android使用ForegroundColorSpan，ForegroundColorSpan动态设置字体颜色和大小

String origiDesc = "离店之后点评能够获得￥32元返现；若使用手机APP发表点评则能获得￥64元返现";
				
				SpannableStringBuilder style = new SpannableStringBuilder(origiDesc);
                                //设置"￥32"的字体大小为1.2倍
				style.setSpan(new RelativeSizeSpan(1.2f),
						origiDesc.indexOf("￥32"),
                                                origiDesc.indexOf("￥32") + String.valueOf("￥32").length(), Spannable.SPAN_EXCLUSIVE_INCLUSIVE);

				//设置"￥32"的字体颜色为R.color.txt_orange
				style.setSpan(new ForegroundColorSpan(mContext.getResources().getColor(R.color.txt_orange)),
						origiDesc.indexOf("￥32"), 
						origiDesc.indexOf("￥32") + String.valueOf("￥32").length(), Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
				
		

 还可以设置超链接等等