I have created a Mobile application and have been copying over some code from a desktop app. It seems like mx.controls.Alert is not available to a mobile app. What is the default way of showing a message to the user on a mobile device. My messages could be a data validation message, or database error, or confirm delete. Is there a mobile equivalent to Alert or is there some other way od displaying the message on a mobile device?
I'm not sure if a kind of alert is the best way to show messages in a mobile application, but you can use the PopupManager class instead.
You might find the SkinnablePopUpContainer component useful: http://opensource.adobe.com/wiki/display/flexsdk/SkinnablePopUpContainer
You'll need to be in the Hero prerelease program to get access to the latest builds that include that component.