Accelerometer

Home View MXML:


<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
   viewActivate="view1_viewActivateHandler(event)" 
        xmlns:s="library://ns.adobe.com/flex/spark"
        title="Accelerometer">
    <fx:Script>
        <![CDATA[
            import flash.events.AccelerometerEvent;
            import flash.sensors.Accelerometer;
            
            import spark.events.ViewNavigatorEvent;;
            
            import spark.components.supportClasses.StyleableTextField;
            
            protected var accelerometer:Accelerometer;    
            
            protected function view1_viewActivateHandler(event:ViewNavigatorEvent):void
            {
                if (Accelerometer.isSupported==true)
                {
                    currentState = "normal";
                    accelerometer = new Accelerometer();
                    accelerometer.setRequestedUpdateInterval(100);
                    accelerometer.addEventListener(AccelerometerEvent.UPDATE, onUpdate);
                    addEventListener(ViewNavigatorEvent.REMOVING,onRemove);
                } 
                else 
                {
                    currentState = "unsupported";
                    lblSupport.text = "Accelerometer feature not supported on this device.";
                }
            }
            
            protected function onUpdate(event:AccelerometerEvent):void 
            {
                log.appendText("acceleration X: " + event.accelerationX.toString() + "\n"
                    + "acceleration Y: " + event.accelerationY.toString() + "\n"
                    + "acceleration Z " + event.accelerationZ.toString()  + "\n"
                    + "timestamp: " + event.timestamp.toString()  + "\n");
                StyleableTextField(log.textDisplay).scrollV = StyleableTextField(log.textDisplay).scrollV+1;
            }
            
            protected function onRemove(event:ViewNavigatorEvent):void
            {
                this.accelerometer.removeEventListener(AccelerometerEvent.UPDATE, onUpdate);
            }
            
        ]]>
    </fx:Script>
    
    <s:states>
        <s:State name="normal"/>
        <s:State name="unsupported"/>
    </s:states>
    
    <s:layout>
        <s:VerticalLayout paddingTop="15" paddingBottom="15" paddingLeft="15" paddingRight="15" gap="40"/>
    </s:layout>
    
    <s:Label id="lblSupport" includeIn="unsupported" width="95%"/>
    <s:TextArea width="100%" editable="false"  
                text="The Accelerometer dispatches events based on activity detected by the device's motion sensor representing location or movement along a 3-dimensional axis." includeIn="normal"/>
    <s:VGroup width="400" includeIn="normal">
        <s:Label text="Event Log:"/>
        <s:TextArea id="log" editable="false" height="200"/>
    </s:VGroup>
</s:View>

Main MXML :

<?xml version="1.0" encoding="utf-8"?>
<s:ViewNavigatorApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
     xmlns:s="library://ns.adobe.com/flex/spark" 
     firstView="views.SampleAccelerometer">
               
   <fx:Declarations>
       <!-- Place non-visual elements (e.g., services, value objects) here -->
   </fx:Declarations>
    
</s:ViewNavigatorApplication>

Output :