TweetsRequest.java

public class TweetsRequest extends JsonObjectRequest {

	public TweetsRequest(String url, Listener<JSONObject> listener, 
			ErrorListener errorListener, List<NameValuePair> params) {
		super(url + "?" + URLEncodedUtils.format(params, "UTF-8"), 
			null, listener, errorListener);
	}

	@Override
	public Map<String, String> getHeaders() throws AuthFailureError {
		Map<String, String> headers = new HashMap<String, String>();
		String auth = "Bearer " + TwitterValues.ACCESS_TOKEN;
		headers.put("Authorization", auth);
		return headers;
	}
}