ios - NSMutableAttributedString 垂直对齐

Question

我有一个椭圆形的文本路径。对于填充路径，我使用了 NSMutableAttributedString:

UIFont *font = [UIFont fontWithName:@"font name" size:15];
NSMutableParagraphStyle *mutParaStyle=[[NSMutableParagraphStyle alloc] init];

[mutParaStyle setAlignment:NSTextAlignmentCenter];
[mutParaStyle setLineBreakMode:NSLineBreakByWordWrapping];

NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObjectsAndKeys:font
                                 ,NSFontAttributeName,mutParaStyle ,NSParagraphStyleAttributeName,nil]; 

NSMutableAttributedString  *strText = [[NSMutableAttributedString alloc] initWithString:text attributes:attrsDictionary];

但这只适用于水平文本对齐。我如何应用垂直对齐？

我有这样的结果:

但我需要这个:

Answer 1

但我已经尝试过垂直它对我来说工作正常，下面是屏幕截图让我知道如果我错了，下面还附有代码:--

NSString *allTheText = [tv string];
NSFont *font = [NSFont fontWithName:@"Helvetica" size:24];
NSMutableParagraphStyle *mutParaStyle=[[NSMutableParagraphStyle alloc] init];

[mutParaStyle setAlignment:kCTTextAlignmentRight];
[mutParaStyle setLineBreakMode:NSLineBreakByWordWrapping];

NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObjectsAndKeys:font
                                 ,NSFontAttributeName,mutParaStyle ,NSParagraphStyleAttributeName,nil];

NSMutableAttributedString  *strText = [[NSMutableAttributedString alloc] initWithString:allTheText attributes:attrsDictionary];
[tv .textStorage appendAttributedString:strText];