How to call destroyApp() method outside the midlet class.

[ramtrg]

How to call destroyApp() method outside the midlet class.

Actually i am using a main midlet(with startApp, pauseApp,destroyApp). And another class for some operations. In this class, i want to call the Application to destroy. How to call destroyApp method.


by

Ram

[raj_J2ME]

How to call destroyApp() method outside the midlet class.

Actually i am using a main midlet(with startApp, pauseApp,destroyApp). And another class for some operations. In this class, i want to call the Application to destroy. How to call destroyApp method.


by

Ram

In the class you are referring to, must have the MIDlet object in itself, and hence you can call the method.

To get this done you should pass the MIDlet's reference in the constructor while you are initializing the class, using that you can call the method,

[buffon2009]

How to call destroyApp() method outside the midlet class.

Actually i am using a main midlet(with startApp, pauseApp,destroyApp). And another class for some operations. In this class, i want to call the Application to destroy. How to call destroyApp method.


by

Ram

You can make A Static constructor which you Can Call it From EveryWhere You Can Made That:

// put that in the Constructor of The MiDlet:

        public static MIDlet instance;

//and in your midlet class put this

        instance=this;

// Create a Static void like destroyApp()

       public Static void quitApp(){
       instance.destroyApp(true);
       instance.notifyDestroyed();
       instance=null;
       System.gc();
}

Then u Can Call it From Any Where This Way:
(Your MiDlet Class).quitApp();

try it and inform me if it doesn't work

BUFFON

[ramtrg]

Thank You very much...buffon... I tried as per your guide... It is working very good....


Also Thank you raj sir..

[rajantictac]

How to call destroyApp() method outside the midlet class.

Actually i am using a main midlet(with startApp, pauseApp,destroyApp). And another class for some operations. In this class, i want to call the Application to destroy. How to call destroyApp method.


by

Ram

cause destroyApp is a protected method you can not access it outside from the midlet package.. in your case you can not access it directly from other class.
so just create a new method in the midlet class and call destroyApp method from this new method and if you make it static you dont have to make a midlet class object to call this method from different class
here is the example:


public class midletsub extends MIDlet implements CommandListener {

//declare a new class type
public static midletsub instance;

//here is the constructor of the the class
public midletsub() {
instance = this;
}

//here is your new method

public static void quitApp(){
instance.destroyApp(true);
instance.notifyDestroyed();
instance=null;
System.gc();
}

}

}



now put this in any another class to destroy the application

midletsub.quitApp();

[robz218]

Hi,

i have been try the source code above but there some error in my code... here's the code :


import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;


public class gameMidlet extends MIDlet implements CommandListener{
public gameCanvas canvas;
public Display display;
public static MIDlet instance;

public gameMidlet() {
canvas = new gameCanvas();
instance = this;
}

public void destroyApp(boolean unconditional) {
notifyDestroyed();
}

protected void pauseApp() {
// TODO Auto-generated method stub
}

protected void startApp() throws MIDletStateChangeException {
display = Display.getDisplay(this);
canvas.start();
display.setCurrent(canvas);
}

public static void quitApp(){
instance.destroyApp(true); -----> error
instance.notifyDestroyed();
instance=null;
System.gc();
}

public void commandAction(Command arg0, Displayable arg1) {
// TODO Auto-generated method stub
}

}

and i call the method :

gameMidlet.quitApp();

but, theres some error on method quitApp() on instance.destroyApp(true);
erorr message = "the method destroyApp(boolean) from the type midlet is not visible"

can somebody help me pls? thx b4...really need help ASAP~

regards,

robz

[tiviinik]

Hi robz218,

If the MIDlet is closed by the platform the MIDlets destroyApp() method is called with the argument true and the MIDlet will be destroyed. You don't have to call notifyDestroyed() method after that.

If you want close the MIDlet yourself by pressing the exit button, then call the notifydestroyed() method. When notifyDestroyed is called it notifies the AMS(Aplication Management Software) that the midlet has entered Destroyed state and all the resources held my the MIDlet are reclaimed.

Below is a link to implementing MIDlet lifecycle requirements and more about destroyApp() and notyfyDestroyed().
http://library.developer.nokia.com/i...BA1B1ABC3.html

For example...

public class gameMidlet extends MIDlet implements CommandListener{
	public gameCanvas canvas;
	public Display display; 
	public static MIDlet instance;

	public gameMidlet() {
		canvas = new gameCanvas();
		instance = this;
	}

	public void destroyApp(boolean unconditional) {
		//notifyDestroyed();
	}

	protected void pauseApp() {
		// TODO Auto-generated method stub
	}

	protected void startApp() throws MIDletStateChangeException {
		display = Display.getDisplay(this);
		canvas.start();
		display.setCurrent(canvas);
	}

	/*
	public void quitApp(){
		instance.destroyApp(true); -----> error
                                instance.notifyDestroyed();
                                instance=null;
                                System.gc();
	}*/

	public void commandAction(Command arg0, Displayable arg1) {
		// TODO Auto-generated method stub 
	}

}

And then from your gameCanvas class call

public void exit()
{
         gameMidlet.instance.notifyDestroyed();
}

-tiviinik

[robz218]

wow thx tiviinik.. that works very well

btw can i asked about insert audio into j2me too..? i have tried many script from many source but nothing work good... can u help me?

thanks before~

[tiviinik]

Hi Robz218,

Below a link how to play sound in Jave ME.

http://www.developer.nokia.com/Commu...und_in_Java_ME

-tiviinik