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POMaking buttons link - Adobe flex - Blackberry Playbook
 

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    <p>Maybe a simple question but I'm having alot of trouble making a button change the view of a Flex blackberry playbook app. I am coding it <strong>entirely in actionscript</strong>, no MXML.</p> <pre><code>myButton.addEventListener(MouseEvent.CLICK, doSomethingOnClick); private function doSomethingOnClick(e:MouseEvent):void { navigator.pushView(view.Login, "testdata"); } </code></pre> <p>When I try this I get:</p> <p>1120: Access of undefined property navigator.</p> <p>Which is weird as it works in a MXML file. How do I change views in actionscript?</p> <p>Thanks Phil</p> <p><strong>EDIT:</strong> Cheer J_A_X, but now i have:</p> <pre><code>navigator = new ViewNavigator(); navigator.pushView(net.airpoint.assessments.view.Login, " "); </code></pre> <p>TypeError: Error #1009: Cannot access a property or method of a null object reference.</p> <p>Apologies, as I realise this is really simple stuff but it just isnt clicking!</p> <p><strong>Update 2</strong> *<em>Assessments.as</em>*</p> <pre><code>package { import flash.display.Sprite; import flash.events.Event; import net.airpoint.assessments.view.*; import qnx.ui.core.Container; import qnx.ui.core.ContainerAlign; import qnx.ui.core.ContainerFlow; import qnx.ui.core.Containment; import qnx.ui.text.Label; import spark.components.ViewNavigator; [SWF(height="600", width="1024", frameRate="30", backgroundColor="#FFFFFF")] /* Main Layout */ public class Assessments extends Sprite { //containers private var main:Container; private var menu:Container private var firstLabel:Label; private var navigator:ViewNavigator; public function Assessments() { initializeUI(); } private function initializeUI():void { main = new Container(); main.padding = Vector.&lt;Number&gt;([20,20,20,20]); main.flow = ContainerFlow.HORIZONTAL; main.debugColor = 0xFFCC00; firstLabel = new Label(); firstLabel.text = "First label"; firstLabel.size=35; main.addChild(firstLabel); addChild(main); navigator = new ViewNavigator(); navigator.pushView(Login, " "); } } } </code></pre> <p><strong>Login.as</strong></p> <pre><code>package net.airpoint.assessments.view { import flash.display.Sprite; import flash.events.MouseEvent; import qnx.ui.buttons.Button; import qnx.ui.core.Container; import qnx.ui.text.Label; import qnx.ui.text.TextInput; import spark.components.View; public class Login extends View { private var usernameLabel:Label; public function Login() { initializeUI(); } public function initializeUI():void { usernameLabel.text = "test"; this.addChild(usernameLabel); } } } </code></pre>
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    1. CODo you actually have the navigator added? Says here that you don't.
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    2. COOh dear! lol. As it worked without instantiating in the MXML I was under the inpression it was some sort of language keyboard. However, now i have: navigator = new ViewNavigator(); navigator.pushView(net.airpoint.assessments.view.Login, " "); and I get...: TypeError: Error #1009: Cannot access a property or method of a null object reference.
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    3. COIs this a pure actionscript project? Because Flex components works differently since AS projects are Sprite based. Also, you don't need to add the full path, just `Login` would work as long as it's imported. And lastly, you want to add the ViewNavigator to the displaylist by doing `addElement(navigator)`.
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