Volley Singleton & Image Loader

[sondosaabed]

RequestQueue queue = MySingleton.getInstance(this.getApplicationContext()).
    getRequestQueue();

MySingleton.getInstance(this).addToRequestQueue(stringRequest);

https://github.com/CypressNorth/Volley-Singleton/blob/master/VolleySingleton.java

https://google.github.io/volley/requestqueue.html

`public class MySingleton {
private static MySingleton instance;
private RequestQueue requestQueue;
private ImageLoader imageLoader;
private static Context ctx;

private MySingleton(Context context) {
    ctx = context;
    requestQueue = getRequestQueue();

    imageLoader = new ImageLoader(requestQueue,
            new ImageLoader.ImageCache() {
        private final LruCache<String, Bitmap>
                cache = new LruCache<String, Bitmap>(20);

        @Override
        public Bitmap getBitmap(String url) {
            return cache.get(url);
        }

        @Override
        public void putBitmap(String url, Bitmap bitmap) {
            cache.put(url, bitmap);
        }
    });
}

public static synchronized MySingleton getInstance(Context context) {
    if (instance == null) {
        instance = new MySingleton(context);
    }
    return instance;
}

public RequestQueue getRequestQueue() {
    if (requestQueue == null) {
        // getApplicationContext() is key, it keeps you from leaking the
        // Activity or BroadcastReceiver if someone passes one in.
        requestQueue = Volley.newRequestQueue(ctx.getApplicationContext());
    }
    return requestQueue;
}

public <T> void addToRequestQueue(Request<T> req) {
    getRequestQueue().add(req);
}

public ImageLoader getImageLoader() {
    return imageLoader;
}

}