iOS 6上的NSTextAlignmentJustified到UILable textAligment将会崩溃

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我现在使用 Xcode4.5和iOS6,iOS6已经改变了UILable的textAlignment,
  1. label.textAlignment = NSTextAlignmentJustified;

代码将在使用ios6 SDK的iPhone 6.0 Simulator上崩溃.但不会在iPhone 5.0模拟器与iOS6 SDK崩溃.

iOS6支持NSTextAlignmentJustified,但为什么会崩溃?

解决方法

编辑1:

使用NSAttributedString我们可以证明文本.

  1. NSMutableParagraphStyle *paragraphStyles = [[NSMutableParagraphStyle alloc] init];
  2. paragraphStyles.alignment = NSTextAlignmentJustified;
  3. paragraphStyles.firstLineHeadIndent = 0.05; // Very IMP
  4.  
  5. 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.";
  6. NSDictionary *attributes = @{NSParagraphStyleAttributeName: paragraphStyles};
  7. NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:stringTojustify attributes:attributes];
  8.  
  9. self.lblQuote.attributedText = attributedString;
  10. self.lblQuote.numberOfLines = 0;
  11. [self.lblQuote sizeToFit];

UITextAlignmentJustify的弃用,在iOS 6下不再可用.

在这个SO link也提供了所有可能的解决方
看看this pageiOS6 prerelease Documentation.

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