[Kaisser]

Hello!

I have a class that shows the camera correctly.
It´s the code:

package hello;

import java.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import javax.microedition.media.control.VideoControl;
import javax.microedition.amms.*;
import javax.microedition.amms.control.camera.*;
import javax.microedition.io.file.*;
import javax.microedition.io.*;


public class CamaraMovil extends MIDlet 
           implements CommandListener, ItemStateListener{
    
    private Player player;
    private VideoControl vidCtrl = null;
    private Command exitCommand = new Command("Exit", Command.ITEM, 1);
    
    private Display display;
    private Form vidForm;
    private Item videoItem;
    
    
    
    public CamaraMovil() {
        vidForm = new Form("Camera Player");
        display = Display.getDisplay(this);
        display.setCurrent(vidForm);
        vidForm.addCommand(exitCommand);
        vidForm.setCommandListener(this);
        
        try {           
            player = Manager.createPlayer("capture://video");
            player.prefetch();
            player.realize();
            
            vidCtrl = (VideoControl)player.getControl(
                "VideoControl");
            if (vidCtrl != null) {
                videoItem = (Item)vidCtrl.initDisplayMode(VideoControl.USE_GUI_PRIMITIVE, null);
                vidCtrl.setDisplaySize(140, 140);
                vidForm.append(videoItem);
            } else {
                System.out.println("Error: Can not create VideoControl");
                return;
            }
                 
             
        } catch (MediaException me) {
            me.printStackTrace();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }

        public void startApp() {
        try {
            player.start();
            
        } catch (MediaException me) {
            me.printStackTrace();
        }
    }
    
        public void destroyApp(boolean unconditional) {
        closePlayer();
        notifyDestroyed();
    }
        
   private void closePlayer() {
        if (player != null) {
            player.close();
            player = null;
        }
    }
   
           
    protected void pauseApp() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void commandAction(Command arg0, Displayable arg1) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void itemStateChanged(Item arg0) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
       
}

This class runs ok. If I used this class directly, I don´t have any problem.

I will like to have a midlet that calls the CamaraMovil class. I realized the call in this way:

public void commandAction(Command command, Displayable displayable) {                                               
        // write pre-action user code here
        // Después de inicializar todo, tenemos la pantalla de opciones.
        // Pulsamos OK, que debería ser "Ver Camara", pero bueno.
        if (displayable == form) {                                           
            if (command == VerCamara) {                                         
                // write pre-action user code here
                // El comando OK, corresponde a VerCamara.
                switchDisplayable(null, getForm1());                                           
                // write post-action user code here
                //Se supone que ya hemos creado la nueva pantalla, ahora
                // faltaría "encender" la cámara.
                
                Camara = new CamaraMovil();

....

I obtained an error:

java.lang.SecurityException: Application not authorized to access the restricted API
at com.sun.midp.security.SecurityToken.checkIfPermissionAllowed(SecurityToken.java:170)
at com.sun.midp.security.SecurityToken.checkIfPermissionAllowed(SecurityToken.java:145)
at com.sun.midp.midletsuite.MIDletSuiteImpl.checkIfPermissionAllowed(MIDletSuiteImpl.java:281)
at com.sun.midp.midlet.MIDletState.<init>(+83)
at javax.microedition.midlet.MIDletProxy.<init>(MIDletProxy.java:33)
at javax.microedition.midlet.MIDlet.<init>(MIDlet.java:70)
at hello.CamaraMovil.<init>(CamaraMovil.java:29)
at hello.HelloMIDlet.commandAction(HelloMIDlet.java:118)
at javax.microedition.lcdui.Display$DisplayAccessor.commandAction(Display.java:1992)
at javax.microedition.lcdui.Display$DisplayManagerImpl.commandAction(Display.java:2825)
at com.sun.midp.lcdui.DefaultEventHandler.commandEvent(DefaultEventHandler.java:303)
at com.sun.midp.lcdui.AutomatedEventHandler.commandEvent(AutomatedEventHandler.java:670)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.handleVmEvent(+194)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(+51)


WHY? Why the code is ok if only runs the class ??

I hope someone can help me.

THANKS.


Pd: Excusme, I have an horrible english.

[jappit]

Hi Kaisser,

the problem is that you cannot instantiate a MIDlet from within another MIDlet. So, you should rewrite your CamaraMovil class (for example making it extend directly Form) so that it could be usable within your midlets.

Pit