Justify Text in UILabel iOS

Question

I am having a problem that in iOS I am using UILabel to display 2,3 line text, I want to align text as justified but I am not finding any option to do so. Any suggestions how to make justify text in label?

i put these line to make start it from top

CGSize maximumSize = CGSizeMake(300, 9999);
NSString *textString = someString;
UIFont *textFont = [UIFont fontWithName:@"Futura" size:14];
CGSize textStringSize = [textString sizeWithFont:textFont 
                               constrainedToSize:maximumSize 
                                   lineBreakMode:text.lineBreakMode];

CGRect textFrame = CGRectMake(10, 110, 300, textStringSize.height);
text.frame = textFrame;

so any trick like this to make it justfiy Thanks

Answer 1

There is now a convenient way to justify text since iOS6. You can create an instance of NSAttributedString, set appropriate properties and assign this attributed string to a text representing view such as UILabel, UITextView, etc. It's easy as this:

1. Create an instance of NSMutableParagraphStyle and set its properties.

    NSMutableParagraphStyle *paragraphStyles = [[NSMutableParagraphStyle alloc] init]; paragraphStyles.alignment = NSTextAlignmentJustified; //justified text paragraphStyles.firstLineHeadIndent = 10.0; //must have a value to make it work 

2. Create NSDictionary for text attributes and create attributed string.

    NSDictionary *attributes = @{NSParagraphStyleAttributeName: paragraphStyles}; NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString: string attributes: attributes]; 

3. Set attributed string to a label.

    existingLabel.attributedText = attributedString; 

Answer 2

Can't be done I'm afraid - well not with UILabel.

You can use the UIWebView or a 3rd party library such as OHAttributedLabel

Happy Coding :)

Update:

This answer has been obsolete since iOS6. Please refer to Tankista's answer.

Answer 3

SWIFT 4.x

version of approved answer:

1. Create an instance of NSMutableParagraphStyle and set its properties.

    let justifiedParagraphStyles: NSMutableParagraphStyle = NSMutableParagraphStyle.init() justifiedParagraphStyles.alignment = .justified //justified text justifiedParagraphStyles.firstLineHeadIndent = 10.0 //must have a value to make it work 

2. Create NSDictionary for text attributes and create attributed string.

    let attributes = [NSAttributedStringKey.paragraphStyle: justifiedParagraphStyles] let attributedString = NSAttributedString.init(string: string, attributes: attributes) 

3. Set attributed string to a label.

    existingLabel.attributedText = attributedString 

Answer 4

It can be done easily, but you need to use Core Text.

subclass a UIView , add an NSString property, create an NSAttributedString and pass kCTJustifiedTextAlignment value for the kCTParagraphStyleSpecifierAlignment key, then draw the NSAttributedString using Quartz or CoreText in your drawrect method.

edit: kCTParagraphStyleSpecifierAlignment key kCTJustifiedTextAlignment value should be used to create a CTParagraphStyleRef struct and passed in as a value for kCTParagraphStyleAttributeName key when creating the NSAttributedString .

Answer 5

As mentionned by @martin, my class OHAttributedLabel can make this very easily. (You will find it on my github and also find plenty of references to it on SO as well)