public class LaohuGame extends Game {

public static final int FRUIT_NUM = 24;
public static final String WORK_DIR = "Desktop/assets/";

@Override
public void create() {
    GameScreen gameScreen = new GameScreen(this);
    setScreen(gameScreen);

}

public class GameScreen extends LaohuScreen {

private final Stage stage;
public static int START_X = 11;
public static int START_Y = 199;

public GameScreen(Game game) {
    super(game);
    stage = new Stage(GAME_WIDTH,GAME_HEIGHT,true);
    //add actors to the stage
}

public class LaohuScreen implements Screen{

int GAME_WIDTH;
int GAME_HEIGHT;
protected Game game;
public LaohuScreen(Game game) {
    this.game = game;
    GAME_WIDTH = Gdx.graphics.getWidth();
    GAME_HEIGHT = Gdx.graphics.getHeight();
}

public class LaohuGame extends Game {

public static final int FRUIT_NUM = 24;
public static final String WORK_DIR = "Desktop/assets/";


@Override
public void create() {
    GameScreen gameScreen = new GameScreen(this);
    setScreen(gameScreen);

}

@Override
public void setScreen(Screen screen) {
    super.setScreen(screen);
    this.getScreen().resize(Gdx.graphics.getWidth(), Gdx.graphics.getHeight() * 5 / 10);
}

@Override
public void resize(int width, int height) {
    if (getScreen() != null) getScreen().resize(width, height * 5 / 10);
}
}