libgdx - 当我调用setScreen（）设置一个新屏幕时，屏幕在新屏幕和旧屏幕之间闪烁

Question

我有一个名为MenuScreen的屏幕，当新按钮被按下时，屏幕会设置一个新屏幕GameScreen。发生这种情况时，屏幕会在MenuScreen和GameScreen之间闪烁，如MenuScreen正在隐藏。这里是MenuScreen，GameScreen和输入处理器的代码。

注意：现在，GameScreen只会显示紫色背景。

MenuScreen

public class MenuScreen implements Screen { 

    private TextureRegion title; 
    private TextureRegion newgameup; 
    private TextureRegion loadgameup; 
    private NewGameButton newgame; 
    private SpriteBatch batcher; 
    float screenWidth = Gdx.graphics.getWidth(); 
    float screenHeight = Gdx.graphics.getHeight(); 
    private float height; 
    private float width; 
    private MyGame game; 
    private OrthographicCamera cam; 
    private InputHandler inputHandler; 
    private float timer; 

    public MenuScreen(MyGame game) { 
     this.game = game; 
    } 

    @Override 
    public void show() { 
     Gdx.app.log("MenuScreen", "show method"); 
     title = AssetLoader.title; 
     newgameup = AssetLoader.newgameup; 
     loadgameup = AssetLoader.loadgamedwn; 
     width = 800; // Gdx.graphics.getWidth(); 
     height = 480; // Gdx.graphics.getHeight(); 
     cam = new OrthographicCamera(); 
     cam.setToOrtho(false, 800, 480); 
     batcher = new SpriteBatch(); 
     batcher.setProjectionMatrix(cam.combined); 
     inputHandler = new InputHandler(game, width, height); 
     Gdx.input.setInputProcessor(inputHandler); 

    } 

    @Override 
    public void render(float delta) { 
     Gdx.gl.glClearColor(1, 1, 1, 1); 
     Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); 
     batcher.begin(); 
     batcher.draw(title, (width/2 - title.getRegionWidth()/2), 
       (height/2 + 25), 288, 52); 
     inputHandler.getNewgame().draw(batcher); 
     inputHandler.getLoadgame().draw(batcher); 
     batcher.end(); 

     if (game.isGameScreen()) { 
      timer += delta; 
      if (timer > 1) { 
       game.setScreen(new GameScreen(game)); 
      } 
     } 
    } 

    @Override 
    public void resize(int width, int height) { 
     // TODO Auto-generated method stub 
    } 

    @Override 
    public void hide() { 
     // TODO Auto-generated method stub 
    } 

    @Override 
    public void pause() { 
     // TODO Auto-generated method stub 
    } 

    @Override 
    public void resume() { 
     // TODO Auto-generated method stub 
    } 

    @Override 
    public void dispose() { 
     // TODO Auto-generated method stub 
    } 
} 

GameScreen

public class GameScreen implements Screen { 
    private MyGame game; 
    private SpriteBatch batcher; 

    public GameScreen(MyGame game) { 
     this.game = game; 
    } 

    @Override 
    public void show() { 
     Gdx.app.log("GameScreen", "show method"); 
     Gdx.gl.glClearColor(255/255.0f, 50/255.0f, 255/255.0f, 1f); 
     Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); 
     batcher = new SpriteBatch(); 
    } 

    @Override 
    public void render(float delta) { 
     batcher.begin(); 
     batcher.end(); 
    } 
} 

InputHandler

public class InputHandler implements InputProcessor{ 
    private NewGameButton newgame; 
    private SimpleButton loadgame; 
    private float width, height; 
    private MyGame game; 


    public InputHandler(MyGame game, float width, float height) { 
     Gdx.app.log("InputHandler", "constructor"); 
     this.game = game; 
     this.width = width; 
     this.height = height; 

     newgame = new NewGameButton((width/2 - AssetLoader.newgameup.getRegionWidth()/2), 
       (height/2 - 40), (float) 200, (float) + 35, AssetLoader.newgameup, AssetLoader.newgamedwn); 

     loadgame = new SimpleButton((width/2 - AssetLoader.loadgameup.getRegionWidth()/2), 
       (height/2 - 100), (float) 186, (float) + 37, AssetLoader.loadgameup, AssetLoader.loadgamedwn); 
    } 

    @Override 
    public boolean keyDown(int keycode) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public boolean keyUp(int keycode) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public boolean keyTyped(char character) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public boolean touchDown(int screenX, int screenY, int pointer, int button) { 
     Gdx.app.log("InputHandler", "touch down"+screenX + "," +screenY); 
     Gdx.app.log("InputHandler", "activescreen: "+game.activescreen); 
     if (game.isMenuScreen()) { 

      newgame.isTouchDown(screenX, screenY); 
     } 

     return false; 
    } 

    @Override 
    public boolean touchUp(int screenX, int screenY, int pointer, int button) { 
     if (game.isMenuScreen()) { 
      if (newgame.isTouchUp(screenX, screenY)) { 
       game.gamescreen(); 
       return true; 
      } 
     } 
     return false; 
    } 

    @Override 
    public boolean touchDragged(int screenX, int screenY, int pointer) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public boolean mouseMoved(int screenX, int screenY) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public boolean scrolled(int amount) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    public NewGameButton getNewgame() { 
     return newgame; 
    } 

    public SimpleButton getLoadgame() { 
     return loadgame; 
    } 

    public void setNewgame(NewGameButton newgame) { 
     this.newgame = newgame; 
    } 

    public void setLoadgame(SimpleButton loadgame) { 
     this.loadgame = loadgame; 
    } 
} 

Answer 1

所以经过很大的FR在我发布我的问题后不久我发现了一个简单的错误：我在show（）而不是render（）中调用了我的Gdx.gl.glClear（）和Gdx.gl.Clear（）方法。