Android Tutorial => Initialising the cache

Example

The Lru Cache will store all the added resources (values) for fast access until it reaches a memory limit, in which case it will drop the less used resource (value) to store the new one.

To initialise the Lru cache you need to provide a maximum memory value. This value depends on your application requirements and in how critical the resource is to keep a smooth app usage. A recommended value for an image gallery, for example, would be 1/8 of your maximum available memory.

Also note that the Lru Cache works on a key-value basis. In the following example, the key is a String and the value is a Bitmap:

int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
int cacheSize = maxMemory / 8;

LruCache<String, Bitmap> = memoryCache = new LruCache<String, Bitmap>(cacheSize) {
    protected int sizeOf(String key, Bitmap bitmap) {
        return bitmap.getByteCount();
    }
};

PDF - Download Android for free

Previous Next

Android

Fastest Entity Framework Extensions

Example

Got any Android Question?

Android

Android LruCache Initialising the cache

Fastest Entity Framework Extensions

Example

Got any Android Question?