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POHow to pause and resume in LibGDX using the back key?
 

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    <p>I'm creating a game using LibGDX. Now I have two problems.</p> <p>First, I'm trying to catch back key so that the game will pause. I'm already calling the <code>Gdx.input.setCatchBackKey(true)</code> method in my <code>Game</code> class. Here is the code :</p> <pre><code>public class CvSGame extends Game { public Preferences prefs; @Override public void create() { Gdx.input.setCatchBackKey(true); prefs = Gdx.app.getPreferences("game_pref"); //setScreen(new SplashScreen(this)); //setScreen(new HomeScreen(this)); //setScreen(new GameScreen(this)); GamePlay.initialized(this); } } </code></pre> <p><code>GamePlay.initialized</code> is a method to set the <code>Game</code> with a <code>GameScreen</code> which implements <code>Screen</code> and <code>InputProcessor</code>.</p> <p>In the <code>GameScreen</code>, I already call <code>setInputProcessor</code>. The code for <code>GameScreen</code> is :</p> <pre><code>public class GameScreen implements Screen, InputProcessor{ CvSGame parent; public GameScreen(CvSGame pParent){ parent = pParent; Gdx.input.setInputProcessor(this); } @Override public void show() { } @Override public void resize(int width, int height) { } @Override public void render(float delta) { } @Override public void hide() { } @Override public void pause() { } @Override public void resume() { } @Override public void dispose() { } @Override public boolean keyDown(int keycode) { if(keycode == Keys.BACK) { pauseGame(); } return false; } @Override public boolean keyUp(int keycode) { return false; } @Override public boolean keyTyped(char character) { return false; } @Override public boolean touchDown(int screenX, int screenY, int pointer, int button) { return false; } @Override public boolean touchUp(int screenX, int screenY, int pointer, int button) { return false; } @Override public boolean touchDragged(int screenX, int screenY, int pointer) { return false; } @Override public boolean mouseMoved(int screenX, int screenY) { return false; } @Override public boolean scrolled(int amount) { return false; } private void pauseGame(){ GamePlay.gameState = GamePlay.PAUSED; } } </code></pre> <p>I think, if the Back button on my Android device is pressed, it will call the <code>keyDown</code> method and the method <code>pauseGame</code> will be called. </p> <p>But, that's not happening. My game is exiting and the <code>keyDown</code> method is not called (I'm already try to log a message if method keyDown is called, but the message never appear).</p> <p>The second problem I have is caused by pausing game with the method <code>pause()</code>. I think if the home button or the device receives a call, the method <code>pause</code> in <code>GameScreen</code> will be called. So, I think if I want to pause my game when the home button is pressed, I call the method <code>pauseGame</code> in method <code>pause</code>. And it works well. But the problem comes after I press back button so the game will quit. After the game quits and I try to start it again, my texture is not loaded.</p> <p>By the way, currently I'm not using <code>AssetManager</code> but call a method to load assets in the constructor.</p>
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