Download e-book for kindle: Flex 4 Cookbook by Joshua Noble, Todd Anderson

By Joshua Noble, Todd Anderson

ISBN-10: 0596805616

ISBN-13: 9780596805616

This hugely useful booklet comprises thousands of demonstrated recipes for constructing interactive wealthy web functions. Youll locate every little thing from Flex fundamentals to options for operating with visible elements and knowledge entry, in addition to tips about program improvement, unit trying out, and Adobe AIR. each one recipe encompasses a dialogue of ways and why it really works, and plenty of of them supply pattern code so you might positioned to take advantage of instantly.

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If application requirements dictate the use of navigational 27 containers, the Flex Framework allows for intermixing of MX and Spark containers in the same application. Note, however, that a Spark container cannot be added directly as a child to a MX navigator container. Navigator Content container instance. 1 Position Children Within a Container Problem You want to position child elements of a container using a specified layout. layouts package to the layout property of the target container and apply constraints on the layout and container as necessary.

If an event listener attempts to redispatch this custom event, as shown here: private function customPersonHandler(event:CustomPersonEvent):void { dispatchEvent(event); } the event that is dispatched will not be the event that is received; instead, it will be a copy of the CustomPersonEvent created using the clone() method. EventDispatcher class. Event and will not have any properties of the CustomPersonEvent. 9 Listen for a Keyboard Event Problem You need to listen for the user pressing a key, determine which key was pressed, and handle the event accordingly.

8 Use Custom Events and Dispatch Data with Events Problem You want to dispatch data with an event by using a custom event class. Event class and create a property for the data that you would like to be available from the event. Discussion At times, you may need to dispatch data objects with events, enabling listeners to access that data without accessing the objects that dispatched the events. Renderers or deeply nested objects that are dispatching events up through multiple components to listeners will frequently want to send data without requiring the listening component to find the object and access a property.

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Flex 4 Cookbook by Joshua Noble, Todd Anderson


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