自己平时写的一些小例子

<?xml version="1.0" encoding="utf-8"?> <mx:Window xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" title="单聊" name="windows" initialize="init()" width="400" height="350"> <mx:Script> <![CDATA[ import mx.events.FlexEvent; import mx.formatters.DateFormatter; import mx.charts.chartClasses.DataDescription; import mx.controls.Alert; import AppCore.DataService; private var ds:DataService; //数据库的连接 private var _senduserID:String =""; [Bindable] private var _receiveuserID:String =""; private var today:Date; private var formatted:String=""; private var times:Timer; private var outPutValue:String=""; [Bindable] private var txtReceiveMessage:String=""; [Bindable] private var sendUserName:String=""; [Bindable] private var receiveUserName:String=""; private var _username:String=""; private function init():void { ds=new DataService(); times=new Timer(2000); times.addEventListener(TimerEvent.TIMER,timerHandle); times.start(); exchangeReceiveIDName(); btnSend.addEventListener(MouseEvent.CLICK,btnSendClickHandle); btnClose.addEventListener(MouseEvent.CLICK,btnCloseHandle); btnChat.addEventListener(MouseEvent.CLICK,btnChatClickHandle); imDetail.addEventListener(FlexEvent.VALUE_COMMIT,onValueCommit); } private function onValueCommit(event:Event):void { imDetail.verticalScrollPosition=imDetail.maxVerticalScrollPosition; } private function btnChatClickHandle(event:MouseEvent):void { var chathistory:ChatHistory=new ChatHistory(); chathistory.sendUserID=_senduserID; chathistory.receiveUserID=_receiveuserID; Alert.show(chathistory.sendUserID.toString()); Alert.show(chathistory.receiveUserID.toString()); chathistory.open(); } private function exchangeSendIDName():void { ds.getData("select * from T_USERSINFO where USERID='"+_senduserID+"'",callback,"getSendUserName");//得到发送人的姓名 } private function exchangeReceiveIDName():void { ds.getData("select * from T_USERSINFO where USERID='"+_receiveuserID+"'",callback,"getReceiveUserName"); //得到收信人姓名 } private function btnCloseHandle(event:MouseEvent):void { this.close(); } private function timerHandle(event:TimerEvent):void { ds.getData("select * from T_CHATLOGS where STATES=0 and RECEIVEUSERID='"+_senduserID+"'",callback,"getMessage"); } private function callback(data:XMLList,token:String):void { switch(token) { case "getMessage": if(data.toString()!="") { var items:XML; for each(items in data) { //dateFormatter.format(items.SENDTIME) var date:String=items.SENDTIME; outPutValue=receiveUserName+" "+date.substring(0,10)+" "+date.substring(11,19)+"\n"+items.CONTENS+"\n"; txtReceiveMessage+=outPutValue; changeFlag(items.CHARID); } } break; case "getSendUserName": sendUserName=data.USERNAME; sendMessage(); break; case "getReceiveUserName": receiveUserName=data.USERNAME; break; } } private function changeFlag(charid:int):void { ds.execSQL("update T_CHATLOGS set STATES=1 where CHARID='"+charid+"'",changeFlagcallback); function changeFlagcallback():void { } } private function btnSendClickHandle(event:MouseEvent):void { var dateFormatter:DateFormatter=new DateFormatter(); dateFormatter.formatString="YYYY-MM-DD JJ:NN:SS"; today=new Date(); formatted=dateFormatter.format(today); //formatted=today.fullYear+"-"+today.month+"-"+today.date+" "+today.hours+":"+today.minutes+":"+today.seconds; exchangeSendIDName(); } private function sendMessage():void { if(txtSend.text=="") { Alert.show("发送消息不能空！","提示"); } else { ds.execSQL("insert into T_CHATLOGS values('"+_senduserID+"','"+_receiveuserID+"','"+txtSend.text+"','"+formatted+"','0')",sendcallback); function sendcallback():void { txtReceiveMessage+=sendUserName+" "+formatted+"\n"+txtSend.text+"\n"; txtSend.text=""; } } } public function get senduserID():String { return _senduserID; } public function set senduserID(value:String):void { _senduserID=value; } public function get receiveuserID():String { return _receiveuserID; } public function set receiveuserID(value:String):void { _receiveuserID=value; } ]]> </mx:Script> <mx:Label x="0" y="0" text="与{receiveUserName} 聊天中" width="140" height="28" fontSize="14"/> <mx:TextArea left="-0.5" right="0" top="26" bottom="129" id="imDetail" text="{txtReceiveMessage}" editable="false" fontSize="14"/> <mx:TextArea y="204" height="90" id="txtSend" left="-0.5" right="0" fontSize="14"/> <mx:Button y="296" label="关闭" id="btnClose" right="5" width="75"/> <mx:Button y="296" label="发送" width="69" id="btnSend" right="88"/> <mx:Button y="296" label="聊天记录" width="74" left="0" id="btnChat"/> </mx:Window>