Question : Fade In Logo when state is changed

I have the following command:  this.currentState="main_page";
how can I fade in an image control when the state gets changed to "main_page"?

Answer : Fade In Logo when state is changed

Using transition on States you can add such effects.

Follow this link: http://www.switchonthecode.com/tutorials/flex-snippet-series-state-transitions

Hope this will be helpful.