Dose titanium use device's default web engine for HTML5 and CSS2 or use it's own embedded engine?
I want to know what happens for HTML5 and CSS2 on Android 1.5 or 1.6 and Iphone OS 2.2.1 and less when I used Titanium.UI.WebView in my app?
As far as I know the Titanium.UI.WebView is the normal webview ( webkit ) supported by the device. So it will support as much html5 and css2/3 as the native webview will.
Titanium uses the web view component for the underlying operating system, which for all of our currently supported platforms is WebKit. The mobile versions of WebKit currently out there have good support for HTML 5 and CSS 3 - Apple has pretty decent docs on what you can accomplish with WebKit at their Safari developer center.