Tweet o = tweets.get(position);
TextView tt = (TextView) v.findViewById(R.id.toptext);
//TextView bt = (TextView) v.findViewById(R.id.bottomtext);
EditTex
SpannableString hint = new SpannableString(o.content.toString());
Font size
hint.setSpan(new RelativeSizeSpan(0.9f), 0, hint.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
Font family
hint.setSpan(new TypefaceSpan("sans-serif"), 0, hint.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
italic
hint.setSpan(new StyleSpan(Typeface.ITALIC), 0, s.length(), 0);
color
hint.setSpan(new ForegroundColorSpan(Color.GRAY), 0, hint.length(), 0);
bold
hint.setSpan(new StyleSpan(Typeface.BOLD), 0, hint.length(), 0);
Reference link: https://www.programcreek.com/java-api-examples/index.php?api=android.text.style.RelativeSizeSpan