Edtext文字大小

 String text = "示例 精通汽车工作原理以及各种故障排查和解决，有较强的... （最多输入150个字）";
        int start = text.indexOf(',');
        int end = text.length();
        SpannableString textSpan = new SpannableString (text);
        textSpan.setSpan(new AbsoluteSizeSpan(50),0,start, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        textSpan.setSpan(new AbsoluteSizeSpan(32),start,end,Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        ed_introduce.setText(textSpan);