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  1. #1
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    flash media server - text chat

    So I get this error when I test the following code:

    TypeError: Error #1009: Cannot access a property or method of a null object reference.
    at TextChat/checkKey()
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at fl.controls::TextInput/handleKeyDown()

    Code:
    package {
         import fl.controls.TextArea;
         import fl.controls.Button;
         import fl.controls.TextInput;
         import flash.display.Sprite;
         import flash.events.SyncEvent;
         import flash.events.NetStatusEvent;
         import flash.events.MouseEvent;
         import flash.events.FocusEvent;
         import flash.net.SharedObject;
         import flash.net.NetConnection;
         import fl.events.ComponentEvent;
         public class TextChat extends Sprite {
               private var button:Button;
               private var text_so:SharedObject;
               private var nc:NetConnection;
               private var textArea:TextArea;
               private var textInput:TextInput;
               private var chatName:TextInput;
               private var rtmpGo:String;
               private var good:Boolean;
               private var catchKey:Boolean;
               private var noName:Boolean;
               public function TextChat() {
                    //Set up UIs
                    textArea=new TextArea();
                    textArea.setSize(500,280);
                    textArea.move(20,54);
                    addChild(textArea);
                    textInput=new TextInput();
                    textInput.setSize(500,24);
                    textInput.move(20,340);
                    textInput.addEventListener(Com ponentEvent.ENTER,checkKey);
                    addChild(textInput);
                    button=new Button();
                    button.width=50;
                    button.label="Send";
                    button.move(20,370);
                    button.addEventListener(MouseE vent.CLICK,sendMsg);
                    addChild(button);
                    chatName=new TextInput;
                    chatName.setSize(100,24);
                    chatName.move(80, 370);
                    chatName.text="<Enter Name>";
                    chatName.addEventListener(Focu sEvent.FOCUS_IN,cleanName);
                    addChild(chatName);
                    rtmpGo = "rtmp://192.168.0.11/basicSO";
                    nc = new NetConnection( );
                    nc .connect(rtmpGo);
                    nc .addEventListener(NetStatusEvent.NET_STATUS,doSO);
               }
               private function doSO(e:NetStatusEvent):void {
                    good=e.info.code == "NetConnection.Connect.Success";
                    if (good) {
                          //Set up shared object
                          text_so=SharedObject.getRemote("test",nc.uri,false);
                          text_so.connect(nc);
                          text_so.addEventListener(SyncEvent.SYNC,checkSO);
                     }
               }
               private function checkSO(e:SyncEvent):void {
                    for (var chng:uint; chng<e.changeList.length; chng++) {
                          switch (e.changeList[chng].code) {
                               case "clear" :
                                     break;
                               case "success" :
                                     break;
                               case "change" :
                                     textArea.appendText(text_so.data.msg + "\n");
                                     break;
                          }
                     }
               }
               private function cleanName(e:FocusEvent):void {
                    chatName.text="";
               }
               private function sendMsg(e:MouseEvent):void {
                    noName=(chatName.text=="<En ter Name>" || chatName.text=="");
                    if (noName) {
                          textArea.appendText("You must enter your name \n");
                    } else {
                          text_so.setProperty("msg",chatName.text +": "+ textInput.text);
                          textArea.appendText(chatName.text +": "+textInput.text + "\n");
                          textInput.text="";
                     }
               }
               private function checkKey(e:ComponentEvent):void {
                    noName=(chatName.text=="<En ter Name>" || chatName.text=="");
                    if (noName) {
                          textArea.appendText("You must enter your name \n");
                    } else {
                          text_so.setProperty("msg",chatName.text +": "+ textInput.text);
                          textArea.appendText(chatName.text +": "+textInput.text + "\n");
                          textInput.text="";
                     }
               }
         }
    }

  • #2
    New Coder
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    Which line is the error in as the error code alone is not very helpfull.

  • #3
    Senior Coder gnomeontherun's Avatar
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    Did you write this or buy it? Is there more to this besides this little snippet? Could you just zip the original FLA and post it so we can better test?

    Also this is AS3...
    jeremy - gnomeontherun
    Educated questions often get educated answers, and simple questions often get simple answers.

  • #4
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    Influxis is a specialist hosting and support provider for applications using the Adobe Flash Media Server.

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