iOS中的图文混排
废话不多说,直接上图:
图文混排实现代码:
// 初始化可插入图片的字符串
NSMutableAttributedString *attributeStr = [[NSMutableAttributedString alloc] init];
// 拼接之前的字符(否则会覆盖掉前面输入的字符)
[attributeStr appendAttributedString:self.attributedText];
// 加载图片,EmotionAttachment是我自定义的类,继承自NSTextAttachment.
EmotionAttachment *attach = [[EmotionAttachment alloc] init];
attach.emotion = emotion;
CGFloat imageHY = self.font.lineHeight;
// 设置图片居中
attach.bounds = CGRectMake(0, -4, imageHY, imageHY);
NSAttributedString *imageStr = [NSAttributedString attributedStringWithAttachment:attach];
// 获取光标位置
NSUInteger loc = self.selectedRange.location;
//[attributeStr appendAttributedString:imageStr];
// 插入图片到光标所在位置
[attributeStr insertAttributedString:imageStr atIndex:loc];
[attributeStr addAttribute:NSFontAttributeName value:self.font range:NSMakeRange(0,attributeStr.length)];
self.attributedText = attributeStr;
// 移动光标到插入的图片后面
self.selectedRange = NSMakeRange(loc + 1, 0);