Try something like this :

public class PT
	{
		public String test0 { get; set; }
		public String test1 { get; set; }
		public String test2 { get; set; }
		public PageReference nextPage()
		{
			test0 = 'aaa';
			test1 = 'bbb';
			test2 = 'ccc';
			//PageReference np = Page.nextPage;
			PageReference np = new PageReference('/apex/nextPage');
			np.setRedirect(false);
			return np;
		}
	}

Hopefully this will resolve your problem.

Thanks

Ankit Arora

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Hi Ankit, 

Thank you for your prompt reply.

I edited "PT" and tried, but I couldn't resolve my problem.

Thanks,

Seiji

Can you clarify what you mean by doesn't work?

If redirect is set to false and the pages share the same set of controllers and extensions (which certainly appears to be the case here), a server-side redirect will take place.  The URL won't change if that is what you are expecting?  Or is it the case that your properties aren't showing up correctly in the page?

I've recreated your scenario in my dev org and I see exactly the same as you - it looks like the server side redirect isn't honoured when carried out from a page action.

If you can stand the user briefly stopping on your transition page, you can use an actionfunction to forward the user on as soon as the page is rendered like so:

<apex:page controller="PT" sidebar="false">
  <apex:form > 
     <apex:actionFunction name="forward" action="{!NextPage}"/> 
     <!-- Begin Default Content REMOVE THIS --> 
     <h1>Congratulations</h1> 
     This is your new Page: PageTransition <!-- End Default Content REMOVE THIS -->
   </apex:form>
   <script>
      forward();
   </script> 
</apex:page>

And you could also set a have a new page action method that sets a property to stop any content being rendered if the user is going to be sent forward.