Command in canvas problem

help, i'm having trouble with commands in canvas.
i have a canvas class that implements commandListener, but my setCommandListener(this) call generates and error. it said "cannot resolve symbol: method setCommandListener(Game)". Game is my canvas class name. if i remove the setCommandListener call, but keeps the addCommand()s, it went ok. the commands are added to the canvas.
why is this happening?

i'm sorry, i dont quite get your answer.
basically, this is what i do:
public class GameCanvas extends Canvas implements CommandListener
private final Command okCommand;
private final Command optionCommand;
//constructor
public GameCanvas(Main parent){
okCommand = new Command("OK", Command.ITEM, 1);
optionCommand = new Command("Options", Command.ITEM, 1);
addCommand(okCommand);
addCommand(optionCommand);
setCommmandListener(this);
public void commandAction(Command cmd,Displayable d) {
//not yet implemented
is there anything else i need to do, cos i keep getting that error message.. thanks

Similar Messages

Command or Canvas Events for Recording ?? Please Help..

Hi I am Abhijith I am a total newbie to the j2me world, And I am learning it now,
My project topic is "Bluetooth Walkie Talkie " , And I am trying my best and putting
all my efforts to code incrementally by learning , Before I could implement bluetooth,
I thought let me complete the recording The audio and playing part first,
The recording and playing of audio is working fine , But i would like to do it a real manner as Real Walkie talkie does, I want to record audio ONLY when the Key is being
pressed , and when its released it should exit the player hence saving the recorded file,
(Actually i dont want to save it in future,i would be sending the bytearray though the bluetooth , but for now , I want the Current module to be ready)
I tried my best searching online to implement my requirement but the couldnot find
such events I found Canva's KEYPRESS, KEYRELEASE , etc events but they dint not
serve my purpose, Let me clearly tell where I am stuck , After the midlet starts(by launching it) then i would like to press a key( keypressed say No 5) for certain
amount of time and the audio should be recorded only for the keypressed duration ,
after I release , it should stop recording and save as a wav file .
Whats happening is When i keep the key pressed , The midlet asks whether to allow
the recording , for this purpose when I release key the control is going out, and
i am not able to achieve the needed , I am posting the code here, Please Help me.
I am not asking for the complete spoon feeding or ready made code, But as a beginner
I need help from you all to learn and implement it.(at least it should satisfy me,i would feel i have learnt something then)
Here below is my code ( i AM using WTK 2.5 )
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import java.io.*;
import javax.microedition.media.control.*;
import java.util.*;
import javax.microedition.io.*;
import javax.microedition.io.file.*;
public class Key extends MIDlet{
private Display display;
private KeyCodeCanvas canvas;
public Key(){
    display = Display.getDisplay(this);
    canvas = new KeyCodeCanvas(this);
protected void startApp(){
    display.setCurrent(canvas);
protected void pauseApp(){}
protected void destroyApp( boolean unconditional ){
    notifyDestroyed();
class KeyCodeCanvas extends Canvas implements CommandListener{
private Command exit;
     public StringItem message ;
     private Player player;
     private byte[] recordedAudioArray = null;
private String keyValue = null;
private Key midlet;
     Thread t = null;
     private String eventType = null;
public KeyCodeCanvas(Key midlet){
    this.midlet = midlet;
    exit = new Command("Exit", Command.EXIT, 1);
    addCommand(exit);
    setCommandListener(this);
protected void paint(Graphics g){
      g.setColor(255, 0, 0);
      g.fillRect(0, 0, getWidth(), getHeight());
    if (keyValue != null){
      g.setColor(0, 0, 255);
       g.drawString(keyValue + eventType+message, getWidth() / 2, getHeight() / 2,
     Graphics.TOP | Graphics.HCENTER);
public void commandAction(Command c, Displayable d){
    String label = c.getLabel();
    if(label.equals("Exit"))
      midlet.destroyApp(true);
protected void keyPressed(int keyCode){
     eventType = "pressed";
    keyValue = getKeyName(keyCode);
    repaint();
public void keyReleased(int keyCode)
       try
            eventType = "released";
            keyValue = getKeyName(keyCode);
            repaint();
       catch (Exception e)
            System.out.print(e);
public void keyRepeated(int keyCode)
       eventType = "repeated";
       keyValue = getKeyName(keyCode);
       try
            Thread t1 = new Thread()
                 public void run()
                      try
                           player = Manager.createPlayer("capture://audio?encoding=pcm");
                           player.realize();
                           RecordControl rc = (RecordControl)player.getControl("RecordControl");
                           ByteArrayOutputStream output = new ByteArrayOutputStream();
                           rc.setRecordStream(output);
                           rc.startRecord();
                           player.start();
                           eventType = "Recording";
                           message.setText("Recording...");
                           Thread.sleep(5000);
                           message.setText("Recording Done!");
                           rc.commit();
                           recordedAudioArray = output.toByteArray();
                           player.close();
                      catch (Exception e)
            }; t1.start();
       catch (Exception e)
       repaint();
     //Runnable r1 = new Runnable()
     //    public void run()
     //        try
     //            System.out.print(" here 1");
     //            message.setText(" here 1 ");
     //            player = Manager.createPlayer("capture://audio?encoding=pcm");
     //            player.realize();
     //            RecordControl rc = (RecordControl)player.getControl("RecordControl");
     //            ByteArrayOutputStream output = new ByteArrayOutputStream();
     //            rc.setRecordStream(output);
     //            rc.startRecord();
     //            player.start();
     //            eventType = "Recording";
     //            message.setText("Recording...");
     //            Thread.sleep(5000);
     //            message.setText("Recording Done!");
     //            rc.commit();
     //            recordedAudioArray = output.toByteArray();
     //            player.close();
     //        catch (Exception e)
}I am really sorry at the end I messed with the code and its altered a Lot, But hope the
logic Will is clear which is my requirement . I know the code for recording and
playing is not complete as said, i Messed around a working code and tried adding Canavs
for keyrepeat method,tried putting a thread around , AT last totally messed,
I tried working on this for two days but couldn't be successfull , Please Help me!!
The control goes out when midlet asks whether to allow recording ,
I thank you anticipation ...
-Abhijith Rao

Midlet asking whether to allow the recording are typical permissions prompts specified by MIDP security policy. You need to sign the MIDlet and give it proper permissions.
Problems like this were discussed in an older thread at WTK forum: *[MIDlet keeps asking for permission.|http://forums.sun.com/thread.jspa?threadID=5347313]* According to one of the posters in the thread, +"...I got it to work on the emulator by setting the permission to 'manufacturer'. It runs smoothly without annoying questions..."+
If you're interested, check documentation and tutorials on MIDP security policy for more details.
For events to record audio only when the key is being pressed, consider GameCanvas API, method getKeyStates.
I am not certain though if doing it this way is a good idea. I doubt that phone users have same habits as those of walkie-talkies; for them it might be indeed more comfortable to use single simple key presses to start and finish recording.

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doh! i've solved this problem now....well for now its working perfectly but i'll have to do a bit more testing.
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user12198246 wrote:
I've searched the forums for the last 2+ hours and can't find a solution for my problem, although there are hundreds of questions on this subject.
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SHOW_VIEW('MEL_LINE_ITEM');
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_true);
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END IF;Here, it seems two problem..
The line..
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_true);
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Hope this helps
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Hi,
This is vaguely similar to the this
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<?xml version="1.0"?>

<mx:VBox xmlns:mx="
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<thumbnails>
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Here's the full mxml:
<?xml version="1.0" encoding="utf-8"?>
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import mx.core.DragSource;
import mx.managers.DragManager;
import mx.events.*;
import mx.containers.Canvas;
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target1:Canvas):void {
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positions.
Alert.show(event.dragSource + " " + vX + " " + vY, 'Mouse
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]]>
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<mx:HTTPService id="srv" url="assets/thumbnails.xml"
useProxy="false" result="xmlLoaded();"/>
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Browser" cornerRadius="10" id="thumbScrollBrowser" bottom="10"
left="10" right="10">
<mx:HorizontalList x="0" y="10" width="100%"
height="110" id="thumbBrowser"
dataProvider="{thumbAC.thumb}"
dragEnabled="true" rollOverColor="#FFFFFF"
selectionColor="#ffffff" borderColor="#FFFFFF"
borderSides="0" borderStyle="none" alpha="1"
backgroundAlpha="1.0"
itemRenderer="Thumbnail">
</mx:HorizontalList>
</mx:Panel>

<mx:ArrayCollection id="wallAC"/>
<mx:Canvas id="myCanvas" backgroundColor="#ffffff"
cornerRadius="10"
borderStyle="solid"
dragEnter="doDragEnter(event);"
dragDrop="doDragDrop(event, myCanvas);" left="10" right="10"
top="10" bottom="180">
</mx:Canvas>
</mx:Application>
Thanks for any thoughts.
Cheers,
Rob

This in the drop handler should give you back the XML you
just dropped:
var getListData:XML=
evtDrag.dragSource.dataForFormat("items");

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The error meaning it looked but it couldn't find Class mygame.shared.Utilities, I'm sure.
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You'll have to adjust your commands accordingly, but I think your problems may go away.

Command+R WIFI problem

I went to verify my macintosh HD in disk utility and it said I need to restart my computer, hold cmd+r and then go to disk utility. The problem I have is when i hold command R and it tells me to choose a network, nothing comes up. I can't do anything without an network connection so is there anything that I can do to get this working again?

Morning Chincharm89,
Thanks for using Apple Support Communities.
For more information on this, take a look at this article:
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/ts1398
If you're unable to locate a nearby Wi-Fi network
Check to see if the network is available by tapping Settings > Wi-Fi and choose from the available networks listed there. Note: It may take a few seconds for the Wi-Fi network name to appear.
Wi-Fi networks configured as closed or private do not broadcast the network name to Wi-Fi devices.Join a closed or private network by tapping Settings > Wi-Fi > Other and entering the Wi-Fi network name, security, and password.
Try restarting your Wi-Fi router by turning it off and then on again.
Note: If your ISP also provides cable or phone service, check with them before attempting this step to avoid interruption of service.
Reset network settings by tapping Settings > General > Reset > Reset Network Settings.
Note: This will reset all network settings, including passwords, VPN, and APN settings.
Hope this helps,
Mario

Command-Return Shortcut Problem

When I hit Command-Return my Mac hides all the desktop items. Unfortunately this disables a shortcut in a program I use called Omnifocus. I have posted about this problem on their forum with no joy:
http://forums.omnigroup.com/showthread.php?t=8000&highlight=shortcut
Does anyone have any idea how to disable this shortcut in other programs? I have tried the "Keyboard Shortcut" Preference Pane and it's not listed. The shortcut action Command-Return enables in Omnifocus is not a menu option so I cannot create a new shortcut for it. I have used several desktop icon hiding freeware apps in the past, but have since removed them from my Mac. They include Desktopple, Backdrop, VirtueDesktop and Spirited Away. So I can't see how they are responsible.
I have run the Console while typing this keyboard shortcut and it records this line:
"Finder[269]: overlaywinref is defined so we hide it"
If you can help me correct this problem I would be very grateful.
Thanks, Paul.

Great suggestions Andy, and yes this solved my problem!
I downloaded "Easyfind" and searched for "desktop" as you suggested.
I moved everything related to "Google Desktop", which I no longer use, into my Trash.
I also found an item called "desktopsweeper.ape" which you mentioned specifically.
This seems to have been the culprit.
It was actually running when I tried to empty my Trash so I opened "Activity Monitor" in my Applications/Utilities folder to force it to quit.
But it wasn't listed there.
So I had to log out and log back in and clear my Trash before it could load.
This did the trick!! So THANK YOU very much!
The shortcut now works perfectly in Omnifocus and if anyone is looking for the best GTD program available, look no further!
Thanks again.

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