iOS6之后 NSAttributedString 福利

@于iOS6之前，需要使用NSMutableAttributedString当你需要导入：CoreText.framework框架的。但在iOS6 之后就不在须要了.

- (void)testOfNSMutableAttributedStringAndNSAttributedString

{

    /**

     *  - (void)addAttribute:(NSString *)name value:(id)value range:(NSRange)range;

     *  主要方法

     *  name   属性名

     *  value  属性相应效果的值

     *  range  效果所映射的范围

     */

    #pragma mark  測试数据0

    NSString *testString = @"NSMutableAttributed---0";

    UILabel *testLabel = [[UILabel alloc] initWithFrame:CGRectMake(60, 100, 200, 40)];

    NSMutableAttributedString * testAttriString = [[NSMutableAttributedString alloc] initWithString:testString];

    // 加入删除线

    [testAttriString addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleSingle] range:NSMakeRange(0, testAttriString.length)];

    // 加入下划线

    [testAttriString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleSingle] range:NSMakeRange(0, testAttriString.length)];

    // 设置文本的字体以及大小

    [testAttriString addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Helvetica-Bold" size:15] range:NSMakeRange(0, testAttriString.length)];

    // 设置笔画的粗细

    [testAttriString addAttribute:NSStrokeWidthAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleDouble] range:NSMakeRange(0, testAttriString.length)];

    // label的背景颜色

    [testAttriString addAttribute:NSBackgroundColorAttributeName value:[UIColor yellowColor] range:NSMakeRange(0, testAttriString.length)];

    // 眼下没測出什么效果.....

    [testAttriString addAttribute:NSVerticalGlyphFormAttributeName value:[NSNumber numberWithInt:1] range:NSMakeRange(0, testAttriString.length)];

    // label上文本颜色(也会影响删除线和下划线的颜色)

    [testAttriString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, testAttriString.length)];

    testLabel.attributedText = testAttriString;

    #pragma mark 測试数据1

    NSString *testString1 = @"NSMutableAttributed---1";

    UILabel *testLabel1 = [[UILabel alloc] initWithFrame:CGRectMake(60, 200, 200, 40)];

    NSMutableAttributedString * testAttriString1 = [[NSMutableAttributedString alloc] initWithString:testString1];

    // 实现文本内容颜色和下划线,删除线的颜色不一样

    // NSStrokeColorAttributeName 单独设置没有效果

    // 必须与NSStrokeWidthAttributeName一起设置

    [testAttriString1 addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleSingle] range:NSMakeRange(0, testAttriString1.length)];

    [testAttriString1 addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, testAttriString1.length)];

    [testAttriString1 addAttribute:NSStrokeColorAttributeName value:[UIColor cyanColor] range:NSMakeRange(0, testAttriString1.length)];

    [testAttriString1 addAttribute:NSStrokeWidthAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleDouble] range:NSMakeRange(0, testAttriString1.length)];

    testLabel1.attributedText = testAttriString1;

    #pragma mark 測试数据2

    NSString *testString2 = @"NSMutableAttributed---2";

    UILabel *testLabel2= [[UILabel alloc] initWithFrame:CGRectMake(60, 300, 200, 40)];

    NSMutableAttributedString * testAttriString2 = [[NSMutableAttributedString alloc] initWithString:testString2];

    // 笔画的阴影效果

    NSShadow *shadow = [[NSShadow alloc] init];

    [shadow setShadowColor:[UIColor colorWithRed:0.053 green:0.088 blue:0.205 alpha:1.000]];

    [shadow setShadowBlurRadius:4.0];

    [shadow setShadowOffset:CGSizeMake(2, 2)];

    [testAttriString2 addAttribute:NSShadowAttributeName value:shadow range:NSMakeRange(0, [testAttriString2 length])];

    testLabel2.backgroundColor = [UIColor clearColor];

    testLabel2.attributedText = testAttriString2;

    [self.view addSubview:testLabel];

    [self.view addSubview:testLabel1];

    [self.view addSubview:testLabel2];

}

使用AttributedString的方式通常有两种：

方式一：

    首先初始化一个NSMutableAttributedString。然后向里面加入文字样式，最后将它赋给控件的AttributedText，该方法适合于文本较少而又须要分段精细控制的情况。

NSString *originStr = @"Hello,中秋节。";

//方式一

//创建 NSMutableAttributedString

NSMutableAttributedString *attributedStr01 = [[NSMutableAttributedString alloc] initWithString: originStr];

//加入属性

//给全部字符设置字体为Zapfino，字体高度为15像素

[attributedStr01 addAttribute: NSFontAttributeName value: [UIFont fontWithName: @"Zapfino" size: 15]

                                                   range: NSMakeRange(0, originStr.length)];

//分段控制，最開始4个字符颜色设置成蓝色

[attributedStr01 addAttribute: NSForegroundColorAttributeName value: [UIColor blueColor] range: NSMakeRange(0, 4)];

//分段控制。第5个字符開始的3个字符。即第5、6、7字符设置为红色

[attributedStr01 addAttribute: NSForegroundColorAttributeName value: [UIColor redColor] range: NSMakeRange(4, 3)];

//赋值给显示控件label01的 attributedText

_label01.attributedText = attributedStr01;

方式二：

      首先创建属性字典，初始化各种属性。然后和须要控制的文本一起创建并赋值给控件的AttributedText，该方法适合于须要控制的文本较多总体控制的情况，一般是从文件里读取的大段文本控制。

//方式二

//创建属性字典

NSDictionary *attrDict = @{ NSFontAttributeName: [UIFont fontWithName: @"Zapfino" size: 15],

                            NSForegroundColorAttributeName: [UIColor blueColor] };

//创建 NSAttributedString 并赋值

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict];

       通过对照两个样例能够看出。方式一比較easy处理复杂的格式。可是属性设置比較繁多复杂，而方式二的属性设置比較简单明了，却不善于处理复杂多样的格式控制，可是不善于并不等于不能。能够通过属性字符串分段的方式来达到方式一的效果。例如以下：

//方式二的分段处理

//第一段

NSDictionary *attrDict1 = @{ NSFontAttributeName: [UIFont fontWithName: @"Zapfino" size: 15],

                             NSForegroundColorAttributeName: [UIColor blueColor] };

NSAttributedString *attrStr1 = [[NSAttributedString alloc] initWithString: [originStr substringWithRange: NSMakeRange(0, 4)] attributes: attrDict1];

//第二段

NSDictionary *attrDict2 = @{ NSFontAttributeName: [UIFont fontWithName: @"Zapfino" size: 15],

                             NSForegroundColorAttributeName: [UIColor redColor] };

NSAttributedString *attrStr2 = [[NSAttributedString alloc] initWithString: [originStr substringWithRange: NSMakeRange(4, 3)] attributes: attrDict2];

//第三段

NSDictionary *attrDict3 = @{ NSFontAttributeName: [UIFont fontWithName: @"Zapfino" size: 15],

                             NSForegroundColorAttributeName: [UIColor blackColor] };

NSAttributedString *attrStr3 = [[NSAttributedString alloc] initWithString: [originStr substringWithRange:

                                                                            NSMakeRange(7, originStr.length - 4 - 3)] attributes: attrDict3];

//合并

NSMutableAttributedString *attributedStr03 = [[NSMutableAttributedString alloc] initWithAttributedString: attrStr1];

[attributedStr03 appendAttributedString: attrStr2];

[attributedStr03 appendAttributedString: attrStr3];

_label03.attributedText = attributedStr03;

@AttributedString到底能够设置哪些属性，详细来说。有以下21个：

// NSFontAttributeName                设置字体属性，默认值：字体：Helvetica(Neue) 字号：12

// NSForegroundColorAttributeNam      设置字体颜色，取值为 UIColor对象，默认值为黑色

// NSBackgroundColorAttributeName     设置字体所在区域背景颜色。取值为 UIColor对象，默认值为nil, 透明色

// NSLigatureAttributeName            设置连体属性，取值为NSNumber 对象(整数)。0 表示没有连体字符，1 表示使用默认的连体字符

// NSKernAttributeName                设定字符间距，取值为 NSNumber 对象（整数）。正值间距加宽，负值间距变窄

// NSStrikethroughStyleAttributeName  设置删除线，取值为 NSNumber 对象（整数）

// NSStrikethroughColorAttributeName  设置删除线颜色。取值为 UIColor 对象，默认值为黑色

// NSUnderlineStyleAttributeName      设置下划线，取值为 NSNumber 对象（整数）。枚举常量 NSUnderlineStyle中的值，与删除线相似

// NSUnderlineColorAttributeName      设置下划线颜色，取值为 UIColor 对象，默认值为黑色

// NSStrokeWidthAttributeName         设置笔画宽度，取值为 NSNumber 对象（整数）。负值填充效果，正值中空效果

// NSStrokeColorAttributeName         填充部分颜色。不是字体颜色，取值为 UIColor 对象

// NSShadowAttributeName              设置阴影属性，取值为 NSShadow 对象

// NSTextEffectAttributeName          设置文本特殊效果，取值为 NSString 对象，眼下仅仅有图版印刷效果可用：

// NSBaselineOffsetAttributeName      设置基线偏移值，取值为 NSNumber （float）,正值上偏。负值下偏

// NSObliquenessAttributeName         设置字形倾斜度，取值为 NSNumber （float）,正值右倾。负值左倾

// NSExpansionAttributeName           设置文本横向拉伸属性，取值为 NSNumber （float）,正值横向拉伸文本，负值横向压缩文本

// NSWritingDirectionAttributeName    设置文字书写方向，从左向右书写或者从右向左书写

// NSVerticalGlyphFormAttributeName   设置文字排版方向，取值为 NSNumber 对象(整数)，0 表示横排文本，1 表示竖排文本

// NSLinkAttributeName                设置链接属性，点击后调用浏览器打开指定URL地址

// NSAttachmentAttributeName          设置文本附件,取值为NSTextAttachment对象,经常使用于文字图片混排

// NSParagraphStyleAttributeName      设置文本段落排版格式，取值为 NSParagraphStyle 对象　

以下就一一举例说明：

1. NSFontAttributeName

//NSForegroundColorAttributeName 设置字体颜色，取值为 UIColor，默觉得黑色

NSDictionary *attrDict1 = @{ NSForegroundColorAttributeName: [UIColor redColor] };

NSDictionary *attrDict2 = @{ NSForegroundColorAttributeName: [UIColor blueColor] };

NSDictionary *attrDict3 = @{ NSForegroundColorAttributeName: [UIColor orangeColor] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

注意：

       NSForegroundColorAttributeName设置的颜色与UILabel的textColor属性设置的颜色在地位上是相等的。谁最后赋值。终于显示的就是谁的颜色。

2. NSBackgroundColorAttributeName

//NSForegroundColorAttributeName 设置字体颜色。取值为 UIColor。默觉得黑色

NSDictionary *attrDict1 = @{ NSForegroundColorAttributeName: [UIColor redColor] };

NSDictionary *attrDict2 = @{ NSForegroundColorAttributeName: [UIColor blueColor] };

NSDictionary *attrDict3 = @{ NSForegroundColorAttributeName: [UIColor orangeColor] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

//NSBackgroundColorAttributeName 设置字体所在区域背景的颜色，取值为UIColor。默认值为nil

NSDictionary *attrDict4 = @{ NSBackgroundColorAttributeName: [UIColor orangeColor] };

NSDictionary *attrDict5 = @{ NSBackgroundColorAttributeName: [UIColor redColor] };

NSDictionary *attrDict6 = @{ NSBackgroundColorAttributeName: [UIColor cyanColor] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict4];

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict5];

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict6];

       细致观察会发现个问题。我并没有关闭 NSForegroundColorAttributeName 属性，可是在执行结果中，全部字体的颜色都变成了默认色——黑色。这说明 NSForegroundColorAttributeName 和 NSBackgroundColorAttributeName 的低位是相等的，跟前面介绍的 textColor 一样。哪个属性最后一次赋值。就会冲掉前面的效果，若是我们把属性代码顺序交换一下

//NSBackgroundColorAttributeName 设置字体所在区域背景的颜色，取值为UIColor。默认值为nil

NSDictionary *attrDict4 = @{ NSBackgroundColorAttributeName: [UIColor orangeColor] };

NSDictionary *attrDict5 = @{ NSBackgroundColorAttributeName: [UIColor redColor] };

NSDictionary *attrDict6 = @{ NSBackgroundColorAttributeName: [UIColor cyanColor] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict4];

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict5];

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict6];

//NSForegroundColorAttributeName 设置字体颜色，取值为 UIColor，默觉得黑色

NSDictionary *attrDict1 = @{ NSForegroundColorAttributeName: [UIColor redColor] };

NSDictionary *attrDict2 = @{ NSForegroundColorAttributeName: [UIColor blueColor] };

NSDictionary *attrDict3 = @{ NSForegroundColorAttributeName: [UIColor orangeColor] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

可是textColor属性能够与 NSBackgroundColorAttributeName 属性叠加

_label01.textColor = [UIColor greenColor];

_label02.textColor = [UIColor yellowColor];

_label03.textColor = [UIColor blueColor];

//NSForegroundColorAttributeName 设置字体颜色，取值为 UIColor，默觉得黑色

NSDictionary *attrDict1 = @{ NSForegroundColorAttributeName: [UIColor redColor] };

NSDictionary *attrDict2 = @{ NSForegroundColorAttributeName: [UIColor blueColor] };

NSDictionary *attrDict3 = @{ NSForegroundColorAttributeName: [UIColor orangeColor] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

//NSBackgroundColorAttributeName 设置字体所在区域背景的颜色，取值为UIColor。默认值为nil

NSDictionary *attrDict4 = @{ NSBackgroundColorAttributeName: [UIColor orangeColor] };

NSDictionary *attrDict5 = @{ NSBackgroundColorAttributeName: [UIColor redColor] };

NSDictionary *attrDict6 = @{ NSBackgroundColorAttributeName: [UIColor cyanColor] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict4];

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict5];

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict6];

       尽管 textColor 在 NSFontAttributeName 之前赋值，可是因为 NSFontAttributeName 的属性效果被NSBackgroundColorAttributeName 属性冲掉了。所以终于显示了 textColor 的颜色。

3. NSLigatureAttributeName

//NSLigatureAttributeName 设置连体属性，取值为NSNumber 对象(整数)。0 表示没有连体字符。1 表示使用默认的连体字符，

//                        2 表示使用全部连体符号，默认值为 1（iOS 不支持 2）

NSString *ligatureStr = @"flush";

NSDictionary *attrDict1 = @{ NSLigatureAttributeName: [NSNumber numberWithInt: 0],

                             NSFontAttributeName: [UIFont fontWithName: @"futura" size: 30] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: ligatureStr attributes: attrDict1];

NSDictionary *attrDict2 = @{ NSLigatureAttributeName: @(1),

                             NSFontAttributeName: [UIFont fontWithName: @"futura" size: 30]

                             };

_label02.attributedText = [[NSAttributedString alloc] initWithString: ligatureStr attributes: attrDict2];

       因为要展示连体字符。所以将前面使用的带有中文的字符串换成 flush

       NSLigatureAttributeName的取值为NSNumber对象，所以不能直接将一个整数值赋给它，创建 NSNumber 对象的方法有非常多，或者能够简写成 @(int)

       注意观察字母f和l之间的变化。

       感觉连写就是一个艺术字功能，当字符f和l组合使用组合符号（所谓的字形(glyph)）绘制时，看起来确实更加美观。可是并不是全部的字符之间都有组合符号。其实，仅仅有某些字体中得某些字符的组合（如字符f和l。字符f和i等）才具有美观的组合符号。

4. NSKernAttributeName

//NSKernAttributeName 设定字符间距，取值为 NSNumber 对象（整数），正值间距加宽。负值间距变窄

  NSDictionary *attrDict1 = @{ NSKernAttributeName: @(-3),

                               NSFontAttributeName: [UIFont systemFontOfSize: 20]

                               };

  _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

  NSDictionary *attrDict2 = @{ NSKernAttributeName: @(0),

                               NSFontAttributeName: [UIFont systemFontOfSize: 20]

                               };

  _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

  NSDictionary *attrDict3 = @{ NSKernAttributeName: @(10),

                               NSFontAttributeName: [UIFont systemFontOfSize: 20]

                               };

  _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

5. NSStrikethroughStyleAttributeName

//NSStrikethroughStyleAttributeName 设置删除线。取值为 NSNumber 对象（整数）。枚举常量 NSUnderlineStyle中的值

// NSUnderlineStyleNone   不设置删除线

// NSUnderlineStyleSingle 设置删除线为细单实线

// NSUnderlineStyleThick  设置删除线为粗单实线

// NSUnderlineStyleDouble 设置删除线为细双实线

NSDictionary *attrDict1 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleSingle),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

NSDictionary *attrDict2 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleThick),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

NSDictionary *attrDict3 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleDouble),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

注意：

       尽管使用了枚举常量，可是枚举常量的本质仍为整数。所以相同必须先转化为 NSNumber 才干使用

       删除线和下划线使用相同的枚举常量作为其属性值

       眼下iOS中仅仅有上面列出的4中效果，尽管我们能够在头文件里发现其它很多其它的取值。可是使用后没有不论什么效果

能够看出，中文和英文删除线的位置有所不同

       另外。删除线属性取值除了上面的4种外，其实还能够取其它整数值，有兴趣的能够自行试验，取值为 0 - 7时，效果为单实线，随着值得添加，单实线逐渐变粗。取值为 9 - 15时。效果为双实线。取值越大，双实线越粗。

NSDictionary *attrDict1 = @{ NSStrikethroughStyleAttributeName: @(1),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

NSDictionary *attrDict2 = @{ NSStrikethroughStyleAttributeName: @(3),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

NSDictionary *attrDict3 = @{ NSStrikethroughStyleAttributeName: @(7),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

6. NSStrikethroughColorAttributeName

//NSStrikethroughColorAttributeName 设置删除线颜色，取值为 UIColor 对象，默认值为黑色

  NSDictionary *attrDict1 = @{ NSStrikethroughColorAttributeName: [UIColor blueColor],

                               NSStrikethroughStyleAttributeName: @(1),

                               NSFontAttributeName: [UIFont systemFontOfSize:20] };

  _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

  NSDictionary *attrDict2 = @{ NSStrikethroughColorAttributeName: [UIColor orangeColor],

                               NSStrikethroughStyleAttributeName: @(3),

                               NSFontAttributeName: [UIFont systemFontOfSize:20] };

  _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

  NSDictionary *attrDict3 = @{ NSStrikethroughColorAttributeName: [UIColor greenColor],

                               NSStrikethroughStyleAttributeName: @(7),

                               NSFontAttributeName: [UIFont systemFontOfSize:20] };

  _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

7. NSUnderlineStyleAttributeName

    下划线除了线条位置和删除线不同外，其它的都能够全然參照删除线设置。

//NSUnderlineStyleAttributeName 设置下划线，取值为 NSNumber 对象（整数）。枚举常量 NSUnderlineStyle中的值，与删除线相似

NSDictionary *attrDict1 = @{ NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

NSDictionary *attrDict2 = @{ NSUnderlineStyleAttributeName: @(NSUnderlineStyleThick),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

NSDictionary *attrDict3 = @{ NSUnderlineStyleAttributeName: @(NSUnderlineStyleDouble),

                             NSFontAttributeName: [UIFont systemFontOfSize:20] };

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

8. NSUnderlineColorAttributeName

    能够全然參照下划线颜色设置

//NSUnderlineColorAttributeName 设置下划线颜色，取值为 UIColor 对象。默认值为黑色

   NSDictionary *attrDict1 = @{ NSUnderlineColorAttributeName: [UIColor blueColor],

                                NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle),

                                NSFontAttributeName: [UIFont systemFontOfSize:20] };

   _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

   NSDictionary *attrDict2 = @{ NSUnderlineColorAttributeName: [UIColor orangeColor],

                                NSUnderlineStyleAttributeName: @(NSUnderlineStyleThick),

                                NSFontAttributeName: [UIFont systemFontOfSize:20] };

   _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

   NSDictionary *attrDict3 = @{ NSUnderlineColorAttributeName: [UIColor greenColor],

                                NSUnderlineStyleAttributeName: @(NSUnderlineStyleDouble),

                                NSFontAttributeName: [UIFont systemFontOfSize:20] };

   _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

9. NSStrokeWidthAttributeName

//NSStrokeWidthAttributeName 设置笔画宽度，取值为 NSNumber 对象（整数）。负值填充效果，正值中空效果

  NSDictionary *attrDict1 = @{ NSStrokeWidthAttributeName: @(-3),

                               NSFontAttributeName: [UIFont systemFontOfSize:30] };

  _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

  NSDictionary *attrDict2 = @{ NSStrokeWidthAttributeName: @(0),

                               NSFontAttributeName: [UIFont systemFontOfSize:30] };

  _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

  NSDictionary *attrDict3 = @{ NSStrokeWidthAttributeName: @(3),

                               NSFontAttributeName: [UIFont systemFontOfSize:30] };

  _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

10. NSStrokeColorAttributeName

//NSStrokeColorAttributeName 填充部分颜色，不是字体颜色，取值为 UIColor 对象

   NSDictionary *attrDict1 = @{ NSStrokeWidthAttributeName: @(-3),

                                NSStrokeColorAttributeName: [UIColor orangeColor],

                                NSFontAttributeName: [UIFont systemFontOfSize:30] };

   _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

   NSDictionary *attrDict2 = @{ NSStrokeWidthAttributeName: @(0),

                                NSStrokeColorAttributeName: [UIColor blueColor],

                                NSFontAttributeName: [UIFont systemFontOfSize:30] };

   _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

   NSDictionary *attrDict3 = @{ NSStrokeWidthAttributeName: @(3),

                                NSStrokeColorAttributeName: [UIColor greenColor],

                                NSFontAttributeName: [UIFont systemFontOfSize:30] };

   _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

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