Subscript and Superscript a String in Android

Question

How can you print a string with a subscript or superscript? Can you do this without an external library? I want this to display in a TextView in Android.

Answer 1

((TextView)findViewById(R.id.text)).setText(Html.fromHtml("X<sup><small>2</small></sup>")); 

(or) From String Resource File:

<string name="test_string">
  <![CDATA[ X<sup><small>2</small></sup> ]]>
</string>

Answer 2

It bit late but following just work fine, use superscript as special character, I used spacial char here.

<string name="str">H₂</string>

Answer 3

Example:

equation = (TextView) findViewById(R.id.textView1);
SpannableStringBuilder cs = new SpannableStringBuilder("X3 + X2");
cs.setSpan(new SuperscriptSpan(), 1, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
cs.setSpan(new RelativeSizeSpan(0.75f), 1, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
cs.setSpan(new SuperscriptSpan(), 6, 7, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
cs.setSpan(new RelativeSizeSpan(0.75f), 6, 7, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
equation.setText(cs);