安卓設置某些文字的字體顏色

//private BackgroundColorSpan span = new (Color.RED);//文字背景色

private ForegroundColorSpan span = new ForegroundColorSpan(Color.RED);//字體顏色

if (null != bean) {

    // vh.mNameTv.setText(bean.getSgName());
    vh.mDesTv.setText(bean.getSgDescribe());
    vh.mPetNmaeTv.setText(bean.getSgPetName());
    vh.mHeadImg.setImageResource(bean.getSgHeadBp());


    String username = bean.getSgName();
    int index = username.indexOf(result, 0);
    Log.e("logcat", "result=" + result + ";username=" + username + ";index=" + index);
    if (index < 0) {
        vh.mNameTv.setText(username);
    } else {//設置username中，包含的result這些字的顏色為紅色
        SpannableString spanString = new SpannableString(username);
        spanString.setSpan(span, index, index + result.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        vh.mNameTv.setText(spanString);
    }


}