Need help displaying image on canvas :((

Question

can anybody help me with my coding. my problem is, i cannot display an image on my canvas. plz..someone help me to solve my problem..
Here's my coding...
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
import java.util.*;
public class ImageMidletServlet
    Display display = null;
    //Form f = null;
    String url = "http://localhost:8080/banner/hp0.gif";
    String url2 = "http://localhost:8080/banner/rotateNumber";      
    //String url = "http://localhost:8080/banner/banner";
    Command backCommand = new Command("Back", Command.BACK, 0);
    Command submitCommand = new Command("Submit", Command.OK, 2);
    Command exitCommand = new Command("Exit", Command.STOP, 3);
    private Test test;  
    private StringItem stringItem2;
    private TextField txtField;
    private Timer tm;          // Timer
    private load load;       // Task
    private int id = 0;
    Image img = null;
    //String id;
    public ImageMidletServlet(Display display)
        this.display=display;  
        loadimage();
    public void loadimage()
        tm = new Timer();
        load = new load();
        tm.schedule(load,0,6000);
     class Test extends Canvas implements Runnable, CommandListener
        private Canvas canvas;
        public Test(Canvas canvas)
            this.canvas=canvas;
            setCommandListener(this);
        public void start()
            Thread t = new Thread(this);
            t.start();
        public void run ()
            DataInputStream is = null;
            DataInputStream is2 = null;
            StringBuffer sb = new StringBuffer();
            Image img= null;
            TextBox txtBox = null;
            StringBuffer b = new StringBuffer();
            HttpConnection c2 = null;
            OutputStream os = null;           
            ++ id;
            try
                c2 = (HttpConnection)Connector.open(url2+ "?bannerid="+id);
                os = c2.openOutputStream();
                os.write(("bannerid="+id).getBytes());              
                os.flush();
                //HttpConnection c = (HttpConnection) Connector.open(url+ "?bannerid="+id);
                HttpConnection c = (HttpConnection) Connector.open(url);
                int len = (int)c.getLength();
                if (len > 0)
                    is = c.openDataInputStream();
                    byte[] data = new byte[len];
                    is.readFully(data);
                    is2 = c2.openDataInputStream();
                    int ch;
                    while ((ch = is2.read()) != -1) {
                    b.append((char) ch);
                    System.out.print((char)ch);
                    try {
                    //img = Image.createImage(data, 0, len);
                    img = Image.createImage("/images/splash.png");
                    Graphics graphics = img.getGraphics();                   
                    catch (Exception e)
                    if(img==null)
                    System.out.print("no image");
                    else {System.out.print("got image");}
                else
                    showAlert("length is null");;
                is.close();
                c.close();
                c2.close();
               // repaint();
            catch (Exception e)
                e.printStackTrace();
                showAlert(e.getMessage());
        /* Display Error On screen*/
        private void showAlert(String err)
            Alert a = new Alert("");
            a.setString(err);
            a.setTimeout(Alert.FOREVER);
            display.setCurrent(a);
         public void commandAction(Command c, Displayable d)
        if (c == exitCommand)
            //destroyApp(true);
            //notifyDestroyed();
        else if (c == backCommand)
            //display.setCurrent(f);
        else if (c == submitCommand)
            /*test  = new Test(this);
            test.start();*/
         protected void paint(Graphics graphics)
         if (img != null)
            graphics.setColor(0x000000);  
            graphics.drawImage(img, 0, 0, Graphics.TOP | Graphics.HCENTER);
         else
         {System.out.print("no drawing");}
    class load extends TimerTask
    private Test canvas;
       public final void run()
      this.canvas = canvas;
      test  = new Test(canvas);
      //test();
      test.start();
}

Answer 1

Hi
I would do like this: take the code that draws the image an put it into a separate class (which will extend the Canvas class) which will take as a parameter to its constructor either an array of bytes or an Image object (it's up to you) and call this class after you have downloaded all the bytes from the input stream. I presume that you get the "no drawing" message..
Mihai