SpannableString 예제 (TextView의 글자 꾸미기)

String textString ="테스트문자열입니다"

SpannableString sText = new SpannableString(textString);
TextView text = ((TextView)findViewById(R.id.testtext));
sText.setSpan(new ForegroundColorSpan(Color.RED), 1, 3, 0);
sText.setSpan(new StyleSpan(Typeface.ITALIC), 2,5,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
text.append(sText);

출처 : http://comxp.tistory.com/114