iOS 实现图文混排

 NSMutableAttributedString *str=[[NSMutableAttributedStringalloc] initWithString:@"设置文字"attributes:nil];

      NSTextAttachment *attachment=[[NSTextAttachmentalloc] initWithData:nilofType:nil];

    UIImage *img=[UIImageimageNamed:@"图片.png"];

    attachment.image=img;

    attachment.bounds=CGRectMake(0,0,20, 20);

    NSAttributedString *text=[NSAttributedStringattributedStringWithAttachment:attachment];

      [str insertAttributedString:textatIndex:2];

    self.textView.attributedText=str;