am 7e421365: am 1a551b16: am 6f680f52: Displaying Bitmaps Efficiently Training...

@Override

protected void onCreate(Bundle savedInstanceState) {

    ...

    // Get memory class of this device, exceeding this amount will throw an

    // OutOfMemory exception.

    final int memClass = ((ActivityManager) context.getSystemService(

            Context.ACTIVITY_SERVICE)).getMemoryClass();

    // Get max available VM memory, exceeding this amount will throw an

    // OutOfMemory exception. Stored in kilobytes as LruCache takes an

    // int in its constructor.

    final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);

    // Use 1/8th of the available memory for this memory cache.

    final int cacheSize = 1024 * 1024 * memClass / 8;

    final int cacheSize = maxMemory / 8;

    mMemoryCache = new LruCache<String, Bitmap>(cacheSize) {

        @Override

        protected int sizeOf(String key, Bitmap bitmap) {

            // The cache size will be measured in bytes rather than number of items.

            return bitmap.getByteCount();

            // The cache size will be measured in kilobytes rather than

            // number of items.

            return bitmap.getByteCount() / 1024;

        }

    };

    ...