[LibGdx, TiledMap] getCell returns null :S

Newbie & Debugging Questions
#1

So I’m using both LibGdx and TiledMap to create a game. Im currently working on the collision between the player and the map, but everytime when I try to use the getCell method I only recieve a NullPointerException :frowning: Im using the latest version of Libgdx and I know some of the methods has been redesigned. The map will render fine though.

package com.mayogames.zombiecubes;

import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.maps.tiled.TiledMap;
import com.badlogic.gdx.maps.tiled.TiledMapTileLayer;
import com.badlogic.gdx.maps.tiled.TmxMapLoader;
import com.badlogic.gdx.maps.tiled.renderers.OrthogonalTiledMapRenderer;
import com.mayogames.zombiecubes.screens.GameScreen;

public class World {
	ZombieCubes zombieCubes;
	private GameScreen gameScreen;
	
	TiledMap testMap;
	OrthogonalTiledMapRenderer mapRender;
	
	TiledMapTileLayer layer;
	
	public World(ZombieCubes zombieCubes, GameScreen gameScreen, String mapName){
		this.zombieCubes = zombieCubes;
		this.gameScreen = gameScreen;
		
		if(mapName == "testMap"){
			TiledMap testMap = new TmxMapLoader().load("data/Maps/testMap.tmx");
			OrthogonalTiledMapRenderer mapRender = new OrthogonalTiledMapRenderer(testMap);
			
			layer = (TiledMapTileLayer) testMap.getLayers().get(0);
			
			System.out.println(layer.getCell(0, 0));
			
			this.layer = layer;
			this.testMap = testMap;
			this.mapRender = mapRender;
		}
		
	}
	
	public void tick(){
		
	}
	
	public void render(OrthographicCamera camera){
		mapRender.setView(camera);
		mapRender.render();
	}
	
	public TiledMapTileLayer getCollisionLayer(){
		return layer;
	}
}