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POForcing method sequences on ActionScript 3.0
 

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  1. POForcing method sequences on ActionScript 3.0
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    <p>I'm having problems with asynchronous sequences on Flex/ActionScript. Here is an example:</p> <pre><code>private function start():void{ _menu = new MyMenu(); _screen.addElement(_menu); //Here, some Mouse Event Listener to Menu Click } </code></pre> <p>Now, let's assume that a click on the menu happened.</p> <pre><code>private function menuClick(event:Event):void{ removeMenu(); addMenu(event.SomethingPassedByTheClick); } </code></pre> <p>Now, forget about the error on the event handler thing, let's just think about the process, ok? My problem is that sometimes addMenu() finishes before removeMenu(), which leads to errors. The above script is just a logical representation of my problem, not a real script. To sunup, I need to be able to define that the method addMenu() HAS to wait for removeMenu() to be done before be called. Any thoughts? Thanks for your attention.</p> <p>Edit:</p> <p>A more accurate example of my problem:</p> <pre><code>private function createComplete():void{ _screenArray = new Array( new Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), new Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), new Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)); startUp(); } private function startUp():void{ //Some mathematical calculations that changes a few 0 to 1's. addNewComponent(); } private function addNewComponent():void{ removeAllComponents(); //More calculus on the array in order to create a component in vague space. addComponentOnCalculatedArea(x, y); //here is my problem: Sometimes, add Method is called before the removeAllComponents, which causes the new added component be removed by the removeAllComponents() method. } </code></pre> <p>Thanks everyone. I had the wrong premise. What was wrong whas my mathematics calcs, not the order of the methods being called. I noticed that by adding trace() in each method of the Script.</p>
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    1. USMarco Aurélio Deleu
    1. USMarco Aurélio Deleu
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    1. COCan you post an independent sample application maybe? I'm not sure I totally follow here because there's no way something could interject in the middle there. As a thought experiment put an infinite while loop after removAllComponents and notice that nothing gets executed
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    2. COUnless your `removeAllComponents` method executes in an asynchronous manner then the `addComponentOnCalculatedArea` cannot be fired until `removeAllComponents` has completed execution. You should deploy some traces or step though with a debugger to see what's really going on.
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    3. COWe would need to see the code in `removeAllComponents()` and `addNewComponent()` to figure out what is wrong. Also, maybe `addComponentOnCalculatedArea()`.
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