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我有一个视频舞台需要添加一个全屏按钮，我添加了这个代码：

private function makeFullScreenVideo(e:Event):void
    {
        saveOldestPositionAndSizeOfVideo();
        if(!isFull)
        {
            stage.getChildAt(0).x = 0;
            stage.getChildAt(0).y = 0;
            stage.getChildAt(0).width = stage.fullScreenWidth;
            stage.getChildAt(0).height = stage.fullScreenHeight; 

        }
        else
        {
            if(stage.fullScreenHeight>stage.fullScreenWidth)
            {
                stage.getChildAt(0).x = oldXOfVerticalView;
                stage.getChildAt(0).y = oldYOfVerticalView;
                stage.getChildAt(0).width = oldWidthOfVerticalView;
                stage.getChildAt(0).height = oldHeightOfVerticalView;   
            }
            else
            {
                stage.getChildAt(0).x = oldXOfHorizentalView;
                stage.getChildAt(0).y = oldYOfHorizentalView;
                stage.getChildAt(0).width = oldWidthOfHorizentalView;
                stage.getChildAt(0).height = oldHeightOfHorizentalView;
            } 
        }

        isFull = !isFull;

    }
    private function saveOldestPositionAndSizeOfVideo():void
    {
        if(stage.fullScreenHeight>stage.fullScreenWidth)
        {
            oldWidthOfVerticalView = stage.fullScreenWidth;
            oldHeightOfVerticalView= stage.fullScreenHeight*0.468;
            oldXOfVerticalView= 0;
            oldYOfVerticalView= 0;
        }
        else
        {
            if(oldWidthOfHorizentalView == 0)
            {
                oldWidthOfHorizentalView = stage.getChildAt(0).width;
                oldHeightOfHorizentalView= stage.getChildAt(0).height;
                oldXOfHorizentalView= stage.getChildAt(0).x;
                oldYOfHorizentalView= stage.getChildAt(0).y;    
            }
        }
    }

当我运行它时，这段代码运行良好。问题是当方向改变时，如果改变全屏模式的方向，我在里面写的代码不会这样做StageOrientationEvent：

private function changeOrientation(evt:StageOrientationEvent):void
    {
        if(isFull)
        {
            stage.getChildAt(0).x = 0;
            stage.getChildAt(0).y = 0;
            stage.getChildAt(0).width = stage.fullScreenWidth;
            stage.getChildAt(0).height = stage.fullScreenHeight;
        }
    }

提示：如果我在桌面上而不是在设计上运行项目，它将工作得很好，并且方向没有问题。

4

1 回答 1

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这是我在内置 StageOrientationEvents 遇到一些困难后为自己的项目编写的一些代码。请注意，这是一个 WIP，所以如果您有任何建议，请告诉我。我创建了两个类，一个是单例，一个是它调度的事件，为了使用它，我获取单例的实例并为事件添加侦听器：

[AccelerometerManager.as]

package com.shaunhusain.fingerPainting.managers
{
    import com.shaunhusain.fingerPainting.events.AccBasedOrientationEvent;

    import flash.events.AccelerometerEvent;
    import flash.events.EventDispatcher;
    import flash.sensors.Accelerometer;

    /**
     * Centralizes the handling of accelerometer changes, limits events
     * dispatched to avoid extraneous jiggle/dithering.
     */
    public class AccelerometerManager extends EventDispatcher
    {
        //--------------------------------------------------------------------------------
        //              Constants
        //--------------------------------------------------------------------------------
        public static const LANDSCAPE_LEFT:String = "landscapeLeft";
        public static const LANDSCAPE_RIGHT:String = "landscapeRight";
        public static const PORTRAIT_DEFAULT:String = "portraitDefault";
        public static const PORTRAIT_FLIPPED:String = "portraitFlipped";

        public static const TURNED_RIGHT:String = "turnedRight";
        public static const TURNED_LEFT:String = "turnedLeft";
        public static const FLIPPED:String = "flipped";

        //--------------------------------------------------------------------------------
        //              Variables
        //--------------------------------------------------------------------------------
        private var acc:Accelerometer;
        private var registeredStageListener:Boolean;
        private var previousOrientation:String=PORTRAIT_DEFAULT;
        private var degreeAllowance:Number = 20;
        private var previousAngle:Number=270;

        //--------------------------------------------------------------------------------
        //              Constructor
        //--------------------------------------------------------------------------------
        /**
         * Used to coordinate all the updates to the buttons without having
         * multiple instances of accelerometer objects.  Creates the handle
         * to the Accelerometer.
         * 
         * @param se Blocks creation of new managers instead use static method getInstance
         */
        public function AccelerometerManager(se:SingletonEnforcer)
        {
            acc = new Accelerometer();
        }

        //--------------------------------------------------------------------------------
        //              Singleton
        //--------------------------------------------------------------------------------
        private static var instance:AccelerometerManager;
        public static function getIntance():AccelerometerManager
        {
            if( instance == null ) instance = new AccelerometerManager( new SingletonEnforcer() );
            return instance;
        }

        //--------------------------------------------------------------------------------
        //              Properties
        //--------------------------------------------------------------------------------

        private var _currentlyActive:Boolean;
        /**
         * Allows the manager to be turned on or off from the outside.
         */
        public function set currentlyActive(value:Boolean):void{
            if(_currentlyActive == value)
                return;
            _currentlyActive = value;
            if(_currentlyActive)
                acc.addEventListener(AccelerometerEvent.UPDATE, handleAccelerometerChange);
            else
                acc.removeEventListener(AccelerometerEvent.UPDATE, handleAccelerometerChange);
        }

        private var _currentOrientation:String = AccelerometerManager.PORTRAIT_DEFAULT;
        public function get currentOrientation():String
        {
            return _currentOrientation;
        }

        public function set currentOrientation(value:String):void
        {
            _currentOrientation = value;
        }


        //--------------------------------------------------------------------------------
        //              Handlers
        //--------------------------------------------------------------------------------  
        private function handleAccelerometerChange(event:AccelerometerEvent):void
        {
            if(Math.abs(event.accelerationZ)<.75)
            {
                var angle:Number = Math.atan2(event.accelerationY, event.accelerationX);
                var degrees:Number = angle*180/Math.PI+180;

                if(Math.abs(degrees - previousAngle)<degreeAllowance)
                    return;

                previousAngle = degrees;

                var accEventExtra:AccBasedOrientationEvent = new AccBasedOrientationEvent(event.type,event.bubbles,event.cancelable);
                if(degrees>225&&degrees<315)
                    currentOrientation = PORTRAIT_DEFAULT;
                else if(degrees>45&&degrees<135)
                    currentOrientation = PORTRAIT_FLIPPED;
                else if(degrees>=135&&degrees<=225)
                    currentOrientation = LANDSCAPE_LEFT;
                else if(degrees>=315||degrees<=45)
                    currentOrientation = LANDSCAPE_RIGHT;

                if(currentOrientation == previousOrientation)
                    return;

                accEventExtra.oldOrientation = previousOrientation;
                accEventExtra.newOrientation = currentOrientation;
                accEventExtra.directionOfChange = determineDirectionOfChange(previousOrientation,currentOrientation);

                previousOrientation = currentOrientation;

                dispatchEvent(accEventExtra);
            }
        }
        private function determineDirectionOfChange(oldOrientation:String, newOrientation:String):String
        {
            var turned:String;
            switch(oldOrientation)
            {
                case PORTRAIT_DEFAULT:
                    switch(newOrientation)
                    {
                        case LANDSCAPE_LEFT:
                            turned = TURNED_LEFT;
                            break;
                        case LANDSCAPE_RIGHT:
                            turned = TURNED_RIGHT;
                            break;
                        case PORTRAIT_FLIPPED:
                            turned = FLIPPED;
                            break;
                    }
                break;
                case LANDSCAPE_LEFT:
                    switch(newOrientation)
                    {
                        case PORTRAIT_DEFAULT:
                            turned = TURNED_RIGHT;
                            break;
                        case LANDSCAPE_RIGHT:
                            turned = FLIPPED;
                            break;
                        case PORTRAIT_FLIPPED:
                            turned = TURNED_LEFT;
                            break;
                    }
                    break;
                case LANDSCAPE_RIGHT:
                    switch(newOrientation)
                    {
                        case LANDSCAPE_LEFT:
                            turned = FLIPPED;
                            break;
                        case PORTRAIT_DEFAULT:
                            turned = TURNED_LEFT;
                            break;
                        case PORTRAIT_FLIPPED:
                            turned = TURNED_RIGHT;
                            break;
                    }
                    break;
                case PORTRAIT_FLIPPED:
                    switch(newOrientation)
                    {
                        case LANDSCAPE_LEFT:
                            turned = TURNED_RIGHT;
                            break;
                        case LANDSCAPE_RIGHT:
                            turned = TURNED_LEFT;
                            break;
                        case PORTRAIT_DEFAULT:
                            turned = FLIPPED;
                            break;
                    }
                    break;

            }
            return turned;
        }
    }
}

internal class SingletonEnforcer {public function SingletonEnforcer(){}}

[AccBasedOrientationEvent.as]

package com.shaunhusain.fingerPainting.events
{
    import flash.events.Event;

    /**
     * Added a property to store the current linearRotation pre-computed so
     * each handler doesn't have to compute it.
     */
    public class AccBasedOrientationEvent extends Event
    {
        public var oldOrientation:String;
        public var newOrientation:String;
        public var directionOfChange:String;
        public function AccBasedOrientationEvent(type:String, bubbles:Boolean=false, cancelable:Boolean=false, oldOrientation:String=null, newOrientation:String=null, directionOfChange:String=null)
        {
            super(type, bubbles, cancelable);
            this.oldOrientation = oldOrientation;
            this.newOrientation = newOrientation;
            this.directionOfChange = directionOfChange;
        }
    }
}

用法最终应该看起来像这样：

                   {
                   ...
                   var accManager:AccelerometerManager = AccelerometerManager.getIntance();
                accManager.addEventListener(AccelerometerEvent.UPDATE, handleAccelerometerChange);

                var locRot:Number;
                switch(accManager.currentOrientation)
                {
                    case AccelerometerManager.PORTRAIT_DEFAULT:
                        locRot = 0;
                        break;
                    case AccelerometerManager.PORTRAIT_FLIPPED:
                        locRot = Math.PI;
                        break;
                    case AccelerometerManager.LANDSCAPE_LEFT:
                        locRot = Math.PI/2;
                        break;
                    case AccelerometerManager.LANDSCAPE_RIGHT:
                        locRot = -Math.PI/2;
                        break;
                }

                var ge:GenericActuator = Actuate.tween(this, 1, {rotateAroundCenter:locRot});
                            ...
                        }

private function handleAccelerometerChange(event:AccBasedOrientationEvent):void
        {
            var locRot:Number;
            switch(event.newOrientation)
            {
                case AccelerometerManager.PORTRAIT_DEFAULT:
                    locRot = 0;
                    break;
                case AccelerometerManager.PORTRAIT_FLIPPED:
                    locRot = Math.PI;
                    break;
                case AccelerometerManager.LANDSCAPE_LEFT:
                    locRot = Math.PI/2;
                    break;
                case AccelerometerManager.LANDSCAPE_RIGHT:
                    locRot = -Math.PI/2;
                    break;
            }

            var ge:GenericActuator = Actuate.tween(this, 1, {rotateAroundCenter:locRot});
            //rotateAroundCenter = event.linearRotation;
        }

注意：我在示例中使用 Actuate 库为旋转设置动画，这根本不是必需的，这里的所有其他内容都应该内置或在上面提供。

于 2013-04-22T11:09:14.657 回答