Run code on exit (follow-up)

sableRaph

This is a follow-up of the thread: http://forum.processing.org/one/topic/run-code-on-exit.html

The recommended method for running some code when closing the sketch used to be registering a dispose handler. However, it looks like the registerDispose() method from PApplet is deprecated (see Javadoc)

The following code still works but is there a recommended alternative to the registerDispose() method?

public class DisposeHandler {

DisposeHandler(PApplet pa)
{
  pa.registerDispose(this);
}

public void dispose()
{      
  println("Closing sketch");
}

}

quark

The new way of registering dispose (V2) is

registerMethod("dispose", this);

sableRaph

Thanks quark!

Here's the full code for later reference:

DisposeHandler dh;

void setup() {
    dh = new DisposeHandler(this);
    // setup stuff
}

void draw() {
    // draw stuff
}

public class DisposeHandler {
  
  DisposeHandler(PApplet pa)
  {
    pa.registerMethod("dispose", this);
  }
  
  public void dispose()
  {      
    println("Closing sketch");
    // Place here the code you want to execute on exit
  }
}

biomurph

Hi, This is great! It will help me solve for some serialEvent() crashes that I've been having. I see that the dispose() does not get called when closing from the IDE stop button. Is there a way to run code on that event? Or is it because of what NoahBuddy says on this thread? http://processing.org/discourse/beta/num_1240630170.html Basically that the JVM is not obligated to run the method, so it likely won't.

Ethan

Another way to run code on exit:

void exit() {
  //put code to run on exit here
  super.exit();
}