Flex 例子

http://blog.csdn.net/sjz168/article/details/6980892

1，设置鼠标样式

//设置鼠标为忙：
cursorManager.setBusyCursor();
//设置鼠标为手：
useHandCursor="true"  
buttonMode="true"
mouseChildren="false" 

2，引入外部字体：

[Embed(source="verdana.ttf",fontName='rotateFont',mimeType='application/x-font'
)] 
private var rotateFont:Class;

public function getApplicationVariable(key:String):String
{
var returnValue:String = "";
if (Application.application.parameters.hasOwnProperty(key))
{
returnValue = Application.application.parameters[key];
}
return returnValue;
}

public static function getQueryParameters():Object
{
<span style="white-space:pre">	</span>var queryString:String;
<span style="white-space:pre">	</span>try{
<span style="white-space:pre">		</span>queryString= ExternalInterface.call("window.location.search.substring");
<span style="white-space:pre">	</span>}catch(error:Error)
<span style="white-space:pre">	</span>{
<span style="white-space:pre">		</span>logger.error("Error while getting query string",error);
<span style="white-space:pre">	</span>}
<span style="white-space:pre">	</span>if( queryString)
<span style="white-space:pre">	</span>{
<span style="white-space:pre">		</span>if( queryString.charAt(0) == '?' )
<span style="white-space:pre">			</span>queryString = queryString.substr(1);
<span style="white-space:pre">		</span>var loc = queryString.indexOf("#");
<span style="white-space:pre">		</span>if( loc >=0 )
<span style="white-space:pre">			</span>queryString = queryString.substr(0,loc);
<span style="white-space:pre">		</span>queryNameValue = URLUtil.stringToObject(queryString,"&");
<span style="white-space:pre">	</span>}
<span style="white-space:pre">	</span>else
<span style="white-space:pre">		</span>queryNameValue = new Object();
<span style="white-space:pre">	</span>return queryNameValue;
}

5，String和Object互转：

var s:String = "name=Alex&age=21";
var o:Object = URLUtil.stringToObject(s,"&",true);
Returns the object:?{ name: "Alex",age: 21 }

var o:Object = { name: "Alex",age: 21 };
var s:String = URLUtil.objectToString(o,true);
trace(s);
Prints "name=Alex&age=21" to the trace log.
6，判断是否是上线，还是本地调试：
public static function isOnServer():Boolean
{
	var url:String;
	try{
		url= ExternalInterface.call("window.location.href.toString");
	}catch (error:Error)
	{
		logger.error("Error while getting launch url",error);	
	}
	if(url)
	{
		var server:String = URLUtil.getServerName(url);
		return (server != "localhost") ? false : true;
	}
	else
		return false;
	
}

7，获取浏览器地址：
var url:String = Application.application.systemManager.stage.loaderInfo.url;

8，异步访问解耦：
var responder:IResponder = new Responder(success,fault);
var asyncToken:AsyncToken = httpService.send();
asyncToken.addResponder(responder);
9，confirm弹出框：
Alert.show("提示内容","提示标题",Alert.OK|Alert.CANCEL,null,function(e:CloseEvent):void{
    if(e.detail
 == Alert.OK)
    {
        Alert.show("你点击了确定");
    }
    else if(e.detail
 == Alert.CANCEL)
    {
        Alert.show("你点击了取消");
    }
});
flags属性可以以下类型的任意一种：
1- Alert.YES
2- Alert.NO
3- Alert.YES | Alert.NO
4- Alert.OK
5- Alert.OK | Alert.YES
6- Alert.OK | Alert.NO
7- Alert.OK | Alert.YES | Alert.NO
8- Alert.CANCEL
9- Alert.YES | Alert.CANCEL
10- Alert.NO | Alert.CANCEL
11- Alert.YES | Alert.NO | Alert.CANCEL
12- Alert.OK | Alert.CANCEL
13- Alert.OK | Alert.YES | Alert.CANCEL
14- Alert.OK | Alert.NO | Alert.CANCEL
15- Alert.OK | Alert.YES | Alert.NO | Alert.CANCEL
16- Alert.OK （和4一样）
如果不填写flags，默认为4，即只有“确定”按钮
10，调用JS
通过ExternalInterface.call可以调用js中的对象，如dom对象，如：
var log : String = ExternalInterface.call("function(){return navigator.appVersion+'-'+navigator.appName;}") +"n";

11， 日志
tracePanelTarget = new TracePanelTarget();
tracePanelTarget.filters=["dcs.*","components.*","com.*","util.*"];  //"flex-iframe",//tracePanelTarget.level = isProduction?LogEventLevel.INFO:LogEventLevel.ALL;
tracePanelTarget.level =0;
tracePanelTarget.includeDate = true;
tracePanelTarget.includeTime = true;				
tracePanelTarget.includeCategory = true;
tracePanelTarget.includeLevel = true;
Log.addTarget(tracePanelTarget);
Log.getLogger('components.custom.logger.LoggerConfig').info("Logging initialized.");

12，item render
public class SomeRenderer extends Label {
	
	private var _adg:AdvancedDataGrid;
	private var _column:AdvancedDataGridColumn;AdvancedDataGrid


	public function HotLinkItemRenderer(){
		this.addEventListener(MouseEvent.CLICK,hotLinkClick);
	}
	protected function hotLinkClick(event:MouseEvent):void
	{
		if(this.text != "0" && _column){
			var hotLinkClickEvent:HotLinkClickEvent = new HotLinkClickEvent(HotLinkClickEvent.type);
			hotLinkClickEvent.advancedDataGridColumn = AdvancedDataGridColumn(_column);
			hotLinkClickEvent.rowIndex = this.listData.rowIndex;
			hotLinkClickEvent.columnIndex = this.listData.columnIndex;
			hotLinkClickEvent.text = this.text;
			hotLinkClickEvent.rowData = this.data;
			this._adg.dispatchEvent(hotLinkClickEvent);
		}
	}
	
	override public function set listData(value:BaseListData):void {  
		if(value){
			super.listData = value;
			_adg = AdvancedDataGrid(listData.owner);
			_column = listData ? AdvancedDataGrid(listData.owner).columns[listData.columnIndex] : null;
		}
	}  
	
	override public function set data(value:Object):void{
		super.data = value;
		if(this.text != "0"){
			this.setStyle('textDecoration','underline');
			this.useHandCursor = true;
			this.buttonMode = true;
			this.mouseChildren=false; 
		}else{
			this.setStyle('textDecoration','none');
			this.useHandCursor = false;
			this.buttonMode = false;
			this.mouseChildren=true; 
		}
	}
		
	}
}