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我们将使用Flash Builder 4.5创建Flex应用程序。 让我们从一个简单的 HelloWorld 应用程序开始: 步骤1 - 创建项目第一步是使用Flash Builder IDE创建一个简单的Flex项目。 使用选项File > New > Flex Project。 现在,使用向导窗口将您的项目命名为 HelloWorld ,如下所示: 如果未选择,请选择应用程序类型 Web(在Adobe Flash Player中运行),并保留其他默认值,然后单击完成按钮。 项目创建成功后,您的项目资源管理器中将包含以下内容: 以下是所有重要文件夹的简要说明:
步骤2 - 创建外部CSS文件在 html-template 文件夹中为Wrapper HTML页面创建CSS文件 styles.css 。 html, body { height:100%; } body { margin:0; padding:0; overflow:auto; text-align:center; } object:focus { outline:none; } #flashContent { display:none; } .pluginHeader { font-family:Arial, Helvetica, sans-serif; font-size:14px; color:#9b1204; text-decoration:none; font-weight:bold; } .pluginInstallText { font-family:Arial, Helvetica, sans-serif; font-size:12px; color:#000000; line-height:18px; font-style:normal; } .pluginText { font-family:Arial, Helvetica, sans-serif; font-size:12px; color:#000000; line-height:18px; font-style:normal; } 步骤3 - 修改包装HTML页面模板在 html-template 文件夹中修改封装HTML页面模板 index.template.html 。 Flash Builder将创建一个默认的Wrapper HTML网页模板 html-template / index.template.html ,它将被编译为HelloWorld.html。 此文件包含Flash Builder在编译过程中替换的占位符,例如Flash Player版本,应用程序名称等。 让我们修改此文件以显示自定义消息,如果没有安装flash插件。 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>${title}</title> <meta name="google" value="notranslate" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" href="styles.css" type="text/css"></link> <link rel="stylesheet" type="text/css" href="history/history.css" /> <script type="text/javascript" table table-bordered="history/history.js"></script> <script type="text/javascript" table table-bordered="swfobject.js"></script> <script type="text/javascript"> // For version detection, set to min. required Flash Player version, //or 0 (or 0.0.0), for no version detection. var swfVersionStr = "${version_major}.${version_minor}.${version_revision}"; // To use express install, set to playerProductInstall.swf, //otherwise the empty string. var xiSwfUrlStr = "${expressInstallSwf}"; var flashvars = {}; var params = {}; params.quality = "high"; params.bgcolor = "${bgcolor}"; params.allowscriptaccess = "sameDomain"; params.allowfullscreen = "true"; var attributes = {}; attributes.id = "${application}"; attributes.name = "${application}"; attributes.align = "middle"; swfobject.embedSWF( "${swf}.swf", "flashContent", "${width}", "${height}", swfVersionStr, xiSwfUrlStr, flashvars, params, attributes); // JavaScript enabled so display the flashContent div in case //it is not replaced with a swf object. swfobject.createCSS("#flashContent", "display:block;text-align:left;"); </script> </head> <body> <div id="flashContent"> <p style="margin:100px;"> <table width="700" cellpadding="10" cellspacing="2" border="0"> <tr><td class="pluginHeader">Flash Player Required</td></tr> <tr><td class="pluginText">The Adobe Flash Player version 10.2.0 or greater is required.</td></tr> <tr><td class = "pluginInstallText" align="left"> <table border="0" width="100%"> <tr class = "pluginInstallText" > <td>Click here to download and install Adobe Flash Player:</td> <td> </td> <td align="right"> <script type="text/javascript"> var pageHost =((document.location.protocol == "https:") ? "https://" : "http://"); document.write("<a target='_blank'" +" href='http://get.adobe.com/flashplayer/'><" +"img style='border-style: none' table table-bordered='" +pageHost +"www.adobe.com/images/shared/download_buttons/get_flash_player.gif'" +" alt='Get Adobe Flash player' /></a>" ); </script> </td> </tr> </table> </td> </tr> </table> </p> </div> <noscript> <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="${width}" height="${height}" id="${application}"> <param name="movie" value="${swf}.swf" /> <param name="quality" value="high" /> <param name="bgcolor" value="${bgcolor}" /> <param name="allowScriptAccess" value="sameDomain" /> <param name="allowFullScreen" value="true" /> <!--[if !IE]>--> <object type="application/x-shockwave-flash" data="${swf}.swf" width="${width}" height="${height}"> <param name="quality" value="high" /> <param name="bgcolor" value="${bgcolor}" /> <param name="allowScriptAccess" value="sameDomain" /> <param name="allowFullScreen" value="true" /> <!--<![endif]--> <!--[if gte IE 6]>--> <p> <p style="margin:100px;"> <table width="700" cellpadding="10" cellspacing="2" border="0"> <tr><td class="pluginHeader">Flash Player Required</td></tr> <tr><td class="pluginText">The Adobe Flash Player version 10.2.0 or greater is required.</td></tr> <tr><td class = "pluginInstallText" align="left"> <table border="0" width="100%"> <tr class = "pluginInstallText" > <td>Click here to download and install Adobe Flash Player:</td> <td> </td> <td align="right"> <script type="text/javascript"> var pageHost = ((document.location.protocol == "https:") ? "https://" : "http://"); document.write("<a target='_blank'" +" href='http://get.adobe.com/flashplayer/'><" +"img style='border-style: none' table table-bordered='" +pageHost +"www.adobe.com/images/shared/download_buttons/get_flash_player.gif'" +" alt='Get Adobe Flash player' /></a>" ); </script> </td> </tr> </table> </td> </tr> </table> </p> </p> <!--<![endif]--> <p style="margin:100px;"> <table width="700" cellpadding="10" cellspacing="2" border="0"> <tr><td class="pluginHeader">Flash Player Required</td></tr> <tr><td class="pluginText">The Adobe Flash Player version 10.2.0 or greater is required.</td></tr> <tr><td class = "pluginInstallText" align="left"> <table border="0" width="100%"> <tr class = "pluginInstallText" > <td>Click here to download and install Adobe Flash Player:</td> <td> </td> <td align="right"> <script type="text/javascript"> var pageHost = ((document.location.protocol == "https:") ? "https://" : "http://"); document.write("<a target='_blank'" +" href='http://get.adobe.com/flashplayer/'><" +"img style='border-style: none' table table-bordered='" +pageHost +"www.adobe.com/images/shared/download_buttons/get_flash_player.gif'" +" alt='Get Adobe Flash player' /></a>" ); </script> </td> </tr> </table> </td> </tr> </table> </p> <!--[if !IE]>--> </object> <!--<![endif]--> </object> </noscript> </body> </html> 步骤4 - 创建内部CSS文件在 table table-bordered / com / tutorialspoint 文件夹中为 HelloWorld.mxml 创建CSS文件 Style.css 。 Flex为其UI控件提供了类似的CSS样式,因为有HTML UI控件的CSS样式。 /* CSS file */ @namespace s "library://ns.adobe.com/flex/spark"; @namespace mx "library://ns.adobe.com/flex/mx"; .heading { fontFamily: Arial, Helvetica, sans-serif; fontSize: 17px; color: #9b1204; textDecoration:none; fontWeight:normal; } .button { fontWeight: bold; } .container { cornerRadius :10; horizontalCenter :0; borderColor: #777777; verticalCenter:0; backgroundColor: #efefef; } 步骤5 - 修改入口级类Flash Builder将创建一个默认的mxml文件 table table-bordered / com.tutorialspoint / HelloWorld.mxml ,其具有根标签< application> 容器的应用程序。 让我们修改这个文件显示“Hello,World!": <?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" width="100%" height="100%" minWidth="500" minHeight="500" initialize="application_initializeHandler(event)"> <fx:Style source="/com/tutorialspoint/client/Style.css"/> <fx:Script> <![CDATA[ import mx.controls.Alert; import mx.events.FlexEvent; protected function btnClickMe_clickHandler(event:MouseEvent):void { Alert.show("Hello World!"); } protected function application_initializeHandler(event:FlexEvent):void { lblHeader.text = "My Hello World Application"; } ]]> </fx:Script> <s:BorderContainer width="500" height="500" id="mainContainer" styleName="container"> <s:VGroup width="100%" height="100%" gap="50" horizontalAlign="center" verticalAlign="middle"> <s:Label id="lblHeader" fontSize="40" color="0x777777" styleName="heading"/> <s:Button label="Click Me!" id="btnClickMe" click="btnClickMe_clickHandler(event)" styleName="button" /> </s:VGroup> </s:BorderContainer> </s:Application> 您可以在同一源目录中创建更多的mxml或actionscript文件,以定义新应用程序或定义辅助程序。 步骤6 - 构建应用程序Flash Builder默认已选中自动构建。 只要检查问题查看是否有任何错误。 完成更改后,您将看不到任何错误。 步骤7 - 运行应用程序现在点击 运行应用程序菜单并选择 HelloWorld 应用程序来运行应用程序。 如果一切正常,您必须看到浏览器弹出和应用程序启动并运行。 如果一切顺利,您的应用程序,这将产生以下结果:[在线试用] 因为你是在flash播放器中运行你的应用程序,所以你需要为你的浏览器安装Flash Player插件。 只需按照屏幕上的说明安装插件。 如果您已经为浏览器设置了Flash Player插件,那么您应该可以看到以下输出: 恭喜! 您已使用Flex实施了第一个应用程序。 |
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