在android JSON中获取多个URL

Question

我想获取多个网址并将其转换为单个jsonArra y ...以下是代码。

public class MainActivity {

    private static final String URL1 = "http://192.168.1.5/contact1.php";
    private static final String URL2 = "http://192.168.1.5/contact2.php";

 @Override

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        fetchContacts();
    }

private void fetchContacts() {

        JsonArrayRequest request = new JsonArrayRequest(URL,
                new Response.Listener<JSONArray>() {
                    @Override
                    public void onResponse(JSONArray response) {
                        if (response == null) {
                            Toast.makeText(getApplicationContext(), "Couldn't fetch the contacts! Please try again.", Toast.LENGTH_LONG).show();
                            return;
                        }

                        List<Contact> items = new Gson().fromJson(response.toString(), new TypeToken<List<Contact>>() {
                        }.getType());

                        // adding contacts to contacts list
                        contactList.clear();
                        contactList.addAll(items);

                        // refreshing recycler view
                        mAdapter.notifyDataSetChanged();
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                // error in getting json
                Log.e(TAG, "Error: " + error.getMessage());
                Toast.makeText(getApplicationContext(), "Error: " + error.getMessage(), Toast.LENGTH_SHORT).show();
            }
        });

        MyApplication.getInstance().addToRequestQueue(request);
    }

如何将URL1和URL2传递到fetchContacts()函数？