Java – Manage libgdx issues for a single clicklistener

In Libgdx, I’m trying to set Clicklistener to a specific case when a specific button is pressed.

public void setExamine(final ClickListener cl) {
        examine.addListener(cl);
}

This is my code in one class that can be accessed from another class via :

table.setExamine(new ClickListener(){...});

However, doing so means adding a new ClickListener each time.

Is there a way to get it to manage a click listener instead of adding one instead of this happening? I tried using it

public void setExamine(final ClickListener cl) {
            examine.clearListeners();
            examine.addListener(cl);
}

But it seems to remove any functionality of button clicking altogether.

You can keep a reference to the “cl” to be passed to the setExamine method in the class. Then you can first remove this particular listener in your setExamine method. I assume that examine is a scene2d actor.

private ClickListener clickListener;

public void setExamine(final ClickListener cl) {
   if(clickListener != null) {
      examine.removeListener(clickListener);
   }
   examine.addListener(cl);
   clickListener = cl;
}

If you want to apply a solution like clearListeners(), you should keep the button’s default listener.

while(examine.getListeners().size > 1) {
   examine.removeListener(examine.getListeners()[1]);
}