Flex4 无法显示 Sprite，Shape，SimpleButton，TextField等显示对象，不知为何？能看下不

[liang07118916]

<?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" creationComplete="onInit()">
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>
<fx:Script>
<![CDATA[

import mx.core.UIComponent;

private var mainUi:UIComponent;
/**
* 主要显示对象，继承至displayobject类
*/
private var shape:Shape;
private var simpleBtn:SimpleButton;
private var textField:TextField;
private var sprite:Sprite;

/**
* 初始化显示对象
*/
private function onInit():void {
mainUi = new UIComponent();
mainUi.x = mainUi.y = 0;
mainUi.percentHeight = mainUi.percentWidth = 100;
this.addElement(mainUi);

shape = new Shape();
shape.x = 310;
shape.y = 0;
shape.width = shape.height = 100;
shape.graphics.beginFill(0x00FF00);
shape.graphics.drawCircle(0, 0, 20);
shape.graphics.endFill();
mainUi.addChild(shape);

simpleBtn = new SimpleButton();
simpleBtn.x = 0;
simpleBtn.y = 500;
simpleBtn.width = 80;
simpleBtn.height = 30;
mainUi.addChild(simpleBtn);

textField = new TextField();
textField.text = "123";
textField.x = 200;
textField.y = 500;
textField.width = 120;
textField.height = 30;
mainUi.addChild(textField);

sprite = new Sprite();
sprite.x = 200;
sprite.y = 200;
sprite.width = shape.height = 100;
sprite.graphics.beginFill(0x00FF00);
sprite.graphics.drawRect(0, 0, 50, 50);
sprite.graphics.endFill();
mainUi.addChild(sprite);
}
]]>
</fx:Script>

</s:Application>

[passself]

楼主没有把这些组件放到住mxml中吧，要不不会一个都不显示，你只是生成了，但是并没有添加

[jwxkk]

找到问题了，原因是你drawCircle函数的参数确定的值在之前被定义了引起的冲突，注释了就好了

<?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" creationComplete="onInit()">
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
	<fx:Script>
		<![CDATA[
			
			import mx.core.UIComponent;
			
			private var mainUi:UIComponent;
			/**
			 * 主要显示对象，继承至displayobject类
			 */  
			private var shape:Shape;
			private var simpleBtn:SimpleButton;
			private var textField:TextField;
			private var sprite:Sprite;
			
			/**
			 * 初始化显示对象
			 */  
			private function onInit():void {
				mainUi = new UIComponent();
				mainUi.x = mainUi.y = 0;
				mainUi.percentHeight = mainUi.percentWidth = 100;
				this.addElement(mainUi);
				
				shape = new Shape();
				//shape.x = 310;
				//shape.y = 0;
				//shape.width = shape.height = 100;
				shape.graphics.beginFill(0x00FF00);
				shape.graphics.drawCircle(0, 0, 20);
				shape.graphics.endFill();
				mainUi.addChild(shape);
				
				simpleBtn = new SimpleButton();
				simpleBtn.x = 0;
				simpleBtn.y = 100;
				simpleBtn.width = 80;
				simpleBtn.height = 30;
				mainUi.addChild(simpleBtn);
				
				textField = new TextField();
				textField.text = "123";
				textField.x = 200;
				textField.y = 500;
				textField.width = 120;
				textField.height = 30;
				mainUi.addChild(textField);
				
				sprite = new Sprite();
				//sprite.x = 200;
				//sprite.y = 200;
				//sprite.width = shape.height = 100;
				sprite.graphics.beginFill(0x00FF00);
				sprite.graphics.drawRect(0, 0, 50, 50);
				sprite.graphics.endFill();
				mainUi.addChild(sprite);
			}
		]]>
	</fx:Script>
	
</s:Application>

[liang07118916]

谢谢回复，呵呵

[jwxkk]

<?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" creationComplete="onInit()">
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
	<fx:Script>
		<![CDATA[
			/**
			 * 主要显示对象，继承至displayobject类
			 */  
			private var shape:Shape;
			private var simpleBtn:SimpleButton;
			private var textField:TextField;
			private var sprite:Sprite;
			
			/**
			 * 初始化显示对象
			 */  
			private function onInit():void {

				textField = new TextField();
				textField.text = "123";
				textField.x = 0;
				textField.y = 0;
				textField.width = 120;
				textField.height = 30;
				videoHolder.addChild(textField);
				

			}
		]]>
	</fx:Script>
	
	
	
	<s:SpriteVisualElement id="videoHolder" width="100%"
						   height="100%"/>
	
</s:Application>