NSTextAlignmentJustified to UILable textAligment on iOS6 will crash

Question

I am use Xcode4.5 and iOS6 now, the iOS6 have change the UILable's textAlignment,

label.textAlignment = NSTextAlignmentJustified;

The code will crash on iPhone 6.0 Simulator with ios6 SDK. but not crash on iPhone 5.0 Simulator with iOS6 SDK.

The iOS6 support NSTextAlignmentJustified, but why will crash?

Answer 1

Edit 1:

Using NSAttributedString we can justify text.

NSMutableParagraphStyle *paragraphStyles = [[NSMutableParagraphStyle alloc] init];
paragraphStyles.alignment                = NSTextAlignmentJustified;
paragraphStyles.firstLineHeadIndent      = 0.05;    // Very IMP

NSString *stringTojustify                = @"We are what our thoughts have made us; so take care about what you think. Words are secondary. Thoughts live; they travel far.";
NSDictionary *attributes                 = @{NSParagraphStyleAttributeName: paragraphStyles};
NSAttributedString *attributedString     = [[NSAttributedString alloc] initWithString:stringTojustify attributes:attributes];

self.lblQuote.attributedText             = attributedString;
self.lblQuote.numberOfLines              = 0;
[self.lblQuote sizeToFit];

Deprecation of UITextAlignmentJustify, not available anymore under iOS 6.

All possible solutions to justified text are given at this SO link also have a look at this page and iOS6 prerelease Documentation.