LibGDX游戏暂停状态:动画闪烁/错误

我试图为我的下一个游戏实现一个暂停选项。通过按下后退按钮,我的游戏应该转到updatePause()方法。但它会重复渲染最近的2-3帧。让它看起来像“闪烁”。

为了防止这种情况,我(在评论中)添加了非连续渲染,以防止闪烁。但是我面临的问题是,多次按下后退按钮将渲染另一帧。(闪烁的帧之一)。简而言之,这是我的代码结构:

public class GameScreen implements Screen {
    private static final int GAME_RUNNING = 0;
    private static final int GAME_PAUSED = 1;
    private static final int GAME_OVER = 2;
    private static final int GAME_LEVEL_END = 3;
    private int gameState;

    private GdxGame game;

    //create()
    public GameScreen(final GdxGame game) {
        //create all the stuff
    }

    @Override
    public void render(float deltaTime) {
        switch (gameState) {
            case GAME_RUNNING:
                updateRunning(deltaTime);
                break;
            case GAME_PAUSED:
                updatePause(deltaTime);
                break;
            case GAME_OVER:
                updateGameOver();
                break;
        }
    }

    public void updateRunning(float deltaTime) {
        //draw section
        if (gameState == GAME_RUNNING) {
            game.batch.begin();
            //Draw some stuff
            game.batch.end();

            //move section
            handleInput();
        }
    }

    public void updatePause(float deltaTime) {
        //Gdx.graphics.setContinuousRendering(false);
        //resume
        if (Gdx.input.isTouched()) {
            gameState = GAME_RUNNING;
            //Gdx.graphics.setContinuousRendering(true);
            return;
        }
    }

    private void handleInput() {
        //catch back button
        Gdx.input.setCatchBackKey(true);
        if (Gdx.input.isKeyJustPressed(Input.Keys.BACK)) {
            gameState = GAME_PAUSED;
            return;
        }
    }
}