com.android.volley.Network Java Examples

public Crossbow(Context context, CrossbowComponents crossbowComponents) {
    this.context = context.getApplicationContext();
    this.requestQueue = crossbowComponents.provideRequestQueue();
    this.imageLoader = crossbowComponents.provideImageLoader();
    this.imageCache = crossbowComponents.provideImageCache();

    Cache cache = crossbowComponents.provideCache();
    Network network = crossbowComponents.provideNetwork();

    FileDelivery fileDelivery = new BasicFileDelivery();
    FileStack fileStack = new BasicFileStack(context);
    fileQueue = new FileQueue(fileDelivery, fileStack);
    fileQueue.start();
    fileImageLoader = new FileImageLoader(fileQueue, imageCache);

    syncDispatcher = new SyncDispatcher(cache, network);
}
 

@Test
public void publicMethods() throws Exception {
    // Catch-all test to find API-breaking changes.
    assertNotNull(
            RequestQueue.class.getConstructor(
                    Cache.class, Network.class, int.class, ResponseDelivery.class));
    assertNotNull(RequestQueue.class.getConstructor(Cache.class, Network.class, int.class));
    assertNotNull(RequestQueue.class.getConstructor(Cache.class, Network.class));

    assertNotNull(RequestQueue.class.getMethod("start"));
    assertNotNull(RequestQueue.class.getMethod("stop"));
    assertNotNull(RequestQueue.class.getMethod("getSequenceNumber"));
    assertNotNull(RequestQueue.class.getMethod("getCache"));
    assertNotNull(RequestQueue.class.getMethod("cancelAll", RequestQueue.RequestFilter.class));
    assertNotNull(RequestQueue.class.getMethod("cancelAll", Object.class));
    assertNotNull(RequestQueue.class.getMethod("add", Request.class));
    assertNotNull(RequestQueue.class.getDeclaredMethod("finish", Request.class));
}
 

private RequestQueue newRequestQueue(Context context) {
    // define cache folder
    File rootCache = context.getExternalCacheDir();
    if (rootCache == null) {
        rootCache = context.getCacheDir();
    }

    File cacheDir = new File(rootCache, DEFAULT_CACHE_DIR);
    cacheDir.mkdirs();

    HttpStack stack = new HurlStack();
    Network network = new BasicNetwork(stack);
    DiskBasedCache diskBasedCache = new DiskBasedCache(cacheDir, DEFAULT_DISK_USAGE_BYTES);
    RequestQueue queue = new RequestQueue(diskBasedCache, network);
    queue.start();

    return queue;
}
 

@Test public void publicMethods() throws Exception {
    // Catch-all test to find API-breaking changes.
    assertNotNull(RequestQueue.class.getConstructor(Cache.class, Network.class, int.class,
            ResponseDelivery.class));
    assertNotNull(RequestQueue.class.getConstructor(Cache.class, Network.class, int.class));
    assertNotNull(RequestQueue.class.getConstructor(Cache.class, Network.class));

    assertNotNull(RequestQueue.class.getMethod("start"));
    assertNotNull(RequestQueue.class.getMethod("stop"));
    assertNotNull(RequestQueue.class.getMethod("getSequenceNumber"));
    assertNotNull(RequestQueue.class.getMethod("getCache"));
    assertNotNull(RequestQueue.class.getMethod("cancelAll", RequestQueue.RequestFilter.class));
    assertNotNull(RequestQueue.class.getMethod("cancelAll", Object.class));
    assertNotNull(RequestQueue.class.getMethod("add", Request.class));
    assertNotNull(RequestQueue.class.getDeclaredMethod("finish", Request.class));
}
 

private static RequestQueue newRequestQueue(Context context) {

        // On HC+ use HurlStack which is based on HttpURLConnection. Otherwise fall back on
        // AndroidHttpClient (based on Apache DefaultHttpClient) which should no longer be used
        // on newer platform versions where HttpURLConnection is simply better.
        Network network = new BasicNetwork(Utils.hasHoneycomb() ? new HurlStack() : new HttpClientStack(AndroidHttpClient.newInstance(Utils.getUserAgent(context))));

        Cache cache = new DiskBasedCache(getDiskCacheDir(context, CACHE_DIR), DEFAULT_DISK_USAGE_BYTES);
        RequestQueue queue = new RequestQueue(cache, network);
        queue.start();
        return queue;
    }
 

public static void initializeInstance(Cache cache, Network network, int threadPoolSize, ResponseDelivery delivery, int connectionTimeout) {
  INSTANCE = new ApiInvoker(cache, network, threadPoolSize, delivery, connectionTimeout);
  setUserAgent("OpenAPI-Generator/1.0.0/android");

  // Setup authentications (key: authentication name, value: authentication).
  INSTANCE.authentications = new HashMap<String, Authentication>();
  INSTANCE.authentications.put("api_key", new ApiKeyAuth("header", "api_key"));
  // TODO: comment out below as OAuth does not exist
  //INSTANCE.authentications.put("petstore_auth", new OAuth());
  // Prevent the authentications from being modified.
  INSTANCE.authentications = Collections.unmodifiableMap(INSTANCE.authentications);
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack   An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

public WaspTest() throws Exception {
  File cacheDir = new File(context.getCacheDir(), "volley");
  Network network = new BasicNetwork(new OkHttpStack(new OkHttpClient()));
  ResponseDelivery delivery = new ExecutorDelivery(executor);
  requestQueue = new RequestQueue(new DiskBasedCache(cacheDir), network, 4, delivery);
  requestQueue.start();

  server.start();
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = null;
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack(userAgent);
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskLruBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

/**
 * 不带缓存的requestQueue
 * newNoCacheRequestQueue
 * @param context
 * @param stack
 * @return
 * @since 3.5
 */
public static RequestQueue newNoCacheRequestQueue(Context context) {
    String userAgent = null;
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    HttpStack stack = null;
    if (Build.VERSION.SDK_INT >= 9) {
        stack = new HurlStack(userAgent);
    } else {
        // Prior to Gingerbread, HttpUrlConnection was unreliable.
        // See:
        // http://android-developers.blogspot.com/2011/09/androids-http-clients.html
        stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new NoCache(), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link android.content.Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();

        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

public static RequestQueue newRequestQueue(Context context, HttpStack stack, String dir, int cacheSize) {
    File cacheDir = new File(context.getCacheDir(), dir);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();

        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir, cacheSize), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls
 * {@link RequestQueue#start()} on it.
 * 
 * @param context
 *            A {@link Context} to use for creating the cache dir.
 * @param stack
 *            An {@link HttpStack} to use for the network, or null for
 *            default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();

        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack(userAgent);
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See:
            // http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network, new BasicUrlRewriter());
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link android.content.Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

public static void initializeInstance(Cache cache, Network network, int threadPoolSize, ResponseDelivery delivery, int connectionTimeout) {
  INSTANCE = new ApiInvoker(cache, network, threadPoolSize, delivery, connectionTimeout);
  setUserAgent("OpenAPI-Generator/1.0.0/android");

  // Setup authentications (key: authentication name, value: authentication).
  INSTANCE.authentications = new HashMap<String, Authentication>();
  INSTANCE.authentications.put("jenkins_auth", new HttpBasicAuth());
  INSTANCE.authentications.put("jwt_auth", new ApiKeyAuth("header", "Authorization"));
  // Prevent the authentications from being modified.
  INSTANCE.authentications = Collections.unmodifiableMap(INSTANCE.authentications);
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

public synchronized static LimitingRequestQueue getInstance(Context context) {
    if (null == mInstance) {
        Network network = new BasicNetwork(new HurlStack());
        // 10MB disk cache
        Cache cache = new DiskBasedCache(context.getCacheDir(), 1024 * 1024 * 10);

        mInstance = new LimitingRequestQueue(cache, network);
        mInstance.start();
    }
    return mInstance;
}
 

public static void initializeInstance(Cache cache, Network network, int threadPoolSize, ResponseDelivery delivery, int connectionTimeout) {
  INSTANCE = new ApiInvoker(cache, network, threadPoolSize, delivery, connectionTimeout);
  setUserAgent("OpenAPI-Generator/1.0.0/android");

  // Setup authentications (key: authentication name, value: authentication).
  INSTANCE.authentications = new HashMap<String, Authentication>();
  INSTANCE.authentications.put("aemAuth", new HttpBasicAuth());
  // Prevent the authentications from being modified.
  INSTANCE.authentications = Collections.unmodifiableMap(INSTANCE.authentications);
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

/**
 * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
 *
 * @param context A {@link Context} to use for creating the cache dir.
 * @param stack An {@link HttpStack} to use for the network, or null for default.
 * @return A started {@link RequestQueue} instance.
 */
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
    File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);

    String userAgent = "volley/0";
    try {
        String packageName = context.getPackageName();
        PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
        userAgent = packageName + "/" + info.versionCode;
    } catch (NameNotFoundException e) {
    }

    if (stack == null) {
        if (Build.VERSION.SDK_INT >= 9) {
            stack = new HurlStack();
        } else {
            // Prior to Gingerbread, HttpUrlConnection was unreliable.
            // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
            stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
        }
    }

    Network network = new BasicNetwork(stack);

    RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
    queue.start();

    return queue;
}
 

@Override
public Network onCreateNetwork(HttpStack httpStack) {
    return new PlayNetwork(getContext());
}
 

public RequestQueue onCreateRequestQueue(Cache cache, Network network) {
    RequestQueue requestQueue = new RequestQueue(cache, network);
    requestQueue.start();
    return requestQueue;
}
 

public Network onCreateNetwork(HttpStack httpStack) {
    return new BasicNetwork(httpStack);
}
 

@Override
public RequestQueue onCreateRequestQueue(Cache cache, Network network) {
    RequestQueue requestQueue = new RequestQueue(cache, network, 3);
    requestQueue.start();
    return requestQueue;
}