect;
if(attributedTitle) {
boundingRect = [attributedTitle boundingRectWithSize:boundingSize options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading) context:NULL];
}
else {
NSString *title = [self titleForState:self.state];
boundingRect = [title boundingRectWithSize:boundingSize options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading) attributes:@{NSFontAttributeName : self.titleLabel.font} context:NULL];
}
return CGSizeMake(boundingRect.size.width + self.titleEdgeInsets.left + self.titleEdgeInsets.right, boundingRect.size.height + self.titleEdgeInsets.top + self.titleEdgeInsets.bottom);
}
@seapy
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seapy commented Feb 25, 2016

@AlexandrGraschenkov solution is works

@mickeyl
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mickeyl commented Mar 14, 2017

Works fine, however I found that we need to take contentEdgeInsets into account as well, since some people might have set both.

@starduliang
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@lalkrishna
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This works for me.

class MultiLineButton: UIButton {

    // MARK: - Init

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)

        self.commonInit()
    }

    private func commonInit() {
        self.titleLabel?.numberOfLines = 0
        self.titleLabel?.lineBreakMode = .byWordWrapping
    }

    // MARK: - Overrides

    override var intrinsicContentSize: CGSize {
        titleLabel?.intrinsicContentSize ?? .zero
    }

    override func layoutSubviews() {
        super.layoutSubviews()
        titleLabel?.preferredMaxLayoutWidth = titleLabel?.frame.size.width ?? 0
        super.layoutSubviews()
    }

}

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