Macos 附加NSAttributedString未按预期工作

我正在尝试附加属性字符串以生成和弦名称，如“G#m7”，其中#和7为上标。我是这样做的：

NSFont* font = [NSFont fontWithName:kGillSans size:24];
NSMutableDictionary* attributeNormal = [[NSMutableDictionary alloc] init];
[attributeNormal setObject:font forKey:NSFontAttributeName];
[attributeNormal setObject:color forKey:NSForegroundColorAttributeName];

NSFont* fontSmall = [NSFont fontWithName:kGillSans size:14];
NSMutableDictionary* attributeSuperScript = [[NSMutableDictionary alloc] init];
[attributeSuperScript setObject:fontSmall forKey:NSFontAttributeName];
[attributeSuperScript setObject:[NSNumber numberWithInteger:5] forKey:NSSuperscriptAttributeName];
[attributeSuperScript setObject:color forKey:NSForegroundColorAttributeName];


NSAttributedString* pitch = [[NSAttributedString alloc] initWithString:@"G" attributes:attributeNormal];

NSAttributedString* accidental = [[NSAttributedString alloc] initWithString:@"#" attributes:attributeSuperScript];

NSAttributedString* quality = [[NSAttributedString alloc] initWithString:@"m" attributes:attributeNormal];

NSAttributedString* seventh = [[NSAttributedString alloc] initWithString:@"7" attributes:attributeSuperScript];

NSMutableAttributedString* fullString = [[NSMutableAttributedString alloc] initWithAttributedString:pitch];
[fullString appendAttributedString:accidental];
[fullString appendAttributedString:quality];
[fullString appendAttributedString:seventh];

然后，我将其添加到CATextLayer中进行显示。不幸的是，它没有按预期工作。上标不是上标，返回的[fullstring size]与上标不符，导致图层难以放置。我打开了边框宽度以演示大小问题

我已经为上标属性尝试了不同的字体大小和值。有什么想法吗

试试这个：

NSFont* font = [NSFont fontWithName:@"GillSans" size:24];
NSDictionary * attributeNormal = @{NSFontAttributeName: font,
                                   NSForegroundColorAttributeName: [NSColor blackColor]};

NSFont* fontSmall = [NSFont fontWithName:@"GillSans" size:14];
NSDictionary * attributeSuperScript = @{NSFontAttributeName: fontSmall,
                                        NSSuperscriptAttributeName: @(2),
                                        NSForegroundColorAttributeName: [NSColor blackColor]};

NSMutableAttributedString* fullString =
[[NSMutableAttributedString alloc]
 initWithAttributedString:[[NSAttributedString alloc]
                           initWithString:@"G"
                           attributes:attributeNormal]];

[fullString appendAttributedString:
 [[NSAttributedString alloc] initWithString:@"#"
                                 attributes:attributeSuperScript]];

[fullString appendAttributedString:
 [[NSAttributedString alloc] initWithString:@"m"
                                 attributes:attributeNormal]];

[fullString appendAttributedString:
 [[NSAttributedString alloc] initWithString:@"7"
                                 attributes:attributeSuperScript]];

---

仅供参考：我有一个NSAttributedString类别initWithArray:方法，它使用一个属性/字符串数组来初始化NSAttributedString:NSAttributedString*fullString=[[NSAttributedString alloc]initWithArray:@[attributeNormal，@“Welcome to”，attributeBold，@“GeoWorld”，attributeNormal，@“！（现在回家）”；如果您想要副本，请给我发消息。我已将其放在我的dropbox上：。嘿，谢谢，但这与我的代码没有任何区别，结果是相同的。结果看起来是通过[[myTextView textStorage]setAttributedString:fullString]查找的；。也许CATextLayer正在剥离/忽略这些属性？您使用什么方法设置字符串？