Android set text background color

 

    //set label style
    public void setTagStyle(TextView tv, String tag) {
        ArrayList indexs = new ArrayList();
        for (int i = 0; i < tag.length(); i++) {
            char item = tag.charAt(i);
            if ((item + "").equals(" ")) {
                indexs.add(i);
            }
        }
        String[] strs = tag.split(" ");
        SpannableString spannableString = new SpannableString(tag);
        for (int i = 0; i < strs.length; i++) {
            String value = strs[i];
            if (!value.equals("")) {
                int len = value.length();
                int end = (int) indexs.get(i);
                int begin = end - len;
                spannableString.setSpan(new BackgroundColorSpan(R.color.gray1), begin, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
            }
        }
        tv.setText(spannableString);
    }