在活动之间来回导航时，如何释放图像并避免outOfMemory exc-n [android]

Question

I have a children tale app - 18 pages, each page is an activity with a background image, short story and sound for every word (textView) in a story, and some animations.

I notice, when i go to next page, the memory is consumed;

it is also consumed when i go back to previous page(activity)! I get outOfMemory exception when the app reaches about 182MB usage - this can happen anytime.

• How do I release images if the image is a background for RelativeLayout in every page ?

• every time i navigate to next page, the previous is destroyed - should not the images it loads be released from memory as well?

   public class Page8 extends Activity{ ImageView forward ; ImageView backward ; RelativeLayout main ; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.page8); forward = (ImageView)findViewById(R.id.to_page_9); backward = (ImageView)findViewById(R.id.to_page_7); forward.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if (event.getAction() != MotionEvent.ACTION_DOWN) return false; Intent intent = new Intent(Page8.this, Page9.class); startActivity(intent); return true; } }); backward.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if (event.getAction() != MotionEvent.ACTION_DOWN) return false; Intent intent = new Intent(Page8.this, Page7.class); startActivity(intent); return true; } }); } @Override public void onStop(){ main = (RelativeLayout)findViewById(R.id.main) ; main.releaseMemory()?; } } 

Answer 1

我认为您有高清图像，应该优化图像并缩小图像。