我怎样才能在视图堆栈之间很好地制作动画

Question

我有一个 Adob​​e Air 小应用程序，我想在其中拥有多个“视图”。 我可以使用 ViewStack 实现这些视图，但很难找到一种在它们之间进行动画处理的好方法。

这是我尝试过的方法，虽然它有效，但当我想要的更像是 DestroyTwitter 应用程序时，一个视图会在滑入视图之前消失，其中视图和所有控件都很好地滑出视图：

<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="400" height="700" top="100" left="100" creationComplete="onComplete()">
    <mx:Script>
    <![CDATA[
        import mx.core.Application;
        private function onComplete():void
        {
            stack.selectedChild = stack1;
        }

        private function switchTab():void
        {
            if( stack.selectedChild == stack1 )
            {
                stack.selectedChild = stack2;
            }
            else
            {
                stack.selectedChild = stack1;
            }
        }
    ]]>
    </mx:Script>

    <mx:Move id="slideLeft" xFrom="{Application.application.width}" xTo="0" yTo="0" duration="500" />
    <mx:Move id="slideRight" xFrom="0" xTo="{Application.application.width}" duration="500" />

    <mx:ViewStack id="stack" width="200%" height="100%">
        <mx:VBox id="stack1" width="100%" height="100%" backgroundColor="white" hideEffect="{slideRight}" >
            <mx:Label text="Stack 1" />
            <mx:Button label="Switch" click="switchTab()" />
        </mx:VBox>

        <mx:VBox id="stack2" width="100%" height="100%" backgroundColor="#cdcdcd" hideEffect="{slideLeft}" >
            <mx:Label text="Stack 2" />
            <mx:Button label="Switch" click="switchTab()" />
        </mx:VBox>

    </mx:ViewStack>
</mx:WindowedApplication>

有没有人有任何更好的想法可以尝试，是感谢任何回应？

Answer 1

您可以尝试的一件事是更高级地切换视图。 单击“切换”按钮后，执行移动，直到移动完成后才进行交换。

也许是这样的：

private function switchTab():void {

    var move:Move = new Move(stack.selectedChild as DisplayObject); //not sure about the casting right now...might need to check on that
    // implement move details here...

    //closure to make sure the next child is swapped in after the animation completes
    var done:Function = function(event:Event):void {
        // do the change here in this closure
        if (stack.selectedChild == stack1) {
            stack.selectedChild = stack2;
        }
        else {
            stack.selectedChild = stack1;
        }
        // remove the EventListener..don't want memory leaks :)
        move.removeEventListener(EffectEvent.END, done);
    }
    // make sure 'move' performs the 'done' function when the animation finishes
    move.addEventListener(EffectEvent.END, done);

    move.play();
}

Answer 2

将模糊添加到上面接受的答案中。 使过渡看起来更平滑/更酷。

我试图从这个很酷的 Arduino 速度计复制状态转换 迈克·钱伯斯，丹的回答加上一些模糊就达到了目的。

<!-- Define Transition array with one Transition object.-->
    <mx:transitions>
        <!-- A transition for changing from any state to any state. -->
        <mx:Transition id="myTransition" fromState="*" toState="*">
            <mx:Sequence id="s1" targets="{[stack1,stack2]}">

                <mx:Blur duration="50" blurXFrom="0.0" blurXTo="5.0"
                         blurYFrom="0.0" blurYTo="5.0"/>

                <mx:Parallel id="t1" targets="{[stack1,stack2]}">
                        <mx:Move duration="400"/>
                </mx:Parallel>

                <mx:Blur duration="50" blurXFrom="5.0" blurXTo="0.0"
                          blurYFrom="5.0" blurYTo="0.0"/>
            </mx:Sequence>

        </mx:Transition>
    </mx:transitions>

Answer 3

我将使用控制哪个视图处于活动状态的状态，然后定义在这些状态之间移动的转换：

http://livedocs.adobe.com/flex/3/html/help.html?content=transitions_3.html

Answer 4

这正是我想要实现的目标：

<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" 
    layout="absolute" width="400" height="700" top="100" left="100" 
    horizontalScrollPolicy="off" verticalScrollPolicy="off"
    >

    <mx:Script>
        <![CDATA[
            import mx.core.Application;
        ]]>
    </mx:Script>


    <mx:states>
    <mx:State name="One">
            <mx:SetProperty target="{stack1}" name="x" value="0"/>
            <mx:SetProperty target="{stack1}" name="y" value="50"/>
            <mx:SetProperty target="{stack1}" name="width" value="{Application.application.width}"/>

            <mx:SetProperty target="{stack2}" name="x" value="{Application.application.width}"/>
            <mx:SetProperty target="{stack2}" name="y" value="50"/>
            <mx:SetProperty target="{stack2}" name="width" value="{Application.application.width}"/>
    </mx:State>

    <mx:State name="Two">
            <mx:SetProperty target="{stack1}" name="x" value="-{Application.application.width}"/>
            <mx:SetProperty target="{stack1}" name="y" value="50"/>
            <mx:SetProperty target="{stack1}" name="width" value="{Application.application.width}"/>

            <mx:SetProperty target="{stack2}" name="x" value="0"/>
            <mx:SetProperty target="{stack2}" name="y" value="50"/>
            <mx:SetProperty target="{stack2}" name="width" value="{Application.application.width}"/>
    </mx:State>
    </mx:states>


    <!-- Define Transition array with one Transition object.-->
    <mx:transitions>
        <!-- A transition for changing from any state to any state. -->
        <mx:Transition id="myTransition" fromState="*" toState="*">
            <mx:Parallel id="t1" targets="{[stack1,stack2]}">
                <mx:Move    duration="400"/>
            </mx:Parallel>
        </mx:Transition>
    </mx:transitions>

    <mx:HBox>
        <mx:Button label="Switch To Two" click="currentState='Two'" />
        <mx:Button label="Switch To One" click="currentState='One'" />
    </mx:HBox>

    <mx:Canvas id="stack1" x="0" y="50" width="100%" height="100%" borderThickness="1" borderStyle="solid">
        <mx:VBox width="100%" height="100%" backgroundColor="white">
            <mx:Label text="Stack 1" />
            <mx:Box backgroundColor="red" width="20" height="20" />
        </mx:VBox>
    </mx:Canvas>

    <mx:Canvas id="stack2" x="{Application.application.width}" y="50" width="100%" height="100%" borderThickness="1" borderStyle="solid">
        <mx:VBox width="100%" height="100%" backgroundColor="#cdcdcd">
            <mx:Label text="Stack 2" />
            <mx:Box backgroundColor="green" width="20" height="20" />
        </mx:VBox>
    </mx:Canvas>

</mx:WindowedApplication>