How do I set false/NoCollision in the collision event in Box2D with libgdx?

I am developing a 2D, underwater, action-RPG for Android, using Box2D as the physics engine, mainly for collision detection, collision response and movement of in-game characters within an environment comprised of walls, rocks, and other creatures.

I am trying to implement character animations (as per What's best way to do character animations in Box2D).

The problem is that I want to suppress the collision response when a collision happens. I have been told that I should set 'NoCollision' in the collision event, which I assume you do by b2Contact::SetEnabled(false) in the Pre-Solve Event. But, the libgdx JNI implementation doesn't implement the pre-solve or post-solve methods in the interface, as it can "be done another way" as stated here.

Does anyone have any idea how else I migh开发者_如何学Pythont do this?

I'm new to Box2D, and finding it very hard going, so any help would be much appreciated!

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Never mind, I've updated the JNI interface to implement the pre and post solve methods, so now I can just use: contact.SetEnabled(false);