Tutorial by Examples

final TextView mTextView = (TextView) findViewById(R.id.text); ... // Instantiate the RequestQueue. RequestQueue queue = Volley.newRequestQueue(this); String url ="http://www.google.com"; // Request a string response from the provided URL. StringRequest stringRequest = new String...

// assume a Request and RequestQueue have already been initialized somewhere above public static final String TAG = "SomeTag"; // Set the tag on the request. request.setTag(TAG); // Add the request to the RequestQueue. mRequestQueue.add(request); // To cancel this specific re...

There are several additional attributes that the Volley NetworkImageView adds to the standard ImageView. However, these attributes can only be set in code. The following is an example of how to make an extension class that will pick up the attributes from your XML layout file and apply them to the N...

final TextView mTxtDisplay = (TextView) findViewById(R.id.txtDisplay); ImageView mImageView; String url = "http://ip.jsontest.com/"; final JsonObjectRequest jsObjRequest = new JsonObjectRequest (Request.Method.GET, url, null, new Response.Listener<JSONObject>() { ...

If you need to add custom headers to your volley requests, you can't do this after initialisation, as the headers are saved in a private variable. Instead, you need to override the getHeaders() method of Request.class as such: new JsonObjectRequest(REQUEST_METHOD, REQUEST_URL, REQUEST_BODY, RESP_L...

public class VolleyErrorHelper { /** * Returns appropriate message which is to be displayed to the user * against the specified error object. * * @param error * @param context * @return */ public static String ...

For the sake of this example, let us assume that we have a server for handling the POST requests that we will be making from our Android app: // User input data. String email = "[email protected]"; String password = "123"; // Our server URL for handling POST requests. String UR...

Add the gradle dependency in app-level build.gradle compile 'com.android.volley:volley:1.0.0' Also, add the android.permission.INTERNET permission to your app's manifest. **Create Volley RequestQueue instance singleton in your Application ** public class InitApplication extends Application { ...

you can custom class below one private final String PROTOCOL_CONTENT_TYPE = String.format("application/json; charset=%s", PROTOCOL_CHARSET); public BooleanRequest(int method, String url, String requestBody, Response.Listener<Boolean> listener, Response.ErrorListener errorList...

The default requests integrated in volley don't allow to pass a JSONArray as request body in a POST request. Instead, you can only pass a JSON object as a parameter. However, instead of passing a JSON object as a parameter to the request constructor, you need to override the getBody() method of the...