| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.volley.toolbox; |
| |
| import android.content.Context; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.net.http.AndroidHttpClient; |
| import android.os.Build; |
| import androidx.annotation.NonNull; |
| import com.android.volley.Network; |
| import com.android.volley.RequestQueue; |
| import java.io.File; |
| |
| public class Volley { |
| |
| /** Default on-disk cache directory. */ |
| private static final String DEFAULT_CACHE_DIR = "volley"; |
| |
| /** |
| * 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 A {@link BaseHttpStack} to use for the network, or null for default. |
| * @return A started {@link RequestQueue} instance. |
| */ |
| @NonNull |
| public static RequestQueue newRequestQueue(Context context, BaseHttpStack stack) { |
| BasicNetwork network; |
| if (stack == null) { |
| if (Build.VERSION.SDK_INT >= 9) { |
| network = new BasicNetwork(new HurlStack()); |
| } else { |
| // Prior to Gingerbread, HttpUrlConnection was unreliable. |
| // See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html |
| // At some point in the future we'll move our minSdkVersion past Froyo and can |
| // delete this fallback (along with all Apache HTTP code). |
| String userAgent = "volley/0"; |
| try { |
| String packageName = context.getPackageName(); |
| PackageInfo info = |
| context.getPackageManager().getPackageInfo(packageName, /* flags= */ 0); |
| userAgent = packageName + "/" + info.versionCode; |
| } catch (NameNotFoundException e) { |
| } |
| |
| network = |
| new BasicNetwork( |
| new HttpClientStack(AndroidHttpClient.newInstance(userAgent))); |
| } |
| } else { |
| network = new BasicNetwork(stack); |
| } |
| |
| return newRequestQueue(context, network); |
| } |
| |
| /** |
| * 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. |
| * @deprecated Use {@link #newRequestQueue(Context, BaseHttpStack)} instead to avoid depending |
| * on Apache HTTP. This method may be removed in a future release of Volley. |
| */ |
| @Deprecated |
| @SuppressWarnings("deprecation") |
| @NonNull |
| public static RequestQueue newRequestQueue(Context context, HttpStack stack) { |
| if (stack == null) { |
| return newRequestQueue(context, (BaseHttpStack) null); |
| } |
| return newRequestQueue(context, new BasicNetwork(stack)); |
| } |
| |
| @NonNull |
| private static RequestQueue newRequestQueue(Context context, Network network) { |
| final Context appContext = context.getApplicationContext(); |
| // Use a lazy supplier for the cache directory so that newRequestQueue() can be called on |
| // main thread without causing strict mode violation. |
| DiskBasedCache.FileSupplier cacheSupplier = |
| new DiskBasedCache.FileSupplier() { |
| private File cacheDir = null; |
| |
| @Override |
| public File get() { |
| if (cacheDir == null) { |
| cacheDir = new File(appContext.getCacheDir(), DEFAULT_CACHE_DIR); |
| } |
| return cacheDir; |
| } |
| }; |
| RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheSupplier), 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. |
| * @return A started {@link RequestQueue} instance. |
| */ |
| @NonNull |
| public static RequestQueue newRequestQueue(Context context) { |
| return newRequestQueue(context, (BaseHttpStack) null); |
| } |
| } |