Volley Request Manager
Volley Request Manager article
- Easy and reusable interface
- Possibility to use different queues
- Background and volley default queues implementations
- Possibility to create your own queues
- Factory that will help to create your own queues
- Callback that handle result in background and deliver result in UI thread
- Possibility to use default Volley Listeners
- Load Images with different Image Loaders
- Factory that will help to create your own Image Loader
- Possibility to clear Image Loader memory cache
#####Initialize manager :
RequestManager.initializeWith(contex);#####Choose the best way that you need :
//Queue using custom listener
RequestManager.queue()
.useBackgroundQueue()
.addRequest(new TestJsonRequest(), mRequestCallback)
.start();
//Queue using default volley Response and Error listener
RequestManager
.queue()
.useBackgroundQueue()
.addRequest(new TestJsonRequest(), mListener, mErrorListener)
.start();
//load image
RequestManager
.loader()
.useDefaultLoader()
.obtain()
.get(
"http://farm6.staticflickr.com/5475/10375875123_75ce3080c6_b.jpg",
mImageListener
);
//clear cache
RequestManager
.loader()
.useDefaultLoader()
.clearCache(); #####Custom listener implementation :
private RequestCallback mRequestCallback = new RequestCallback<JSONObject, Void>() {
@Override
public Void doInBackground(JSONObject response) {
//triggers on called thread
L.i(response.toString());
return null;
}
@Override
public void onPostExecute(Void result) {
//always triggers on UI thread
Toast.makeText(getApplicationContext(), "Toast from UI", Toast.LENGTH_SHORT).show();
}
@Override
public void onError(VolleyError error) {
//works as volleys Response.ErrorListener
L.e(error.toString());
}
};#####Request implementation example:
public class TestJsonRequest extends RequestInterface<JSONObject, Void> {
@Override
public Request create() {
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();
Request request = new JsonObjectRequest(
Request.Method.GET,
url,
null,
//if you want to use Callbacks provided
//via Request Manager interface
//use useInterfaceListener() and useInterfaceErrorListener()
//instead of creating new listenets here
useInterfaceListener(),
useInterfaceErrorListener());
return request;
}
}