I am coding a game in libgdx. While adding the background I used the html module to watch the results fast and easy on my computer. But when I try to see it on my phone I just get a black screen. My project is on GitHub.
My Gamescreen.java
package com.joelbrun.jetskirider.screens; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.InputAdapter; import com.badlogic.gdx.Screen; import com.badlogic.gdx.graphics.GL20; import com.badlogic.gdx.graphics.OrthographicCamera; import com.badlogic.gdx.graphics.Texture; import com.badlogic.gdx.graphics.g2d.SpriteBatch; import com.badlogic.gdx.graphics.g2d.TextureRegion; import com.badlogic.gdx.math.Vector2; import com.badlogic.gdx.physics.box2d.Body; import com.badlogic.gdx.physics.box2d.BodyDef; import com.badlogic.gdx.physics.box2d.Box2DDebugRenderer; import com.badlogic.gdx.physics.box2d.Contact; import com.badlogic.gdx.physics.box2d.ContactImpulse; import com.badlogic.gdx.physics.box2d.ContactListener; import com.badlogic.gdx.physics.box2d.Fixture; import com.badlogic.gdx.physics.box2d.FixtureDef; import com.badlogic.gdx.physics.box2d.Manifold; import com.badlogic.gdx.physics.box2d.Shape; import com.badlogic.gdx.physics.box2d.World; import com.badlogic.gdx.scenes.scene2d.ui.Label; import com.badlogic.gdx.utils.Scaling; import com.badlogic.gdx.utils.viewport.ScalingViewport; import com.badlogic.gdx.utils.viewport.Viewport; import com.joelbrun.jetskirider.buoyancy.Box2DFactory; import com.joelbrun.jetskirider.buoyancy.BuoyancyController; import com.joelbrun.jetskirider.utilities.ParallaxBackground; import com.joelbrun.jetskirider.utilities.ParallaxLayer; public class Gamescreen extends InputAdapter implements Screen, ContactListener { private static final float TIMESTEP = 1.0f / 60.0f; private static final int VELOCITY_ITERATIONS = 8; private static final int POSITION_ITERATIONS = 3; public static final float GAMESCREEN_WIDTH = 20; public static final float GAMESCREEN_HEIGHT = 20 * (Gdx.graphics.getHeight() / (float) Gdx.graphics.getWidth()); public static final int OBSTACLE_TYPES = 5; public static final float WATER_HEIGHT = 5; //ToDo: Change to about 5 public static final float WATER_WIDTH = GAMESCREEN_WIDTH; private static final float JETSKI_BOX_X = 1.5f; private static final float JETSKI_BOX_Y = 1; private World world; private Box2DDebugRenderer debugRenderer; public Texture jetski; public TextureRegion wave; public TextureRegion background; public SpriteBatch batch; public OrthographicCamera camera; public Label score; Viewport viewport; private BuoyancyController buoyancyController; private ParallaxBackground bkground; @Override public void show() { world = new World(new Vector2(0, -9.81f), true); debugRenderer = new Box2DDebugRenderer(); //Textures Texture[] texture = new Texture[OBSTACLE_TYPES]; for (int i=0; i<OBSTACLE_TYPES; i++){ texture[i] = new Texture(Gdx.files.internal("game/obstacles/obstacle" + Integer.toString(i+1)+".png")); } jetski = new Texture("game/jetski.png"); wave = new TextureRegion(new Texture("game/water1.png")); batch = new SpriteBatch(); background = new TextureRegion(new Texture(Gdx.files.internal("game/background.png"))); //Camera & Viewport camera = new OrthographicCamera(GAMESCREEN_WIDTH, GAMESCREEN_HEIGHT); viewport = new ScalingViewport(Scaling.fillY, GAMESCREEN_WIDTH, GAMESCREEN_HEIGHT, camera); viewport.apply(); camera.position.set(GAMESCREEN_WIDTH / 2, GAMESCREEN_HEIGHT / 2, 0); //InputProcessor Gdx.input.setInputProcessor(this); //Water Shape shape = Box2DFactory.createBoxShape(WATER_WIDTH, WATER_HEIGHT / 2, new Vector2(0, 0), 0); FixtureDef fixtureDef = Box2DFactory.createFixture(shape, 2f, 0.1f, 0f, true); Body water = Box2DFactory.createBody(world, BodyDef.BodyType.StaticBody, fixtureDef, new Vector2(0, 0)); buoyancyController = new BuoyancyController(world, water.getFixtureList().first()); world.setContactListener(this); //Ground Shape groundShape = Box2DFactory.createChainShape(new Vector2[]{ new Vector2(0, -1.8f), new Vector2(20, -1.8f) }); FixtureDef fixtureDefGround = Box2DFactory.createFixture(groundShape, 2, 0, 0.2f, false); Box2DFactory.createBody(world, BodyDef.BodyType.StaticBody, fixtureDefGround, new Vector2(0, 2)); //Jetski Shape jetskiShape = Box2DFactory.createBoxShape(JETSKI_BOX_X, JETSKI_BOX_Y /2, new Vector2(0, 0), 0); FixtureDef fixtureDef1 = Box2DFactory.createFixture(jetskiShape, 0.9f, 0.5f, 0.5f, false); Box2DFactory.createBody(world, BodyDef.BodyType.DynamicBody, fixtureDef1, new Vector2(2, WATER_HEIGHT/2)); //Background Scrolling bkground = new ParallaxBackground(new ParallaxLayer[]{ new ParallaxLayer(background, new Vector2(1,0), new Vector2(0, 0)), new ParallaxLayer(wave, new Vector2(1,0), new Vector2(0, 0)) }, Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), new Vector2(150, 0)); } @Override public void render(float delta) { Gdx.gl.glClearColor(1, 1, 1, 1); Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); bkground.render(delta); debugRenderer.render(world, camera.combined); batch.setProjectionMatrix(camera.combined); batch.begin(); batch.end(); camera.update(); world.step(TIMESTEP, VELOCITY_ITERATIONS, POSITION_ITERATIONS); buoyancyController.step(); } @Override public void resize(int width, int height) { int SCREEN_WIDTH = width; int SCREEN_HEIGHT = height; viewport.setWorldSize(GAMESCREEN_WIDTH, GAMESCREEN_HEIGHT); viewport.update(SCREEN_WIDTH, SCREEN_HEIGHT,true); camera.update(); } @Override public void pause() { } @Override public void resume() { } @Override public void hide() { dispose(); } @Override public void dispose() { batch.dispose(); jetski.dispose(); world.dispose(); debugRenderer.dispose(); } @Override public void beginContact(Contact contact) { Fixture fixtureA = contact.getFixtureA(); Fixture fixtureB = contact.getFixtureB(); if (fixtureA.isSensor() && fixtureB.getBody().getType() == BodyDef.BodyType.DynamicBody) { buoyancyController.addFixture(fixtureB); } else if (fixtureB.isSensor() && fixtureA.getBody().getType() == BodyDef.BodyType.DynamicBody) { buoyancyController.addFixture(fixtureA); } } @Override public void endContact(Contact contact) { Fixture fixtureA = contact.getFixtureA(); Fixture fixtureB = contact.getFixtureB(); if (fixtureA.isSensor() && fixtureB.getBody().getType() == BodyDef.BodyType.DynamicBody) { buoyancyController.removeFixture(fixtureB); } else if (fixtureB.isSensor() && fixtureA.getBody().getType() == BodyDef.BodyType.DynamicBody) { if (fixtureA.getBody().getWorldCenter().y > -1) { buoyancyController.removeFixture(fixtureA); } } } @Override public void preSolve(Contact contact, Manifold oldManifold) { } @Override public void postSolve(Contact contact, ContactImpulse impulse) { } } 
