我正在开发一个 ipad 应用程序,因为我将应用程序纵横比设置为横向,并在应用程序描述符 xml 中自动定向为真,就像这样
<!-- The initial aspect ratio of the app when launched (either "portrait" or "landscape"). Optional. Mobile only. Default is the natural orientation of the device -->
<aspectRatio>portrait</aspectRatio>
<autoOrients>false</autoOrients>
默认情况下,我的应用程序以横向视图加载,但是当用户在“Landscape_Left”视图中握住 ipad 时,即 ipad-home-button 面向用户的左侧,然后启动屏幕旋转到“Landscape_right”,它看起来是颠倒的。然后用户必须将 ipad 旋转 180 度才能直视应用程序,每次打开应用程序时都会发生这种情况。我无法阻止应用程序旋转到默认横向视图,我尝试在预初始化中将方向设置为 ROTATED_LEFT,但它先旋转到默认然后再到左。
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" applicationDPI="160"
addedToStage="application1_addedToStageHandler(event)"
preinitialize="application1_preinitializeHandler(event)"
creationComplete="application1_creationCompleteHandler(event)"
backgroundColor="#333A42"
splashScreenImage="@Embed('assets/app_logo.png')"
splashScreenMinimumDisplayTime="3000" >
<fx:Script>
<![CDATA[
import mx.events.FlexEvent;
import mx.managers.ISystemManager;
protected function application1_addedToStageHandler(event:Event):void
{
// TODO Auto-generated method stub
trace("Orientation ::"+this.stage.orientation);
}
protected function application1_preinitializeHandler(event:FlexEvent):void
{
// TODO Auto-generated method stub
trace("Aspect Ratio ::"+this.aspectRatio);
var calAR:String = this.width > this.height ? StageAspectRatio.LANDSCAPE : StageAspectRatio.PORTRAIT;
trace("Calculate Aspect Ratio ::"+calAR);
var sm:ISystemManager = systemManager;
if (sm && sm.stage && sm.isTopLevelRoot())
{
// sm.stage.addEventListener("orientationChanging", stage_orientationChangingHandler);
// sm.stage.addEventListener("orientationChange", stage_orientationChange);
trace("System manager Orientation ::"+sm.stage.orientation);
trace("System manager Device Orientation ::"+sm.stage.deviceOrientation);
sm.stage.setOrientation(StageOrientation.ROTATED_LEFT);
sm.stage.setAspectRatio(StageAspectRatio.LANDSCAPE);
}
}
protected function application1_creationCompleteHandler(event:FlexEvent):void
{
var sm:ISystemManager = systemManager;
if (sm && sm.stage && sm.isTopLevelRoot())
{
trace("System manager Orientation ::"+sm.stage.orientation);
trace("System manager Device Orientation ::"+sm.stage.deviceOrientation);
}
}
]]>
</fx:Script>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:BorderContainer height="300" horizontalCenter="0" verticalCenter="0">
<s:VGroup horizontalAlign="center">
<s:TextInput id="txtAspectRatio"/>
<s:Button label="Test" click="{txtAspectRatio.text = this.stage.orientation}"/>
</s:VGroup>
</s:BorderContainer>
</s:Application>
这个问题有什么解决办法吗?它甚至在调用 Application 构造函数之前就旋转了。