android span text size code example

Example: spannable text size android

private SpannableStringBuilder SpannableStringBuilder(final String text, final char afterChar, final float reduceBy) {
        RelativeSizeSpan smallSizeText = new RelativeSizeSpan(reduceBy);
        SpannableStringBuilder ssBuilder = new SpannableStringBuilder(text);
        ssBuilder.setSpan(
                smallSizeText,
                text.indexOf(afterChar),
                text.length(),
                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
        );

        return ssBuilder;
    }
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TextView textView =view.findViewById(R.id.textview);
String s= "123456.24";
textView.setText(SpannableStringBuilder(s, '.', 0.7f));