1. SpannableString 2. setPaintFlags 3. Html.fromHtml SpannableString String udata="SpannableString underline sample"; SpannableString content = new SpannableString(udata); content.setSpan(new UnderlineSpan(), 0, udata.length(), 0); mTextView.setText(content); setPaintFlags mTextView.setPaintFlags(mTextView.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG); mTextView.setText("Paint flag underline samp..