有的时候，仅仅是价格要求，前面的符号小一点，后面的数字大一点，就没必要用SpannableString。用HTML简单处理即可
效果图：
代码实现：
//加粗：<strong>222</strong>也可以tv_1 = (TextView) findViewById(R.id.tv_1);tv_2 = (TextView) findViewById(R.id.tv_2);Spanned spanned_1 = Html.fromHtml("哈哈<font color= '#DD454C'>" + "<small>￥</small>" + "<big>" + 123 + "</big></font> 哈哈(哈哈都是默认的20sp大小，以作参考)");tv_1.setText(spanned_1);String s = "测试<U>大写下划线</U>、<u>小写下划线</u>、<I>大写斜体字</I>、<i>小写斜体字</i>、<B>大写加粗</B>、<b>小写加粗</b>、<font color='red'>红色字</font>的格式";Spanned spanned_2 = Html.fromHtml(s);tv_2.setText(spanned_2);
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附：SpannableString
代码实现：
textview = (TextView) findViewById(R.id.textview);String content = "012345678901234567890123456789";SpannableString spannableString = new SpannableString(content);/*** 设置字体样式* Typeface.BOLD_ITALIC:粗体+斜体* Typeface.BOLD:粗体* Typeface.ITALIC:斜体* Typeface.NORMAL:普通*/spannableString.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 3, 6,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);//删除线（中划线）spannableString.setSpan(new StrikethroughSpan(), 8, 10, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);//下划线spannableString.setSpan(new UnderlineSpan(), 15, 20, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);textview.setText(spannableString);
