弹性状态转换

Question

我正在尝试创建状态之间的转换。第一个状态转换工作正常（state1=>state2），但第二个状态转换很奇怪（state2=>state3）。点击按钮更改后 state2=>state3，一些属于 state2 的文本区域会显示并停留在屏幕上。我不确定为什么。如果这里有人可以帮助我，我将不胜感激。

我的代码。

<?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" 
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">

    <fx:Script>
        <![CDATA[
            protected function btn1_clickHandler(event:MouseEvent):void
            {
                currentState="state2";
            }

            protected function btn2_clickHandler(event:MouseEvent):void
            {
                currentState="state3";
            }



        ]]>
    </fx:Script>

    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>





    <s:states>
        <s:State name="state1"/>
        <s:State name="state2"/>
        <s:State name="state3"/>
    </s:states>


    <s:transitions>

        <s:Transition toState="state2" >
            <s:Parallel>

            <s:Move targets="{[btn1,btn2]}" />
            <s:AddAction targets="{[label1,label2,label3,textInput1,textInput2,textInput3]}" /> 
            <s:Fade targets="{[label1,label2,label3,textInput1,textInput2,textInput3]}"/>

            </s:Parallel>

        </s:Transition>
        <s:Transition toState="state3" >
            <s:Fade targets="{[label1,label2,label3,textInput1,textInput2,textInput3]}"/>

        </s:Transition>

    </s:transitions>


    <s:Label y="10" text="label1" id="label1" includeIn="state2" />
    <s:TextInput y="30" id="textInput1" includeIn="state2" />
    <s:Label y="50" text="label1" id="label2" includeIn="state2" />
    <s:TextInput y="70" id="textInput2" includeIn="state2" />
    <s:Label y="90" text="label1" id="label3" includeIn="state2" />
    <s:TextInput y="120" id="textInput3" includeIn="state2" />



    <s:Button y="180" y.state2="350" label="btn1" id="btn1" click="btn1_clickHandler(event)"/>
    <s:Button y="250" y.state2="550" label="btn2" id="btn2" click="btn2_clickHandler(event)"/>



</s:Application>

Answer 1

您的代码示例看起来不完整。我认为我们需要看到的不仅仅是状态和转换。如果您可以提供一个完整的运行示例，这将很有帮助。

我认为这是一个示例问题，但在您当前的代码中，文档中没有创建到状态的转换。由于您有三个状态，您可能想要添加一个“fromState”并明确设计从/到每个状态的转换。

如果我不得不猜测，您可能需要在相关组件上指定“includeIn”属性。您可以使用逗号分隔的状态列表，如下所示：

<s:Component includeIn="a" />
<s:Component includeIn="b,c" />
<s:Component includeIn="a,c" />

第一个组件出现在状态 a，第二个出现在状态 b 和 c，第三个组件出现在状态 a 和 c。

---

更新海报代码：

    <?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" 
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">

    <fx:Script>
        <![CDATA[
            protected function btn1_clickHandler(event:MouseEvent):void
            {
                currentState="state2";
            }

            protected function btn2_clickHandler(event:MouseEvent):void
            {
                currentState="state3";
            }



        ]]>
    </fx:Script>

    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>



    <s:states>
        <s:State name="state1"/>
        <s:State name="state2"/>
        <s:State name="state3"/>
    </s:states>


    <s:transitions>

        <s:Transition toState="state2" >
            <s:Parallel>

                <s:Move targets="{[btn1,btn2]}" />
                <!--<s:AddAction targets="{[label1,label2,label3,textInput1,textInput2,textInput3]}" /> -->
                <s:Fade targets="{[label1,label2,label3,textInput1,textInput2,textInput3]}" alphaFrom="0" alphaTo="1"/>

            </s:Parallel>

        </s:Transition>
        <s:Transition toState="state3" >
            <s:Parallel>
<!--                <s:Move targets="{[btn1,btn2]}" />-->
                <!--<s:RemoveAction targets="{[label1,label2,label3,textInput1,textInput2,textInput3]}" /> -->
                <s:Fade targets="{[label1,label2,label3,textInput1,textInput2,textInput3]}" alphaFrom="1" alphaTo="0"/>
            </s:Parallel>

        </s:Transition>

    </s:transitions>


    <s:Label y="10" text="label1" id="label1" includeIn="state2" />
    <s:TextInput y="30" id="textInput1" includeIn="state2" />
    <s:Label y="50" text="label2" id="label2" includeIn="state2" />
    <s:TextInput y="70" id="textInput2" includeIn="state2" />
    <s:Label y="90" text="label3" id="label3" includeIn="state2" />
    <s:TextInput y="120" id="textInput3" includeIn="state2" />



    <s:Button y="180" y.state2="350" includeIn="state1,state2,state3" label="To State 2" id="btn1" click="btn1_clickHandler(event)"/>
    <s:Button y="250" y.state2="550" includeIn="state1,state2,state3" label="To State 3" id="btn2" click="btn2_clickHandler(event)"/>



</s:Application>