Malformed URL Exception while using Volley
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1

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Getting the Error below while using Android-Volley in android. The same problem remains unsolved here too...

08-27 14:46:18.779  26990-26990/com.rev.volleydemo D/VOLLEY﹕ http://api.androidhive.info/volley/person_object.json
08-27 14:46:18.879  26990-27004/com.rev.volleydemo E/Volley﹕ [619] NetworkDispatcher.run: Unhandled exception java.lang.RuntimeException: Bad URL null
    java.lang.RuntimeException: Bad URL null
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:151)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:114)
     Caused by: java.net.MalformedURLException
            at java.net.URL.<init>(URL.java:154)
            at java.net.URL.<init>(URL.java:127)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:102)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:97)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:114)

public class AppController extends Application {

    public static final String TAG = AppController.class
            .getSimpleName();

    private RequestQueue mRequestQueue;
    private ImageLoader mImageLoader;

    private static AppController mInstance;

    @Override
    public void onCreate() {
        super.onCreate();
        mInstance = this;
    }

    public static synchronized AppController getInstance() {
        return mInstance;
    }

    public RequestQueue getRequestQueue() {
        if (mRequestQueue == null) {
            mRequestQueue = Volley.newRequestQueue(getApplicationContext());
        }

        return mRequestQueue;
    }

    public ImageLoader getImageLoader() {
        getRequestQueue();
        if (mImageLoader == null) {
            mImageLoader = new ImageLoader(this.mRequestQueue,
                    new BitmapCache());
        }
        return this.mImageLoader;
    }

    public <T> void addToRequestQueue(Request<T> req, String tag) {
        // set the default tag if tag is empty
        req.setTag(TextUtils.isEmpty(tag) ? TAG : tag);
        getRequestQueue().add(req);
    }

    public <T> void addToRequestQueue(Request<T> req) {
        req.setTag(TAG);
        getRequestQueue().add(req);
    }

    public void cancelPendingRequests(Object tag) {
        if (mRequestQueue != null) {
            mRequestQueue.cancelAll(tag);
        }
    }
}

public class MainActivity extends AppCompatActivity {

    public final String URL = new String("http://api.androidhive.info/volley/person_object.json");

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.d("VOLLEY", URL);

        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Method.POST, null, URL, new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                Log.d("VOLLEY", response.toString());
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Log.d("VOLLEY", error.toString());
            }
        });

        AppController.getInstance().addToRequestQueue(jsonObjectRequest, "JSON_OBJ");
    }
}

Osmious answered 27/8, 2015 at 9:23 Comment(0)
F
5

The error lies here:

JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Method.POST, null, URL, new Response.Listener<JSONObject>() {

The second parameter of the constructor should be the URL, not the third one.

See here: JsonObjectRequest

Forelimb answered 27/8, 2015 at 9:25 Comment(5)
Tried it => JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Method.POST, URL, null, listener, errorListener); but it says can't resolve constructorOsmious
Hi! Which Volley library use? Jar file or compile in build.gradle? There are some differences between them.Compositor
Tried replacing null with " " (empty string) .... Now its working fine... is it proper way of doingOsmious
used graddle compile 'com.mcxiaoke.volley:library:1.0.18'Osmious
Thanks @Forelimb @ BNK :)Osmious

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