如何在MainScreen菜单（此处）添加背景图像？

Question

我如何创建和绘制图像以从我的资产设置背景？

public class MainScreen extends AbstractScreen { 

    private SpriteBatch batch; 
    private Button exit, play; 

    public MainScreen(Main main) { 
     super(main); 

    } 

    public void show(){ 
     batch= main.getBatch(); 
     Texture texture = new Texture(Gdx.files.internal("BotonExit.png")); 
     int centroY = Gdx.graphics.getHeight()/2 - texture.getHeight()/2; 
     int centroX = Gdx.graphics.getWidth()/2 - texture.getWidth()/2; 
     exit = new ButtonExit(centroX, centroY - 50); 
     play = new ButtonPlay(centroX, centroY + 50); 


    } 

    public void render(float delta){ 
     Gdx.gl.glClearColor(0, 0, 0, 1); 
     Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);  
     exit.update(); 
     play.update(); 
     batch.begin(); 
     exit.draw(batch); 
     play.draw(batch); 
     batch.end(); 
    } 
} 

Answer 1

你很接近绘制背景，你应该设置相机来填充所有背景。这可以帮助你：

private SpriteBatch batch; 
private Button exit, play; 
private final OrthographicCamera camera; 

public MainScreen(Main main) { 
    super(main); 
} 

public void show(){ 

    batch= main.getBatch(); 

    Texture background = new Texture(Gdx.files.internal("background.png")); 
    background.setSize(800,480); 

    Texture texture = new Texture(Gdx.files.internal("BotonExit.png")); 
    int centroY = Gdx.graphics.getHeight()/2 - texture.getHeight()/2; 
    int centroX = Gdx.graphics.getWidth()/2 - texture.getWidth()/2; 
    exit = new ButtonExit(centroX, centroY - 50); 
    play = new ButtonPlay(centroX, centroY + 50); 

    camera = new OrthographicCamera(); 
    camera.setToOrtho(false, 800, 480); 


} 

public void render(float delta){ 
    Gdx.gl.glClearColor(0, 0, 0, 1); 
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);  
    exit.update(); 
    play.update(); 

    batch.setProjectionMatrix(camera.combined); 
    batch.begin(); 
    background.draw(batch); 
    exit.draw(batch); 
    play.draw(batch); 
    batch.end(); 
}