ActionScript

Flex: 使用URLRequest下载文件时的权限验证

Categories: Flex; Tagged with: ActionScript • FileReference • Flex • URLRequest; @ January 27th, 2010 23:49

权限验证:

var fileRef:FileReference = new FileReference();
		var request:URLRequest = new URLRequest(serviceUrl);

		request.method = URLRequestMethod.POST;
		var encoder : Base64Encoder = new Base64Encoder();
		encoder.encode(userName + ":" + password);
		request.requestHeaders.push(new URLRequestHeader("Authorization", "Basic " + encoder.toString())); // ** 增加认证信息

		fileRef.addEventListener(Event.OPEN, onFileDownloadBegin);
		fileRef.addEventListener(Event.COMPLETE, onFileDownloadComplete);
		fileRef.addEventListener(IOErrorEvent.IO_ERROR, onFileDownloadError);
		fileRef.addEventListener(Event.CANCEL, onFileDownLoadCancel);
		fileRef.download(request, getExportFileName(serviceUrl));

Flex: 使用URLRequest进行下载, 并监听有关事件

Categories: Flex; Tagged with: ActionScript • DownLoad • Flex • URLRequest; @ January 27th, 2010 23:46

使用URLRequest下载文件. – 无权限认证

// 下载文件
	protected function downloadTemplateFile():void {
		var fileRef:FileReference = new FileReference();
		var urlReq:URLRequest = new URLRequest(_pathTemplateFile);
		fileRef.addEventListener(Event.OPEN,onDownloadBegin);
		fileRef.addEventListener(Event.COMPLETE, onDownloadComplete);
		fileRef.addEventListener(Event.CANCEL, onDownloadCancel);
		fileRef.addEventListener(IOErrorEvent.IO_ERROR, onDownloadError);
		fileRef.download(urlReq);
	}

	// 模板文件下载开始时响应.
	protected function onDownloadBegin(e:Event):void {
		appendTextToOutPut(RM.getString(BUNDLE_ASMT_MGT, "template.download.begin"));
	}

	// 当下载结束后响应. */
	protected function onDownloadComplete(e:Event):void {
		var file:FileReference = e.target as FileReference;
		appendTextToOutPut(RM.getString(BUNDLE_ASMT_MGT, "template.download.success", [file.name, FileUtils.formatFileSize(file.size)]));
		log.info("模板文件下载结束: " + file.name + "-" + file.size);
	}

	// 当下载取消时响应. */
	protected function onDownloadCancel(e:Event):void {
		appendTextToOutPut(RM.getString(BUNDLE_ASMT_MGT, "controller.download.canceled"));
	}

	// 当下载出现错误时响应. */
	protected function onDownloadError(e:IOError):void {
		appendTextToOutPut(RM.getString(BUNDLE_ASMT_MGT, "template.download.error", [e.message]));
		log.error("下载出错" + e.message);
	}

Flex: 设定Chart的顶点样式

Categories: Flex; Tagged with: ActionScript • Chart • Chart Style • Flex • LineChart; @ January 27th, 2010 23:07

代码

lineSeries.setStyle("itemRenderer", new ClassFactory(mx.charts.renderers.CircleItemRenderer));

效果:

Flex: 运行Application出现URI is not absolute错误的解决方法

Categories: Flex; Tagged with: ActionScript • Application • Flex; @ January 26th, 2010 9:10

Application已经改动, 但仍使用了运行中的旧有Application, 因此会出现该错误.

解决方法: 点击Application, run(debug) as, 而不是直接点击run 或 debug中的记录.

Flex:使用direction控制TileList的显示方向

Categories: Flex; Tagged with: ActionScript • Flex • TileBase • TileList; @ January 21st, 2010 18:11

TileBase.direction

属性

direction:String [读写]

此控件布置其子控件的方向。可能的值为 TileBaseDirection.HORIZONTAL 和 TileBaseDirection.VERTICAL。默认值为 TileBaseDirection.HORIZONTAL。

如果值为 TileBaseDirection.HORIZONTAL，则将沿第一行布置拼贴直至达到可见的列数或 maxColumns，然后再填充新行。如果创建的行数多于一次能够显示的行数，控件将显示垂直 scrollbar。如果值为 TileBaseDirection.VERTICAL，情况相反。

此属性可用作数据绑定的源。修改此属性后，将调度 directionChanged 事件。

Pasted from <http://livedocs.adobe.com/flex/3_cn/langref/mx/controls/listClasses/TileBase.html#direction>

如下图, 展示了一个竖排的TileList

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