Try this link:
http://help.adobe.com/en_US/photoshop/cs…
hop to help you. Answered May, 15 2011

You may try this:
headerLabel.textAlignment = UITextAlignmentCenter;
Or
Use CSS to align your text. If you are using a different type of container, such as a span or div, you will need to use style sheets and CSS to align your text. In this case, you will need to write code in your style sheet. If this is an in-line style sheet, your CSS will be via a style attribute, like this: <span style=
Add the text-alignment style. Inside your style sheet, to center your text, add the style "text-alignment:center." Your in-line style sheet might look like this: <span style='text-alignment:center;'>

Read more: How to Align Text in HTML | eHow.com http://www.ehow.com/how_4924844_align-text-html.html#ixzz1982jO6n2 Answered Dec, 27 2010

Sorry but you can't do this .

you can use

DIV Tag and CSS

http://webdesign.about.com/od/htmltags/ht/htdivcenter.htm

Answered Aug, 10 2010