ios Label文字中添加图片

 NSTextAttachment *attach = [[NSTextAttachment alloc] init];
   attach.image = [UIImage imageNamed:@"Rectangle"];
        attach.bounds = CGRectMake(0, -1, 26, 13);
        [attStr insertAttributedString:[NSAttributedString attributedStringWithAttachment:attach] atIndex:0];
    self.titleLabel.attributedText = attStr;