arg0:<string name="red_number">数量 %1$s</string>

</pre><pre name="code" class="java" style="background-color: rgb(255, 255, 255); ">arg1: "123456"

<span style="background-color: rgb(255, 255, 255); ">显示效果：数量</span><span style="background-color: rgb(255, 102, 102);">123456</span>

</pre><pre name="code" class="java">

/**
	 * 
	 * @param context
	 * @param arg0 字符串   
	 * @param arg1 数字  
	 * @return
	 */
	public SpannableStringBuilder setRed(Context context, int arg0, String arg1) {
		String text = String.format(context.getResources().getString(arg0),
				arg1);
		int index[] = new int[1];
		index[0] = text.indexOf(arg1);
//		index[1] = text.indexOf("18");
//		index[2] = text.indexOf("银宝箱");

		SpannableStringBuilder style = new SpannableStringBuilder(text);
		style.setSpan(new ForegroundColorSpan(Color.RED), index[0],
				index[0] + arg1.length(), Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
//		style.setSpan(new ForegroundColorSpan(Color.RED), index[1],
//				index[1] + 2, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
//		style.setSpan(new BackgroundColorSpan(Color.RED), index[2],
//				index[2] + 3, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
		return style;

	}

android 字符串 部分变色。。