<style name="approval_detail_info_style1">

        <item name="android:textSize">@dimen/sp13</item>

        <item name="android:textColor">#666666</item>

    </style>

    <style name="approval_detail_info_style2">

        <item name="android:textSize">@dimen/sp14</item>

        <item name="android:textColor">#333333</item>

    </style>

        SpannableString styledText = new SpannableString(string);

        styledText.setSpan(new TextAppearanceSpan(context, style1), 0, target, Spanned.SPAN_INCLUSIVE_INCLUSIVE);

        styledText.setSpan(new TextAppearanceSpan(context, style2), target+1, string.length()-1, Spanned.SPAN_INCLUSIVE_INCLUSIVE);

        return styledText;