6.8.11. Methods stopGame and releaseResources

Class CannonGameFragment’s onPause and onDestroy methods (Section 6.7) call class CannonView’s stopGame and releaseResources methods (Fig. 6.17), respectively. Method stopGame (lines 464–468) is called from the main Activity to stop the game when the Activity’s onPause method is called—for simplicity, we don’t store the game’s state in this example. Method releaseResources (lines 471–475) calls the SoundPool’s release method to release the resources associated with the SoundPool.

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463      // stops the game; called by CannonGameFragment's onPause method
464      public void stopGame()
465      {
466         if (cannonThread != null)
467            cannonThread.setRunning(false); // tell thread to terminate
468      }
469
470      // releases resources; called by CannonGame's onDestroy method
471      public void releaseResources()
472      {
473         soundPool.release(); // release all resources used by the SoundPool
474         soundPool = null;
475      }
476

Fig. 6.17 | CannonView methods stopGame and releaseResources.