PopUpManager--createPopUp与addPopUp区别

最新推荐文章于 2021-02-13 17:19:24 发布

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本文介绍如何使用Flex框架创建自定义弹出窗口（TitleWindow），包括两种方法：一是直接创建TitleWindow并设置属性，二是先设置弹出方式再创建TitleWindow对象。这两种方法在实现弹窗时有不同的顺序。

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Java代码

<?xml version= "1.0" encoding= "utf-8" ?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white"
creationComplete="init()" >
<mx:Script>
<![CDATA[
import mx.controls.Label;
import mx.events.CloseEvent;
import mx.containers.TitleWindow;
import mx.managers.PopUpManager ;
private var titleWindow:TitleWindow;
private function init(): void {
var label:Label = new Label();
label.text = "Hello world" ;
titleWindow = new TitleWindow();
titleWindow.title = "Custom title" ;
titleWindow.showCloseButton = true ;
titleWindow.width = 240 ;
titleWindow.height = 180 ;
titleWindow.addEventListener(CloseEvent.CLOSE, titleWindow_close);
titleWindow.addChild(label);
PopUpManager .addPopUp(titleWindow, this , true );
PopUpManager .centerPopUp(titleWindow);
}
private function titleWindow_close(evt:CloseEvent): void {
PopUpManager .removePopUp(titleWindow);
}
]]>
</mx:Script>
<mx:Button label="Launch TitleWindow" click= "init()" />
</mx:Application>

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white"
        creationComplete="init()">

    <mx:Script>
        <![CDATA[
            import mx.controls.Label;
            import mx.events.CloseEvent;
            import mx.containers.TitleWindow;
            import mx.managers.PopUpManager

;

            private var titleWindow:TitleWindow;

            private function init():void {
                var label:Label = new Label();
                label.text = "Hello world";

                titleWindow = new TitleWindow();
                titleWindow.title = "Custom title";
                titleWindow.showCloseButton = true;
                titleWindow.width = 240;
                titleWindow.height = 180;
                titleWindow.addEventListener(CloseEvent.CLOSE, titleWindow_close);
                titleWindow.addChild(label);

                PopUpManager

.addPopUp(titleWindow, this, true);
                PopUpManager

.centerPopUp(titleWindow);
            }

            private function titleWindow_close(evt:CloseEvent):void {
                PopUpManager

.removePopUp(titleWindow);
            }
        ]]>
    </mx:Script>

    <mx:Button label="Launch TitleWindow" click="init()" />

</mx:Application>

createPopUp 代码：

Java代码

<?xml version= "1.0" encoding= "utf-8" ?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white"
creationComplete="init()" >
<mx:Script>
<![CDATA[
import mx.managers.PopUpManagerChildList;
import mx.controls.Label;
import mx.events.CloseEvent;
import mx.containers.TitleWindow;
import mx.managers.PopUpManager ;
private var titleWindow:TitleWindow;
private function init(): void {
var label:Label = new Label();
label.text = "Hello world" ;
titleWindow = new TitleWindow();
titleWindow = TitleWindow(PopUpManager .createPopUp (this ,TitleWindow, true ));
titleWindow.title = "Custom title" ;
titleWindow.showCloseButton = true ;
titleWindow.width = 240 ;
titleWindow.height = 180 ;
titleWindow.addChild(label);
titleWindow.addEventListener(CloseEvent.CLOSE, titleWindow_close);
PopUpManager .centerPopUp(titleWindow);
}
private function titleWindow_close(evt:CloseEvent): void {
PopUpManager .removePopUp(titleWindow);
}
]]>
</mx:Script>
<mx:Button label="Launch TitleWindow" click= "init()" />
</mx:Application>

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white"
        creationComplete="init()">

    <mx:Script>
        <![CDATA[
        	import mx.managers.PopUpManagerChildList;
            import mx.controls.Label;
            import mx.events.CloseEvent;
            import mx.containers.TitleWindow;
            import mx.managers.PopUpManager

;

            private var titleWindow:TitleWindow;

            private function init():void {
                var label:Label = new Label();
                label.text = "Hello world";
                titleWindow = new TitleWindow();
				titleWindow = TitleWindow(PopUpManager

.createPopUp

(this,TitleWindow,true));
				titleWindow.title = "Custom title";
                titleWindow.showCloseButton = true;
                titleWindow.width = 240;
                titleWindow.height = 180;
				titleWindow.addChild(label);
                titleWindow.addEventListener(CloseEvent.CLOSE, titleWindow_close);
                               PopUpManager

.centerPopUp(titleWindow);
            }

            private function titleWindow_close(evt:CloseEvent):void {
                PopUpManager

.removePopUp(titleWindow);
            }
        ]]>
    </mx:Script>

    <mx:Button label="Launch TitleWindow" click="init()" />

</mx:Application>

createPopUp :是上来先设置好弹出方式，然后在new出来一个TitleWindow的对象，然后通过此对象设置他的变现形式。

addPopUp：是先new出来对象，设置好表现形式，然后在选择弹出来的方式。

一定要注意new对象与弹出方式的先后顺序。