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jerome2
Participating Frequently
Jul 6, 2011 7:43 AM UTC
Question

Lock orientation AIR 2.7 Android

Hi,

I working on an app where I want to respond to the device rotation changes but I want the stage to remain in the statting landscape mode.

I listen to StageOrientationEvent.ORIENTATION_CHANGING on the stage and preventDefault once I updated the app. This behavior woks when I test on the desktop. But on the devices (gTab and Atrix) the stage still re-orients.

autoOrient is set to true in the xml. aspectRation is set to landscape. Setting autoArient to false means the StageOrientationEvent never fires.

What am I missing?!

private function onStageOrientationChanging( e:StageOrientationEvent 😞void
{
                    // do my stuff & kill event
                    e.preventDefault();
          }
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7 replies
jerome2Author
Participating Frequently
Jul 11, 2011 6:53 AM UTC
For those interested here's the final project: http://www.countthedots.com/
Next up packaging for BB Playbook 
Cheers,
J.
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boat5
Inspiring
Jul 11, 2011 1:37 AM UTC
Jerome, can you tell me how you got Adobe Air running on the gTab and if its stable? (viewsonic gtab right?) I have read of the 'market fix' but also read of issues with Air on gTab.
Is there a specific rom i should put on it? My father owns one and would like me to install Air and all its glory!
thanks
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jerome2Author
Participating Frequently
Jul 11, 2011 6:52 AM UTC
Hi Boat5,
I meant the Samsung Galaxy Tab not the Viewsonic gTab 
Cheers,
J.
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relaxatraja
relaxatraja
Inspiring
Jul 6, 2011 8:51 AM UTC
Try this:
import flash.display.StageOrientation;



stage.scaleMode = StageScaleMode.NO_SCALE;



stage.align = StageAlign.TOP_LEFT;






var startOrientation:String = stage.orientation;






if (startOrientation == "default"){



stage.setOrientation(StageOrientation.ROTATED_RIGHT);



}



if (startOrientation == "upsideDown"){



stage.setOrientation(StageOrientation.ROTATED_LEFT);



}






stage.addEventListener(StageOrientationEvent.ORIENTATION_CHANGING,
orientationChangeListener);



function orientationChangeListener(e:StageOrientationEvent){



if (e.afterOrientation == "default" ||
e.afterOrientation == "upsideDown"){



e.preventDefault();



}              



}
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jerome2Author
Participating Frequently
Jul 6, 2011 9:49 AM UTC
Hi Relaxatraja,
In theory this should work, but I have found the root of the issue: "ORIENTATION_CHANGING events are not dispatched on Android devices." 
Since ORIENTATION_CHANGE is not cancelable this means you can't prevent the default behavior on Android. The device will auto-orient unless you disable it in the XML... FML. 
Unless someone has a work around, I will post a bug report or feature request 
Cheers,
J.
   
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jerome2Author
Participating Frequently
Jul 6, 2011 12:17 PM UTC
I figured out a workaround:
1- set autoOrient to false in the xml
2- in an accelerometer event or ENTER_FRAME event check the stage.deviceOrientation. This returns the state of the device exactly as stage.orientation would if you had autoOrient to true in the XML.
It's a hack, but it works. The stage doesn't re-orient and I get the device orientation to update the elements in my app 
Cheers,
J.
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