Android Volley

Android Volley

AuthRequestSample.java

public class AuthRequestSample {

    public void send(RequestQueue requestQueue) {

        Uri.Builder uri = new Uri.Builder();
        uri.scheme("http");
        uri.authority("httpbin.org");
        uri.path("basic-auth/user/passwd");
        String url = uri.build().toString();

        StringRequest request = new StringRequest(
                Request.Method.GET,
                url,
                listener,
                errorListener) {

            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                return createBasicAuthHeader("user", "passwd");
            }
        };

        requestQueue.add(request);
    }

    Map<String, String> createBasicAuthHeader(String username, String password) {
        Map<String, String> headerMap = new HashMap<String, String>();

        String credentials = username + ":" + password;
        String base64EncodedCredentials =
                Base64.encodeToString(credentials.getBytes(), Base64.NO_WRAP);
        headerMap.put("Authorization", "Basic " + base64EncodedCredentials);

        return headerMap;
    }

    Response.Listener<String> listener = new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            L.d("Success Response: " + response.toString());
        }
    };

    Response.ErrorListener errorListener = new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            if (error.networkResponse != null) {
                L.d("Error Response code: " + error.networkResponse.statusCode);
            }

        }
    };
}

GetRequestSample.java

public class GetRequestSample {

    public void send(RequestQueue requestQueue) {
        Uri.Builder uri = new Uri.Builder();
        uri.scheme("http");
        uri.authority("httpbin.org");
        uri.path("get");
        uri.appendQueryParameter("name", "Jon Doe");
        uri.appendQueryParameter("age", "21");
        String url = uri.build().toString();

        StringRequest request = new StringRequest(
                Request.Method.GET,
                url,
                listener,
                errorListener);

        requestQueue.add(request);
    }

    Response.Listener<String> listener = new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            L.d("Success Response: " + response.toString());
        }
    };

    Response.ErrorListener errorListener = new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            if (error.networkResponse != null) {
                L.d("Error Response code: " + error.networkResponse.statusCode);
            }

        }
    };
}

JSONRequestSample.java

public class JSONRequestSample {

    public void send(RequestQueue requestQueue) {
        Uri.Builder uri = new Uri.Builder();
        uri.scheme("http");
        uri.authority("httpbin.org");
        uri.path("get");
        uri.appendQueryParameter("name", "Jon Doe");
        uri.appendQueryParameter("age", "21");

        String url = uri.build().toString();

        // JsonArrayRequest if root element is JSON array
        JsonObjectRequest request = new JsonObjectRequest(
                Request.Method.GET,
                url,
                null,
                listener,
                errorListener);

        requestQueue.add(request);
    }

    Response.Listener<JSONObject> listener = new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {
            L.d("Success Response: " + response.toString());
        }
    };

    Response.ErrorListener errorListener = new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            if (error.networkResponse != null) {
                L.d("Error Response code: " + error.networkResponse.statusCode);
            }

        }
    };

}

PostRequestSample.java

public class PostRequestSample {

    public void send(RequestQueue requestQueue) {
        Uri.Builder uri = new Uri.Builder();
        uri.scheme("http");
        uri.authority("httpbin.org");
        uri.path("post");
        String url = uri.build().toString();

        StringRequest request = new StringRequest(
                Request.Method.POST,
                url,
                listener,
                errorListener) {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {

                Map<String, String> map = new HashMap<String, String>();
                map.put("name", "Jon Doe");
                map.put("age", "21");

                return map;
            }
        };

        requestQueue.add(request);
    }

    Response.Listener<String> listener = new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            L.d("Success Response: " + response.toString());
        }
    };

    Response.ErrorListener errorListener = new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            if (error.networkResponse != null) {
                L.d("Error Response code: " + error.networkResponse.statusCode);
            }

        }
    };
}

StatusRequestSample.java

public class StatusRequestSample {

    public void send(RequestQueue requestQueue) {
        Uri.Builder uri = new Uri.Builder();
        uri.scheme("http");
        uri.authority("httpbin.org");
        uri.path("status/" + HttpStatus.SC_METHOD_NOT_ALLOWED);
        String url = uri.build().toString();

        StringRequest request = new StringRequest(
                Request.Method.GET,
                url,
                listener,
                errorListener);

        requestQueue.add(request);
    }

    Response.Listener<String> listener = new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            L.d( "Success Response: " + response.toString());
        }
    };

    Response.ErrorListener errorListener = new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            L.d("Error Response code: " + error.getMessage());
        }
    };
}

TimeoutRequestSample.java

public class TimeoutRequestSample {

    /**
     * Delays responding for 5 seconds. Default request timeout time is 2.5 seconds. Request should
     * fail.
     */
    public void send(RequestQueue requestQueue) {
        Uri.Builder uri = new Uri.Builder();
        uri.scheme("http");
        uri.authority("httpbin.org");
        uri.path("delay/5");
        String url = uri.build().toString();

        StringRequest request = new StringRequest(
                Request.Method.GET,
                url,
                listener,
                errorListener);

        request.setRetryPolicy(
                new DefaultRetryPolicy(
                        DefaultRetryPolicy.DEFAULT_TIMEOUT_MS,
                        DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
                        DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));

        requestQueue.add(request);
    }

    Response.Listener<String> listener = new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            L.d("Success Response: " + response.toString());
        }
    };

    Response.ErrorListener errorListener = new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            if (error.networkResponse != null) {
                L.d("Error Response code: " + error.networkResponse.statusCode);
            }

        }
    };
}