[复制] iOS 富文本实现图文混排

示例代码

1、初始化可变属性字符串

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:textString];

2、设置全局字体属性(设置字体大小为14)

[attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:14] range:NSMakeRange(0, textString.length)];
[attributedString addAttribute:NSKernAttributeName value:@1 range:NSMakeRange(0, textString.length)];

//或者
[attributedString addAttributes:@{
  NSFontAttributeName: [UIFont systemFontOfSize:14],
  NSKernAttributeName: @1
} range:NSMakeRange(0, textString.length)];

3、修改标题文字属性

[attributedString addAttributes:@{
  NSFontAttributeName: [UIFont systemFontOfSize:26],
  NSForegroundColorAttributeName: [UIColor blueColor]
} range:[textString rangeOfString:@"文本内容"]];

4、获取一大段文字范围并修改属性

// 此方法可以通过string获得范围进行修改 
NSRange startRange = [textString localizedStandardRangeOfString:@"我们即将采取以下措施："]; 
NSRange endRange = [textString localizedStandardRangeOfString:@"感谢您的一路相伴。"]; 
[attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSUnionRange(startRange, endRange)];

5、为文本添加下划线

// 设置文本下划线 
NSRange startRange1 = [textString localizedStandardRangeOfString:@"因此，"]; 
NSRange endRange1 = [textString localizedStandardRangeOfString:@"之后转型企业云服务。"]; 
[attributedString addAttribute:NSUnderlineStyleAttributeName value:@1 range:NSUnionRange(startRange1, endRange1)];

6、为文本内文字添加描边

// 设置文本的描边 
[attributedString addAttribute:NSStrokeWidthAttributeName value:@2.0 range:[textString rangeOfString:@"存储传播非法文件、侵权盗版牟利、传播淫秽色情信息等违法犯罪行为"]]; 
[attributedString addAttribute:NSStrokeColorAttributeName value:[UIColor brownColor] range:[textString rangeOfString:@"存储传播非法文件、侵权盗版牟利、传播淫秽色情信息等违法犯罪行为"]]; 
[attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:17] range:[textString rangeOfString:@"存储传播非法文件、侵权盗版牟利、传播淫秽色情信息等违法犯罪行为"]];

7、为文本添加图片附件

// 插入图片附件 
NSTextAttachment *imageAtta = [[NSTextAttachment alloc] init]; 
imageAtta.bounds = CGRectMake(0, 0, 20, 20); 
imageAtta.image = [UIImage imageNamed:@"imgName"]; 
NSAttributedString *attach = [NSAttributedString attributedStringWithAttachment:imageAtta]; 
[attributedString insertAttributedString:attach atIndex: textString.length];

8、为文本设置段落属性

// 段落样式 
NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc]init]; // 行间距 
[style setLineSpacing:3]; 
// 段落间距 
[style setParagraphSpacing:6]; 
// 首行缩进 
[style setFirstLineHeadIndent:25]; 
[attributedString addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(1, textString.length)];

9、添加网址链接

// 网址链接 
NSRange urlRange = [textString rangeOfString:@"yunpan.360.cn"]; 
[attributedString addAttribute:NSLinkAttributeName value:[NSURL URLWithString:@"[http://yunpan.360.cn](http://yunpan.360.cn/)"] range:NSMakeRange(urlRange.location, 14)]; 
[attributedString addAttribute:NSBackgroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(urlRange.location, 14)];

10、通过UITextViewDelegate代理方法,监听URL和附件的点击

#pragma mark ----------UITextViewDelegate---------- 
- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange interaction:(UITextItemInteraction)interaction { 
  NSLog(@"%@",URL); return YES; 
} 

- (BOOL)textView:(UITextView *)textView shouldInteractWithTextAttachment:(NSTextAttachment *)textAttachment inRange:(NSRange)characterRange interaction:(UITextItemInteraction)interaction { 
  NSLog(@"%@",textAttachment.image); return YES; 
}

补充：常用属性字符串属性

// 字体 
NSFontAttributeName 
// UIFont, default Helvetica(Neue) 12 

// 段落 
NSParagraphStyleAttributeName 
// NSParagraphStyle, default defaultParagraphStyle 

// 文字颜色 
NSForegroundColorAttributeName 
// UIColor, default blackColor 

// 背景颜色 
NSBackgroundColorAttributeName 
// UIColor, default nil: no background 

// 描边颜色 
NSStrokeColorAttributeName 
// UIColor, default nil: same as foreground color 

// 描边宽度 
NSStrokeWidthAttributeName 
// NSNumber containing floating point value, default 0 

// 阴影 
NSShadowAttributeName 
// NSShadow, default nil: no shadow 

// 附件 
NSAttachmentAttributeName 
// NSTextAttachment, default nil 

// 链接URL 
NSLinkAttributeName 
// NSURL (preferred) or NSString 

// 基线偏移量 
NSBaselineOffsetAttributeName 
// NSNumber containing floating point value,default 0 

// 下划线 
NSUnderlineColorAttributeName 
// UIColor, default nil: same as foreground color