Java tutorial
/* * The MIT License (MIT) * Copyright (c) 2014 Lemberg Solutions Limited * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.ls.util.internal; import com.android.volley.Network; import com.android.volley.NetworkError; import com.android.volley.NoConnectionError; import com.android.volley.RequestQueue; import com.android.volley.TimeoutError; import com.android.volley.VolleyError; import com.android.volley.toolbox.BasicNetwork; import com.android.volley.toolbox.DiskBasedCache; import com.android.volley.toolbox.HttpClientStack; import com.android.volley.toolbox.HttpStack; import com.android.volley.toolbox.HurlStack; import org.apache.http.client.HttpClient; import org.apache.http.impl.client.DefaultHttpClient; import android.annotation.TargetApi; import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.net.http.AndroidHttpClient; import android.os.Build; import android.os.Environment; import android.support.annotation.NonNull; import java.io.File; import java.net.HttpURLConnection; /** * Created by Lemberg-i5 on 07.10.2014. */ public class VolleyResponseUtils { public static boolean isNetworkingError(VolleyError volleyError) { if (volleyError.networkResponse == null) { if (volleyError instanceof TimeoutError) { return true; } if (volleyError instanceof NoConnectionError) { return true; } if (volleyError instanceof NetworkError) { return true; } } return false; } public static boolean isAuthError(VolleyError volleyError) { return volleyError != null && volleyError.networkResponse != null && volleyError.networkResponse.statusCode == HttpURLConnection.HTTP_UNAUTHORIZED; } public static RequestQueue defaultRequestQueue(Context context) { return newRequestQueue(context, null, -1); } public static RequestQueue newRequestQueue(Context context, HttpStack stack, int maxDiskCacheSizeBytes) { final VolleyHelperFactory.IVolleyHelper helper = VolleyHelperFactory.newHelper(); final File cacheDir = helper.getBestCacheDir(context); if (stack == null) { stack = helper.createHttpStack(context); } final Network network = new BasicNetwork(stack); final DiskBasedCache diskCache; if (maxDiskCacheSizeBytes < 0) { diskCache = new DiskBasedCache(cacheDir); } else { diskCache = new DiskBasedCache(cacheDir, maxDiskCacheSizeBytes); } final RequestQueue queue = new RequestQueue(diskCache, network, 1); queue.start(); return queue; } }