第一版耍鬓，以實(shí)現(xiàn)功能為主流妻，相比較簡(jiǎn)陋一點(diǎn)，多多包含,先上效果圖

9918146F-3D83-40BA-80EB-359D06594273.png

1.先修改鍵盤上的工具欄

self.contentView.inputAccessoryView = [self createInputAccessoryView];
//鍵盤上的工具欄
- (UIView *)createInputAccessoryView {
    // 相機(jī)
    UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"edit_pic"] style:UIBarButtonItemStylePlain target:self action:@selector(item1Action)];
    //收起鍵盤
    UIBarButtonItem *th1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(cancleClick)];
    //兩個(gè)item之間的間距
    UIBarButtonItem *th2 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    th1.tintColor = [UIColor blackColor];
    
    UIToolbar *tool = [UIToolbar new];
    [tool sizeToFit];
    [tool setItems:@[item1,th2,th1]];
    return tool;
}

2.相機(jī)的點(diǎn)擊事件涣达，也就是圖片上傳服務(wù)器的方法

//工具欄的點(diǎn)擊事件
- (void)item1Action {

首先將圖片上傳到你們的服務(wù)器（這里需要圖片和url）
 
NSTextAttachment* textAttachment = [[NSTextAttachment alloc] init];
//userInfo這個(gè)屬性需要寫延展证薇，在下面
textAttachment.userInfo = 圖片的URL;
//照片賦值
textAttachment.image = image;
//設(shè)置圖片的大小
textAttachment.bounds = CGRectMake(0, 0, myWidth/2, myWidth/2);
//類型轉(zhuǎn)換
NSAttributedString* imageAttachment = [NSAttributedString attributedStringWithAttachment:textAttachment];
NSMutableAttributedString *attriStr = [self.contentView.attributedText mutableCopy];
//獲取光標(biāo)的位置
NSRange range = self.contentView.selectedRange;
//插入
[attriStr insertAttributedString:imageAttachment atIndex:range.location];
//拼接
//[attriStr appendAttributedString:imageAttachment];
self.contentView.attributedText = attriStr; 

}

3.上傳服務(wù)器的相關(guān)操作

正常來(lái)說(shuō)，直接富文本文字轉(zhuǎn)換成HTML格式的字符串上傳服務(wù)器就可以了浑度。如果沒(méi)有特殊要求，
上傳字符串到服務(wù)器就告一段落了箩张。

我們這后臺(tái)特殊要求完残，需要轉(zhuǎn)換成字符串横漏，然后圖片鏈接拼接到相對(duì)應(yīng)的位置（可以選擇性忽略）
NSString *textStr = [[self textStringWithSymbol:@"[圖片]" attributeString:self.contentView.attributedText] mutableCopy];
    int index = 0;
    //通過(guò)替換
    if (textStr.length > 3) {
        for (int i = 0; i <= textStr.length - 4; i ++) {
            NSString *tempStr = [textStr substringWithRange:NSMakeRange(i, 4)];
            if ([tempStr isEqualToString:@"[圖片]"]) {
                NSString *imgStr = [NSString stringWithFormat:@"<p><img src=\"%@\"></p>",self.imgArray[index]];
                textStr = [textStr stringByReplacingCharactersInRange:NSMakeRange(i, 4) withString:imgStr];
                index ++;
            }
        }
    }

執(zhí)行上傳服務(wù)器的操作熟掂。

textStr 就是最終上傳上傳服務(wù)器的文本。

下面的方法是將富文本轉(zhuǎn)換成純文本的信息

/** 將富文本轉(zhuǎn)換為帶有圖片標(biāo)志的純文本*/
- (NSString *)textStringWithSymbol:(NSString *)symbol attributeString:(NSAttributedString *)attributeString{
    NSString *string = attributeString.string;
    //調(diào)用的方法在下面
    string = [self stringDeleteString:@"\n" frontString:@"[圖片]" inString:string];
    //最終純文本
    NSMutableString *textString = [NSMutableString stringWithString:string];
    //替換下標(biāo)的偏移量
    __block NSUInteger base = 0;
    
    //遍歷
    [attributeString enumerateAttribute:NSAttachmentAttributeName inRange:NSMakeRange(0, attributeString.length)
                                options:0
                             usingBlock:^(id value, NSRange range, BOOL *stop) {
                                 //檢查類型是否是自定義NSTextAttachment類
                                 if (value && [value isKindOfClass:[NSTextAttachment class]]) {
                                     //替換
                                     [textString replaceCharactersInRange:NSMakeRange(range.location + base, range.length) withString:symbol];
                                     //增加偏移量
                                     base += (symbol.length - 1);
                                     //將富文本中最終確認(rèn)的照片取出來(lái)
                                     NSTextAttachment *attachmentImg = (NSTextAttachment *)value;
                                    //將圖片存入數(shù)組素跺，后面需要用到
                                     [self.imgArray addObject:attachmentImg.userInfo];
                                 }
                             }];
    
    return textString;
}
/** 刪除字符串*/
- (NSString *)stringDeleteString:(NSString *)deleteString frontString:(NSString *)frontString inString:(NSString *)inString{
    NSArray *ranges = [self rangeOfSymbolString:frontString inString:inString];
    NSMutableString *mutableString = [inString mutableCopy];
    NSUInteger base = 0;
    for (NSString *rangeString in ranges) {
        NSRange range = NSRangeFromString(rangeString);
        [mutableString deleteCharactersInRange:NSMakeRange(range.location - deleteString.length + base, deleteString.length)];
        base -= deleteString.length;
    }
    return [mutableString copy];
}
/** 統(tǒng)計(jì)文本中所有圖片資源標(biāo)志的range*/
- (NSArray *)rangeOfSymbolString:(NSString *)symbol inString:(NSString *)string {
    NSMutableArray *rangeArray = [NSMutableArray array];
    NSString *string1 = [string stringByAppendingString:symbol];
    NSString *temp;
    for (int i = 0; i < string.length; i ++) {
        temp = [string1 substringWithRange:NSMakeRange(i, symbol.length)];
        if ([temp isEqualToString:symbol]) {
            NSRange range = {i, symbol.length};
            [rangeArray addObject:NSStringFromRange(range)];
        }
    }
    return rangeArray;
}

以上是轉(zhuǎn)換成純文本指厌，然后拼接上url操作，可以選擇性忽略踩验。
4.NSTextAttachment 延展，為NSTextAttachment添加一個(gè)屬性（關(guān)鍵操作）

.h文件
#import <UIKit/UIKit.h>
@interface NSTextAttachment (LMText)
//添加一個(gè)屬性
@property (nonatomic, strong) id userInfo;

@end

//.m文件
#import "NSTextAttachment+LMText.h"
#import <objc/runtime.h>
@implementation NSTextAttachment (LMText)
static void * keyOfUserInfo = &keyOfUserInfo;
//實(shí)現(xiàn)它的set箕憾，get方法
- (id)userInfo {
    return objc_getAssociatedObject(self, keyOfUserInfo);
}

- (void)setUserInfo:(id)userInfo {
    objc_setAssociatedObject(self, keyOfUserInfo, userInfo, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

@end