research web technologies for text view

[echostar7]

such as css, html 5, etc

[ecobos]

You are only allowed to use HTML syntax with textView like this:
textView.setText(Html.fromHtml(" -- HTML goes here --"));

If you want to use CSS, one would need to use WebView (http://developer.android.com/reference/android/webkit/WebView.html), which just renders the data from a website.

[jyoti2730]

yes, You need to use Html.fromHtml() to use HTML in your XML Strings. Simply referencing a String with HTML in your layout XML will not work.