Let's say you got 3 screens, MainMenuScreen, OptionsScreen, GameScreen.
First you need to declare them in your main class.
It will look like this
public class MainClass extends Game implements ApplicationListener {
private GameScreen gameScreen;
private MenuScreen menuScreen;
private OptionsScreen optionsScreen;
@Override
public void create() {
}
setGameScreen()
{
gameScreen=new GameScreen(this);
setScreen(gameScreen);
}
setMenuScreen()
{
menuScreen=new menuScreen(this);
setScreen(menuScreen);
}
setOptionsScreen()
{
optionsScreen=new OptionsScreen(this);
setScreen(gameScreen);
}
@Override
public void dispose() {
super.dispose();
}
@Override
public void render() {
Gdx.gl.glClearColor(1, 1, 1, 1);
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
super.render();
}
@Override
public void resize(int width, int height) {
super.resize(width, height);
}
@Override
public void pause() {
super.pause();
}
@Override
public void resume() {
super.resume();
}
}
Now every screen you got, needs to have a MainClass variable and a constructor of it.
Lets say for the GameScreen class, it will be like
public class GameScreen implements Screen{
private MainClass mainClass;
public GameScreen(MainClass mc)
{
mainClass=mc;
}
// your methods (show,render, pause, etc)
}
Now when you want to change the screen just use in your screen
mainClass.setMenuScreen();