屬性介紹
NSFontAttributeName字體大小
NSForegroundColorAttributeName字體顏色
NSBackgroundColorAttributeName字體背景顏色
UIKIT_EXTERN NSString * const NSFontAttributeName NS_AVAILABLE(10_0, 6_0);
// UIFont, default Helvetica(Neue) 12 默認12號 Helvetica 字體
UIKIT_EXTERN NSString * const NSForegroundColorAttributeName NS_AVAILABLE(10_0, 6_0);
// UIColor, default blackColor 默認黑色
UIKIT_EXTERN NSString * const NSBackgroundColorAttributeName NS_AVAILABLE(10_0, 6_0);
// UIColor, default nil: no background 背景色默認沒有
測試代碼
NSString *testStr =[NSString stringWithFormat:@"我是測試數(shù)據(jù)"];
NSDictionary *dict =@{ NSFontAttributeName:[UIFont systemFontOfSize:17]//字體大小
,NSForegroundColorAttributeName:[UIColor redColor]//字體顏色
,NSBackgroundColorAttributeName:[UIColor greenColor]//字體背景顏色
};
NSAttributedString *attrStr =[[NSAttributedString alloc] initWithString:testStr attributes:dict];
self.testLable.attributedText = attrStr;
顯示結(jié)果：
NSLigatureAttributeName（連體字符）
UIKIT_EXTERN NSString * const NSLigatureAttributeName NS_AVAILABLE(10_0, 6_0);
// NSNumber containing integer, default 1: default ligatures, 0: no ligatures
//
該屬性所對應(yīng)的值是一個 NSNumber 對象(整數(shù))。連體字符是指某些連在一起的字符，它們采用單個的圖元符號。0 表示沒有連體字符。1 表示使用默認的連體字符。2表示使用所有連體符號。默認值為 1（注意，iOS 不支持值為 2）。
NSKernAttributeName字符間距
UIKIT_EXTERN NSString * const NSKernAttributeName NS_AVAILABLE(10_0, 6_0);
// NSNumber containing floating point value, in points; amount to modify default kerning. 0 means kerning is disabled.
NSKernAttributeName 設(shè)定字符間距，取值為 NSNumber 對象（整數(shù)），正值間距加寬，負值間距變窄
測試代碼
NSString *testStr =[NSString stringWithFormat:@"hello worlid"];
NSDictionary *dict =@{
NSKernAttributeName:@(5)
};
NSAttributedString *attrStr =[[NSAttributedString alloc] initWithString:testStr attributes:dict];
self.testLable.attributedText = attrStr;
顯示效果
NSStrikethroughStyleAttributeName(刪除線)
NSStrikethroughColorAttributeName(刪除線顏色)
UIKIT_EXTERN NSString * const NSStrikethroughStyleAttributeName NS_AVAILABLE(10_0, 6_0);
// NSNumber containing integer, default 0: no strikethrough
// NSNumber類型 默認值0 沒有刪除線
UIKIT_EXTERN NSString * const NSStrikethroughColorAttributeName NS_AVAILABLE(10_0, 7_0);
// UIColor, default nil: same as foreground color
NSStrikethroughStyleAttributeName 設(shè)置刪除線，取值為 NSNumber 對象（整數(shù)），枚舉常量 NSUnderlineStyle中的值：
NSUnderlineStyleNone 不設(shè)置刪除線
NSUnderlineStyleSingle 設(shè)置刪除線為細單實線
NSUnderlineStyleThick 設(shè)置刪除線為粗單實線
NSUnderlineStyleDouble 設(shè)置刪除線為細雙實線
默認值是NSUnderlineStyleNone。
測試代碼：
NSDictionary *dict =@{
NSStrikethroughStyleAttributeName:@(2)//刪除線
};
NSAttributedString *attrStr =[[NSAttributedString alloc] initWithString:testStr attributes:dict];
self.testLable.attributedText = attrStr;
顯示效果：
NSUnderlineStyleAttributeName(下劃線)
NSUnderlineColorAttributeName下劃線顏色）
UIKIT_EXTERN NSString * const NSUnderlineStyleAttributeName NS_AVAILABLE(10_0, 6_0);
// NSNumber containing integer, default 0: no underline
// NSNumber類型 默認值0 沒有下劃線
UIKIT_EXTERN NSString * const NSUnderlineColorAttributeName NS_AVAILABLE(10_0, 7_0);
// UIColor, default nil: same as foreground color
// 下劃線顏色，如果為nil則等同字體顏色
代碼示例：
NSString *testStr =[NSString stringWithFormat:@"hello worlid"];
NSDictionary *dict =@{
NSStrikethroughStyleAttributeName:@(2),//刪除線
NSUnderlineStyleAttributeName:@(2)//下劃線
NSUnderlineColorAttributeName:[UIColor blackColor],//下劃線顏色
};
NSAttributedString *attrStr =[[NSAttributedString alloc] initWithString:testStr attributes:dict];
self.testLable.attributedText = attrStr;
顯示效果：
NSStrokeColorAttributeName(邊線顏色)
NSStrokeWidthAttributeName(邊線寬度)
UIKIT_EXTERN NSString * const NSStrokeColorAttributeName NS_AVAILABLE(10_0, 6_0);
// UIColor, default nil: same as foreground color
UIKIT_EXTERN NSString * const NSStrokeWidthAttributeName NS_AVAILABLE(10_0, 6_0);
// NSNumber containing floating point value, in percent of font point size, default 0: no stroke; positive for stroke alone, negative for stroke and fill (a typical value for outlined text would be 3.0)
設(shè)置文字描邊顏色，需要和NSStrokeWidthAttributeName設(shè)置描邊寬度，這樣就能使文字空心.
NSStrokeWidthAttributeName 這個屬性所對應(yīng)的值是一個 NSNumber 對象(小數(shù))。該值改變筆畫寬度（相對于字體 size 的百分比），負值填充效果，正值中空效果，默認為 0，即不改變。正數(shù)只改變描邊寬度。負數(shù)同時改變文字的描邊和填充寬度。例如，對于常見的空心字，這個值通常為 3.0。
同時設(shè)置了空心的兩個屬性，并且 NSStrokeWidthAttributeName 屬性設(shè)置為整數(shù)，文字前景色就無效果了
NSStrokeColorAttributeName 填充部分顏色，不是字體顏色，取值為 UIColor 對象
測試代碼：
NSString *testStr =[NSString stringWithFormat:@"hello worlid"];
NSDictionary *dict =@{
NSStrokeColorAttributeName:[UIColor redColor],//邊線顏色
NSStrokeWidthAttributeName:@(2),//邊線寬度
};
NSAttributedString *attrStr =[[NSAttributedString alloc] initWithString:testStr attributes:dict];
self.testLable.attributedText = attrStr;
顯示效果：
NSShadowAttributeName(陰影)
UIKIT_EXTERN NSString * const NSShadowAttributeName NS_AVAILABLE(10_0, 6_0);
// NSShadow, default nil: no shadow
// 默認沒有陰影
//陰影
NSShadow *shadow = [[NSShadow alloc] init];
shadow.shadowBlurRadius = 5;//模糊度
shadow.shadowColor = [UIColor blueColor];
shadow.shadowOffset = CGSizeMake(1, 3);
NSString *testStr =[NSString stringWithFormat:@"hello worlid"];
NSDictionary *dict =@{
NSFontAttributeName:[UIFont systemFontOfSize:17],//字體大小
NSShadowAttributeName:shadow,//陰影
};
NSAttributedString *attrStr =[[NSAttributedString alloc] initWithString:testStr attributes:dict];
self.testLable.attributedText = attrStr;
展示效果：
NSTextEffectAttributeName(凸版印刷體)
UIKIT_EXTERN NSString *const NSTextEffectAttributeName NS_AVAILABLE(10_10, 7_0);
// NSString, default nil: no text effect
代碼示例
NSDictionary *dict =@{
NSFontAttributeName:[UIFont systemFontOfSize:17],//字
NSTextEffectAttributeName:NSTextEffectLetterpressStyle,//凸版印刷體
};
展示效果
NSAttachmentAttributeName(文本附件)
NSLinkAttributeName(給文本添加鏈接)
NSBaselineOffsetAttributeName（基準線偏移）
UIKIT_EXTERN NSString * const NSBaselineOffsetAttributeName NS_AVAILABLE(10_0, 7_0);
// NSNumber containing floating point value, in points; offset from baseline, default 0
//NSNumber類型 默認值0，
代碼示例：
NSDictionary *dict =@{
NSFontAttributeName:[UIFont systemFontOfSize:17],//字
NSBaselineOffsetAttributeName:@(15),
};
展示效果：
NSObliquenessAttributeName（字體傾斜）
UIKIT_EXTERN NSString * const NSObliquenessAttributeName NS_AVAILABLE(10_0, 7_0);
// NSNumber containing floating point value; skew to be applied to glyphs, default 0: no skew
代碼示例
NSDictionary *dict =@{
NSFontAttributeName:[UIFont systemFontOfSize:17],//字
NSObliquenessAttributeName:@(1),//字體傾斜
};
展示效果：
NSExpansionAttributeName (文本扁平化)
UIKIT_EXTERN NSString * const NSExpansionAttributeName NS_AVAILABLE(10_0, 7_0);
// NSNumber containing floating point value; log of expansion factor to be applied to glyphs, default 0: no expansion
代碼示例：
NSDictionary *dict =@{
NSFontAttributeName:[UIFont systemFontOfSize:17],//字
NSExpansionAttributeName:@(1),//文本扁平化
};
self.testLable.numberOfLines = 2;//顯示兩行
運行效果：
NSWritingDirectionAttributeName(文本書寫方方向)
UIKIT_EXTERN NSString * const NSWritingDirectionAttributeName NS_AVAILABLE(10_6, 7_0);
// NSArray of NSNumbers representing the nested levels of writing direction overrides as defined by Unicode LRE, RLE, LRO, and RLO characters.
The control characters can be obtained by masking NSWritingDirection and NSTextWritingDirection values.
LRE: NSWritingDirectionLeftToRight|NSWritingDirectionEmbedding,
RLE: NSWritingDirectionRightToLeft|NSWritingDirectionEmbedding,
LRO: NSWritingDirectionLeftToRight|NSWritingDirectionOverride,
RLO: NSWritingDirectionRightToLeft|NSWritingDirectionOverride,
//NSWritingDirectionAttributeName 設(shè)置文字書寫方向，取值為以下組
//@[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionEmbedding)]
//@[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionOverride)]
//@[@(NSWritingDirectionRightToLeft | NSTextWritingDirectionEmbedding)]
//@[@(NSWritingDirectionRightToLeft | NSTextWritingDirectionOverride)]
示例代碼一：
NSDictionary *dict =@{
NSFontAttributeName:[UIFont systemFontOfSize:17],//字
NSWritingDirectionAttributeName:@[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionEmbedding)],//書寫方向
};
運行效果一：
示例代碼二：
NSDictionary *dict =@{
NSFontAttributeName:[UIFont systemFontOfSize:17],//字
NSWritingDirectionAttributeName:@[@(NSWritingDirectionRightToLeft | NSTextWritingDirectionOverride)],//書寫方向
};
運行效果二：
NSVerticalGlyphFormAttributeName(文本顯示方向)
UIKIT_EXTERN NSString * const NSVerticalGlyphFormAttributeName NS_AVAILABLE(10_7, 6_0);
// An NSNumber containing an integer value.
0 means horizontal text. 1 indicates vertical text.
0 水平顯示 1 豎直顯示
If not specified, it could follow higher-level vertical orientation settings.
如果沒指定則水平顯示
Currently on iOS, it's always horizontal.
當前iOS一直水平顯示
The behavior for any other value is undefined.
其他值無效
