preInitialize: mx.core.UIComponent.preinitialize

Event Type: mx.events.FlexEvent.PREINITIALIZE

This event is dispatched at the beginning of the component initialization sequence. The component is in a very raw state when this event is dispatched. Many components, such as Button control creates internal child components to implement functionality. For example, the Button control creates an internal UI TextField component to represent its label text.

When Flex dispatches the pre-initialize event, the children, including all the internal children, of a component have not yet been created.

initialize: mx.core.UIComponent.initialize

Event Type: mx.events.FlexEvent.INITIALIZE

This event is dispatched after pre-initialize phase. Flex framework initializes the internal structure of this component during this phase. This event automatically fires when the component is added to a parent.

You do not need to call initialize() generally.

creationComplete: mx.core.UIComponent.creationComplete

Event Type: mx.events.FlexEvent.CREATION_COMPLETE

This event is dispatched when the component has finished its construction, property processing, measuring, layout, and drawing.

At this point, depending on its visible property, the component is not visible even though it has been drawn.

applicationComplete: spark.components.Application.applicationComplete

Event Type:mx.events.FlexEvent.APPLICATION_COMPLETE

Dispatched after the Application has been initialized, processed by the LayoutManager, and attached to the display list.

This is the last event of the application creation life cycle and signifies that application has been loaded completely.