摘要：
比方图片的高度不想每一个都要设置一边。你能够写一个继承。////myTextAttachment.h//11////Createdby郝高明on15/6/8.//Copyright2015年郝高明.Allrightsreserved.//#import@interfacemyTextAttachment:NSTextAttachment@end////myTextAttachment.m//11////Createdby郝高明on15/6/8.//Copyright2015年郝高明.Allrightsreserved.//#import"myTextAttachment.h"@implementationmyTextAttachment-attachmentBoundsForTextContainer:textContainerproposedLineFragment:lineFragglyphPosition:positioncharacterIndex:charIndex{returnCGRectMake;}@end然后呢，程序这样写：UILabel*lable=[[UILabelalloc]initWithFrame:CGRectMake];lable.textColor=[UIColorredColor];[self.viewaddSubview:lable];//富文本NSString*message=@"我是郝高明，绰号小胖。哈哈~";NSMutableAttributedString*str=[[NSMutableAttributedStringalloc]initWithString:messageattributes:@{NSFontAttributeName:[UIFontsystemFontOfSize:16]}];myTextAttachment*attachment=[[myTextAttachmentalloc]init];//NSTextAttachment*attachment=[[NSTextAttachmentalloc]initWithData:nilofType:nil];UIImage*image=[UIImageimageNamed:@"80.png"];attachment.image=image;//attachment.bounds=CGRectMake;NSAttributedString*text=[NSAttributedStringattributedStringWithAttachment:attachment];[strinsertAttributedString:textatIndex:5];lable.attributedText=str;4.制作富文本，可能你须要替换掉一段文字中得特殊字符，比方：NSString*message=@"我是郝高明[icon]，绰号小胖。哈哈~";把这段话的[icon]替换成一个图片。那么这个应该怎么做呢？我们就用到了这个函数-replaceCharactersInRange:rangewithAttributedString:attrString;这是一个替换函数。
1.制作富文本，第一种的就是将一段文字中不通的字显示不同的颜色，大小等。
UILabel *testLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 100, 320, 30)];
testLabel.textAlignment = NSTextAlignmentCenter;
NSMutableAttributedString *AttributedStr = [[NSMutableAttributedString alloc]initWithString:@"今天天气不错呀"];
[AttributedStr addAttribute:NSFontAttributeName
value:[UIFont systemFontOfSize:16.0]
range:NSMakeRange(2, 2)];
[AttributedStr addAttribute:NSForegroundColorAttributeName
value:[UIColor redColor]
range:NSMakeRange(2, 2)];
testLabel.attributedText = AttributedStr;
[self.view addSubview:testLabel];2.制作富文本，另外一种就是将图片和文字混排
UILabel *lable = [[UILabel alloc]initWithFrame:CGRectMake(0, 150, 300, 21)];
lable.textColor = [UIColor redColor];
[self.view addSubview:lable];
//富文本
NSString *message = @"我是郝高明，绰号小胖，哈哈~";
NSMutableAttributedString *str = [[NSMutableAttributedString alloc]initWithString:message attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:16]}];
NSTextAttachment *attachment = [[NSTextAttachment alloc]initWithData:nil ofType:nil];
UIImage *image = [UIImage imageNamed:@"80.png"];
attachment.image = image;
attachment.bounds = CGRectMake(0, 0, 20, 20);
NSAttributedString *text = [NSAttributedString attributedStringWithAttachment:attachment];
[str insertAttributedString:text atIndex:5];
lable.attributedText = str;3.制作富文本，你可能会有一些定制的需求。比方图片的高度不想每一个都要设置一边。你能够写一个继承。然后将
-(CGRect)attachmentBoundsForTextContainer:(NSTextContainer *)textContainer proposedLineFragment:(CGRect)lineFrag glyphPosition:(CGPoint)position characterIndex:(NSUInteger)charIndex重写。
// // myTextAttachment.h // 11 // // Created by 郝高明 on 15/6/8. // Copyright (c) 2015年 郝高明. All rights reserved. // #import <UIKit/UIKit.h> @interface myTextAttachment : NSTextAttachment @end
//
// myTextAttachment.m
// 11
//
// Created by 郝高明 on 15/6/8.
// Copyright (c) 2015年 郝高明. All rights reserved.
//
#import "myTextAttachment.h"
@implementation myTextAttachment
-(CGRect)attachmentBoundsForTextContainer:(NSTextContainer *)textContainer proposedLineFragment:(CGRect)lineFrag glyphPosition:(CGPoint)position characterIndex:(NSUInteger)charIndex
{
return CGRectMake( 0 , 0 , lineFrag.size.height , lineFrag.size.height);
}
@end然后呢，程序这样写：
UILabel *lable = [[UILabel alloc]initWithFrame:CGRectMake(0, 150, 300, 21)];
lable.textColor = [UIColor redColor];
[self.view addSubview:lable];
//富文本
NSString *message = @"我是郝高明，绰号小胖。哈哈~";
NSMutableAttributedString *str = [[NSMutableAttributedString alloc]initWithString:message attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:16]}];
myTextAttachment *attachment = [[myTextAttachment alloc]init];
// NSTextAttachment *attachment = [[NSTextAttachment alloc]initWithData:nil ofType:nil];
UIImage *image = [UIImage imageNamed:@"80.png"];
attachment.image = image;
// attachment.bounds = CGRectMake(0, 0, 20, 20);
NSAttributedString *text = [NSAttributedString attributedStringWithAttachment:attachment];
[str insertAttributedString:text atIndex:5];
lable.attributedText = str;
4.制作富文本，可能你须要替换掉一段文字中得特殊字符，比方：
NSString *message = @"我是郝高明[icon]，绰号小胖。哈哈~";把这段话的[icon]替换成一个图片。那么这个应该怎么做呢？我们就用到了这个函数
- (void)replaceCharactersInRange:(NSRange)range withAttributedString:(NSAttributedString *)attrString;这是一个替换函数。怎么用呢？
UILabel *lable = [[UILabel alloc]initWithFrame:CGRectMake(0, 150, 300, 21)];
lable.textColor = [UIColor redColor];
[self.view addSubview:lable];
//富文本
NSString *message = @"我是郝高明[icon]，绰号小胖，哈哈~";
NSMutableAttributedString *str = [[NSMutableAttributedString alloc]initWithString:message attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:16]}];
myTextAttachment *attachment = [[myTextAttachment alloc]init];
UIImage *image = [UIImage imageNamed:@"80.png"];
attachment.image = image;
NSAttributedString *text = [NSAttributedString attributedStringWithAttachment:attachment];
NSRange range = [[str string]rangeOfString:@"[icon]"];
[str replaceCharactersInRange:range withAttributedString:text];
lable.attributedText = str;
效果和上图的效果是一样的。 补充一点知识：
1.为某一范围内文字设置多个属性
- (void)setAttributes:(NSDictionary*)attrs range:(NSRange)range;
为某一范围内文字加入某个属性
- (void)addAttribute:(NSString*)name value:(id)value range:(NSRange)range;
为某一范围内文字加入多个属性
- (void)addAttributes:(NSDictionary*)attrs range:(NSRange)range;
移除某范围内的某个属性
- (void)removeAttribute:(NSString*)name range:(NSRange)range;
2.常见的属性及说明
NSFontAttributeName字体
NSParagraphStyleAttributeName段落格式
NSForegroundColorAttributeName字体颜色
NSBackgroundColorAttributeName背景颜色
NSStrikethroughStyleAttributeName删除线格式
NSUnderlineStyleAttributeName下划线格式
NSStrokeColorAttributeName删除线颜色
NSStrokeWidthAttributeName删除线宽度
NSShadowAttributeName阴影
很多其它方法和属性说明详见苹果官方说明文档：