application j2me

Question

Slt,
je suis en train de develloper une application mobile avec J2ME.
Cette application permet de lire un video à partir d'un url.Je veux ajouter des threads pour le snapshot et play mais je n'arrive pas à le faire.
voila mon code pour le midlet

/*--------------------------------------------------
* VideoPlayer.java
*-------------------------------------------------*/
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;
import java.io.*;

/** 
 * Un example de MIDlet qui lit une vidéo depuis un URL" 
 * @author  Tebourbi
 * @version
 */

public class VideoPlayer extends MIDlet implements CommandListener,ItemStateListener,Runnable
{
private Display display = null; // Reference to Display object
private Form fmMain; // The main form
private Command cmExit,playCommand, pauseCommand,stopCommand,snapshotCommand; // Command to exit the MIDlet
private StringItem Msg;
private Player p;
private VideoControl vc;
private int a,b;
private Gauge gauge = null;
private StringItem gaugeLabel = null;
Thread th;
public void run(){


} 
public VideoPlayer()
{
display = Display.getDisplay(this);

cmExit = new Command("Exit", Command.EXIT, 1);
playCommand = new Command("Play", Command.SCREEN, 2);
    pauseCommand = new Command("Pause", Command.SCREEN, 3);
    stopCommand = new Command("Stop", Command.SCREEN, 4);
    snapshotCommand = new Command("Snapshot", Command.SCREEN, 5);
gauge =new Gauge("Volume (0-50)", true, 50, 50);
fmMain = new Form("HelloSupcom"); //Form
Msg = new StringItem("", "         ...Hello Sup'Com!         ");	
gaugeLabel = new StringItem("Volume : 50", "");
//private Command volCommand = new Command("Volume", Command.ITEM, 2);

fmMain.append(gauge);
fmMain.append(gaugeLabel);
fmMain.addCommand(cmExit);
 		fmMain.addCommand(playCommand);
        fmMain.addCommand(pauseCommand);
        fmMain.addCommand(stopCommand);
        fmMain.addCommand(snapshotCommand);
        fmMain.setCommandListener(this);
fmMain.setItemStateListener(this);

fmMain.append(Msg);
fmMain.setCommandListener(this);

}


public void startApp()
{
  
;
   
try {
 p = Manager.createPlayer("http://localhost:80/sas/shark.mpg");
 p.realize();
     vc = (VideoControl)p.getControl("VideoControl");
    if (vc != null) {
        fmMain.append((Item)vc.initDisplayMode(vc.USE_GUI_PRIMITIVE, null));
        Display.getDisplay(this).setCurrent(fmMain);
    }
    p.prefetch();
    } 
catch (IOException ioe) { System.out.println(ioe.toString());}
 catch (MediaException me) {System.out.println(me.toString());}
    

}

public void pauseApp()
{
}

public void destroyApp(boolean unconditional)
{
try {
         p.stop();
      } 
      catch(MediaException me) {
      }
  p=null;
}

public void commandAction(Command c, Displayable s)
{
if (c == cmExit)
{
destroyApp(false);
notifyDestroyed();
}


if (c == playCommand)
{

 try {
 	if (a == 1 )
 	{ p = Manager.createPlayer("http://localhost:80/sas/shark.mpg");
 	p.realize();
    vc = (VideoControl)p.getControl("VideoControl");
     p.prefetch();
    }
 
 
 
if ( b==0){

    p.start();
    b=1;
    }
    } 
catch (IOException ioe) { System.out.println(ioe.toString());}
 catch (MediaException me) {System.out.println(me.toString());}
}


if (c ==pauseCommand)
{
a=0;
 b=0;
  try {
  	
    p.stop();
    } 
//catch (IOException ioe) { System.out.println(ioe.toString());}
 catch (MediaException me) {System.out.println(me.toString());}
 }
 	if (c ==stopCommand)
{
a=1;
  	
b=0;
  	
    p.deallocate();
 
 }

  
}



 public void itemStateChanged(Item item) {
 	 // if an item changes &#8211; it gets sent here!
 	  System.out.println("State changed on item "             +   item.toString());  
 	  	if (item!=null) {
    if (item == gauge) {
VolumeControl vcc = getVolumeControl();
    if (vcc != null) {
vcc.setLevel(gauge.getValue());
updateVolume(vcc);
    }
    }
} 
 	    }
 	    
 	   private VolumeControl getVolumeControl() {
 	   	VolumeControl volcont=null;
try {

    if (p != null) {
    	volcont=(VolumeControl) p.getControl("VolumeControl");

    }
    
    
} catch (IllegalStateException ise) {
    // thrown when player is closed
}

return volcont;
    
    } 
 	    private void updateVolume(VolumeControl c) {
if (c==null) {
    c = getVolumeControl();
}
if (c != null) {
//int l = gauge.getValue();
   //c.setLevel(l);
    int l =c.getLevel();
    String disp = "Volume: "+String.valueOf(l);
    if (gauge != null ) {
gauge.setValue(l);
gaugeLabel.setLabel(disp);
    }
   
}
    }
}


j'attends votre aide.
merci d'avance.

amounadaknou · Answer

amounadaknou

Application j2me

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