I ported my midlet to Blackberry and I can't assign a listener to the ESCAPE key - blackberry

Question

Here is some of the code in my midlet:
the addKeyListener method presents an error as the function is not recognized.
import net.rim.device.api.system.KeyListener;
import net.rim.device.api.ui.Keypad;
public class PhraZApp extends javax.microedition.midlet.MIDlet implements ActionListener{
public PhraZApp {
addKeyListener (new KeyPadListener());
}
protected void keyPressed(int key) {
System.out.println(key);
}
public void actionPerformed(ActionEvent evt) {
System.out.println(evt.getKeyEvent());
}
public final class KeyPadListener implements KeyListener {
public boolean keyChar(char key, int status, int time) {
return false;
}
public boolean keyDown(int keycode, int time) {
if (Keypad.KEY_ESCAPE == Keypad.key(keycode)) {
System.out.println("key: " + keycode);
return true;
}
//let the system to pass the event to another listener.
return false;
}
public boolean keyUp(int keycode, int time) {
throw new UnsupportedOperationException("Not supported yet.");
}
public boolean keyRepeat(int keycode, int time) {
throw new UnsupportedOperationException("Not supported yet.");
}
public boolean keyStatus(int keycode, int time) {
throw new UnsupportedOperationException("Not supported yet.");
}
}
The keyPressed action is not heard by any of those listeners.
Ive been told to add the keylistner to a GUI component, but none that I try it with accept it.
Furthermore, one of the possible issues is that the addKeyListener method is not declared, but in that case I don't know how to declare it.
If i change extends javax.microedition.midlet.MIDlet to extends UiApplication, the addKeyListener becomes accepted but the entire midlet falls to a RuntimeErrorException.
How can I get my Midlet to hear the escape key? I have searched through many forums and none of the suggestions have worked so far.
Thanks in advance.

Answer 1

You need to create a LWUIT Command and assign it to the parent form using the setBackCommand method. You can handle the command event like you handle every other command in LWUIT. E.g. through a command listener or even just by subclassing it and overriding actionPerformed(ActionEvent).

Answer 2

Thanks to Shai pointing me in the right direction, I solved it.
Here is how I did it.
Command backCommand = new Command("",Keypad.KEY_ESCAPE);
form.setBackCommand(backCommand);
then
public void actionPerformed(ActionEvent evt) {
if (evt.getCommand().getId() ==Keypad.KEY_ESCAPE){
//execution code
}
I didn't try, but if I had included text in the command I imagine it would appear as such when I push the menu button. The important thing is that I finally got the MIDlet to hear out the escape button after MANY hours of trying and searching for solutions.