TiledMap taking a lot of time to load in libgdx

Question

I am developing a game using libGdx in which a level has 2400 * 450 tiles Map and each tile is of 4 pixels. I am also using box2d in my game.

My problem is that when I run the game on my phone it takes a lot of time to load the screen (more than a minute). How can I reduce this loading time?

I created tilemap using Tiled and I am using Android Studio.

Below is my code (SCALE is 2.0f and PPM is 4)

@Override
public void show() {
    w = Gdx.graphics.getWidth();
    h = Gdx.graphics.getHeight();

    camera = new OrthographicCamera();
    camera.setToOrtho(false, w / SCALE, h / SCALE);
    camera.update();
    viewport = new FitViewport(w / SCALE, h / SCALE  ,camera);
    viewport.apply();
  .
  .
  .

    map = new TmxMapLoader().load("maps/lvl3.tmx");
    tmr = new OrthogonalTiledMapRenderer(map, 1/SCALE);

}

@Override
public void render(float delta) {
    update(Gdx.graphics.getDeltaTime());

    //Render
    Gdx.gl.glClearColor(0, 0, 0, 1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

    tmr.render();


    .
    .
    . 
    b2dr.render(world, camera.combined.scl(PPM));
}

public void update(float delta) {

    world.step(1 / 60f, 6, 2);
    cameraUpdate(delta);
    tmr.setView(camera);
    batch.setProjectionMatrix(camera.combined);
}

@Override
public void resize(int width, int height) {
    camera.setToOrtho(false, width / SCALE, height / SCALE);

    viewport.update( width , height );
}

Please help and thanks in advance

Answer 1

I solved the problem by reducing the tiles in a map and increased individual tile size (from 4 * 4 pixel to 64 *64 pixels)

Moreover i used Asset manager to load the tiles . Thanx @Charanor

Now it completely smooth and takes very less time to load.