NSTextAlignmentJustified在iOS7中不起作用

Question

我有一个NSTextAlignmentJustified用于的应用程序NSAttributedString.在iOS 6中,一切都很好.但是在iOS 7中运行的相同App (模拟器或设备没有任何区别)显示没有任何Justify.此外,从iOS 6到7,线条间距似乎发生了巨大变化.

其他人遇到过这个问题？有没有办法在iOS 7中制作合理的Textblock(在iOS 6中也能正常工作？)

此致,马库斯

Answer 1

好吧,我找到了一种在iOS 7中制作标签Justifiy的方法:我只需将NSBaselineOffsetAttributeName设置为0.

不知道它为什么会起作用,但它确实有效.

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;
    paragraphStyle.alignment = NSTextAlignmentJustified;

NSAttributedString *string = [[NSAttributedString alloc] initWithString:rawString 
          attributes:[NSDictionary dictionaryWithObjectsAndKeys:
          paragraphStyle, NSParagraphStyleAttributeName , 
          [NSNumber numberWithFloat:0],NSBaselineOffsetAttributeName, 
          nil]];

Answer 2

设置firstLineHeadIndent上NSMutableParagraphStyle也工作了.

NSMutableParagraphStyle *paragraphStyles = [[NSMutableParagraphStyle alloc] init];
paragraphStyles.alignment                = NSTextAlignmentJustified;    // To justified text
paragraphStyles.firstLineHeadIndent      = 0.05;    // IMP: must have a value to make it work

NSString *stringTojustify                = @"No one wakes up excited to see more advertising, no one goes to sleep thinking about the ads they’ll see tomorrow.";
NSDictionary *attributes                 = @{NSParagraphStyleAttributeName: paragraphStyles};
NSAttributedString *attributedString     = [[NSAttributedString alloc] initWithString:stringTojustify attributes:attributes];

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