UITextView+Extension.h

#import 
     
      @interface UITextView (Extension)/** 插入属性文本 */- (NSMutableAttributedString *)insertAttributeText:(NSAttributedString *)insertAttrText;/** 插入属性文本和要设置的block内容 */- (NSMutableAttributedString *)insertAttributeText:(NSAttributedString *)insertAttrText settingsBlock:(void (^)(NSMutableAttributedString * attributedString)) settingsBlock;@end
     

UITextView+Extension.m

#import "UITextView+Extension.h"@implementation UITextView (Extension)- (NSMutableAttributedString *)insertAttributeText:(NSAttributedString *)insertAttrText {    return [self insertAttributeText:insertAttrText settingsBlock:nil];    }- (NSMutableAttributedString *)insertAttributeText:(NSAttributedString *)insertAttrText settingsBlock:(void (^)(NSMutableAttributedString *))settingsBlock {        // 以textView的原本内容为基础构造一个attrStr    NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc] initWithAttributedString:self.attributedText];        // 将附件文本插入到光标所在的位置    NSUInteger cursorLocation = self.selectedRange.location;    [attrStr insertAttributedString:insertAttrText atIndex:cursorLocation];        // 如果传入了block,就调用block    if(settingsBlock) {        settingsBlock(attrStr);    }        // 更新当前textView内容    self.attributedText = attrStr;        // 修正当前光标位置(将光标移动到插入表情末尾,默认光标会跳转到所有文本最后)    self.selectedRange = NSMakeRange(cursorLocation + 1, 0);        return attrStr;}@end

DJEmotionTextView.m

#import "DJEmotionTextView.h"#import "DJEmotion.h"@implementation DJEmotionTextView- (void)insertEmotion:(DJEmotion *)emotion {    // 插入表情    if (emotion.code) { // Emoji表情        [self insertText:[NSString emojiWithStringCode:emotion.code]];    } else if (emotion.png) { // 表情图片        NSString *emotionName = emotion.png;        NSString *imagePath;        if ([emotionName hasPrefix:@"d_"] || [emotionName hasPrefix:@"f_"] ||            [emotionName hasPrefix:@"h_"] || [emotionName hasPrefix:@"l_"] || [emotionName hasPrefix:@"o_"] || [emotionName hasPrefix:@"w_"]) {            imagePath = [NSString stringWithFormat:@"EmotionIcons/default/%@",emotion.png]; // 默认表情路径        } else if ([emotionName hasPrefix:@"lxh_"]) {            imagePath = [NSString stringWithFormat:@"EmotionIcons/lxh/%@",emotion.png]; // 浪小花表情路径        }                        // 构造表情附件        NSTextAttachment *attachment = [[NSTextAttachment alloc] init];        attachment.image = [UIImage imageNamed:imagePath];        CGFloat attachmentWH = self.font.lineHeight;        attachment.bounds = CGRectMake(0, -4, attachmentWH, attachmentWH);        NSAttributedString *attachStr = [NSAttributedString attributedStringWithAttachment:attachment];                // 插入属性文本        [self insertAttributeText:attachStr settingsBlock:^(NSMutableAttributedString *attributedString) {                        // 设置当前attrStr的字体与textView原有字体大小一致,因为attrStr的字体无法通过textview.font属性来设置            [attributedString addAttribute:NSFontAttributeName value:self.font range:NSMakeRange(0, attributedString.length)];        }];    }}@end