So I'm trying to create a input class that implements a InputHandler & GestureListener in order to support both Android & Desktop. The problem is that not all the methods are being called properly.

Here is the input class definition & a couple of the methods:

public class InputHandler implements GestureListener, InputProcessor{  
...
public InputHandler(OrthographicCamera camera, Map m, Player play, Vector2 maxPos) {  
...
@Override
public boolean zoom(float originalDistance, float currentDistance) {
    //this.zoom = true;
    this.zoomRatio = originalDistance / currentDistance;
    cam.zoom = cam.zoom * zoomRatio;
    Gdx.app.log("GestureDetector", "Zoom - ratio: " + zoomRatio);
    return true;
}

@Override
public boolean touchDown(int x, int y, int pointerNum, int button) {
    booleanConditions[TOUCH_EVENT] = true;
    this.inputButton = button;
    this.inputFingerNum = pointerNum;   
    this.lastTouchEventLoc.set(x,y);
    this.currentCursorPos.set(x,y);

    if(pointerNum == 1) {
        //this.fingerOne = true;
        this.fOnePosition.set(x, y);
    }
    else if(pointerNum == 2) {
        //this.fingerTwo = true;
        this.fTwoPosition.set(x,y);
    }       

    Gdx.app.log("GestureDetector", "touch down at " + x + ", " + y + ", pointer: " + pointerNum);       
    return true;
}

The touchDown event always occurs but I can never trigger Zoom (or pan among others...). The following is where I register and create the input handler in the "Game Screen".

public class GameScreen implements Screen {  
...  
   this.inputHandler = new InputHandler(this.cam, this.map, this.player, this.map.maxCamPos);
   Gdx.input.setInputProcessor(this.inputHandler);  

Anyone have any ideas why zoom, pan, etc... are not triggering?

Thanks!