[FLEX-29012] A resize event is dispatched before orientationChanging on iOS devices when the ViewNavigatorApplication dimensions are not explicitly set

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Adobe Flex SDK 4.6 (Release)
• Component/s: Spark: Application
• Environment: Affected OS(s): Apple IOS; Browser: Internet Explorer 8.x; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 11/Jan/12 07:36
• Updated: 11/Jan/12 07:39

Description

Steps to reproduce:

Set the following properties in the application descriptor file:

<aspectRatio>landscape</aspectRatio>
<autoOrients>true</autoOrients>

Compile the code below for iOS and run in the iPad simulator or on an actual device, then change the device orientation.

<?xml version="1.0" encoding="utf-8"?>
<s:ViewNavigatorApplication
applicationComplete="applicationCompleteHandler();"
applicationDPI="160"
firstView="views.appHomeView"
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">

<fx:Script>
<![CDATA[

import mx.events.ResizeEvent;

private function applicationCompleteHandler():void

{ addEventListener(ResizeEvent.RESIZE, applicationResizeHandler); stage.addEventListener(StageOrientationEvent.ORIENTATION_CHANGING, stageOrientationChangingHandler); }

private function applicationResizeHandler(event:ResizeEvent):void

{ trace("applicationResizeHandler called"); }

private function stageOrientationChangingHandler(event:StageOrientationEvent):void

{ event.preventDefault(); trace("stageOrientationChangingHandler called"); }

]]
>
</fx:Script>

</s:ViewNavigatorApplication>

<?xml version="1.0" encoding="utf-8"?>
<s:View
backgroundColor="#185f98"
title="Orientation Test"
updateComplete="updateCompleteHandler(event);"
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">

<fx:Script>
<![CDATA[

import mx.events.FlexEvent;

private function updateCompleteHandler(event:FlexEvent):void

{ trace("View Dimensions (W, H): " + width + ", " + height); }

]]
>
</fx:Script>

</s:View>

Actual Results:
The resize event fires, followed by the orientationChanging event. The orientation does not change; however, the view is resized.

Expected Results:
Since we're calling the preventDefault() method of the orientationChanging event, automatic reorientation should be cancelled and a resize event should not be triggered.

Workaround (if any):
Supplying explicit dimensions to the ViewNavigatorApplication, as shown below, yields the expected behavior.

<s:ViewNavigatorApplication
applicationComplete="applicationCompleteHandler();"
applicationDPI="160"
firstView="views.appHomeView"
height="768"
width="1024"
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">