Java tutorial
/** * This file is part of Words With Crosses. * * Copyright (C) 2009-2010 Robert Cooper * Copyright (C) 2013 Adam Rosenfield * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.haw3d.jadvalKalemat.versions; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.io.IOException; import java.io.OutputStream; import java.net.URISyntaxException; import java.net.URL; import java.util.Map; import java.util.Map.Entry; import java.util.logging.Logger; import java.util.zip.GZIPInputStream; import java.util.zip.Inflater; import java.util.zip.InflaterInputStream; import android.app.Activity; import android.content.Context; import android.content.SharedPreferences; import android.preference.PreferenceManager; import android.view.MenuItem; import android.view.SubMenu; import android.view.View; import com.haw3d.jadvalKalemat.jadvalKalematApplication; import com.haw3d.jadvalKalemat.io.IO; import com.haw3d.jadvalKalemat.net.AbstractDownloader; import com.haw3d.jadvalKalemat.net.HTTPException; import org.apache.http.Header; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.protocol.HttpContext; public class DefaultUtil implements AndroidVersionUtils { protected static final Logger LOG = Logger.getLogger("com.haw3d.jadvalKalemat"); protected Context context; protected SharedPreferences prefs; protected HttpParams mHttpParams; protected DefaultHttpClient mHttpClient; public DefaultUtil() { // Set default connect and recv timeouts to 30 seconds mHttpParams = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(mHttpParams, 30000); HttpConnectionParams.setSoTimeout(mHttpParams, 30000); mHttpClient = new DefaultHttpClient(mHttpParams); } public void setContext(Context context) { this.context = context; prefs = PreferenceManager.getDefaultSharedPreferences(context); } public HttpClient getHttpClient() { return mHttpClient; } public void downloadFile(URL url, Map<String, String> headers, File destination, boolean notification, String title) throws IOException { downloadFile(url, headers, destination, notification, title, null); } public void downloadFile(URL url, Map<String, String> headers, File destination, boolean notification, String title, HttpContext httpContext) throws IOException { String scrubbedUrl = AbstractDownloader.scrubUrl(url); File tempFile = new File(jadvalKalematApplication.TEMP_DIR, destination.getName()); LOG.info("DefaultUtil: Downloading " + scrubbedUrl + " ==> " + tempFile); FileOutputStream fos = new FileOutputStream(tempFile); try { downloadHelper(url, scrubbedUrl, headers, httpContext, fos); } finally { fos.close(); } if (!tempFile.equals(destination) && !tempFile.renameTo(destination)) { throw new IOException("Failed to rename " + tempFile + " to " + destination); } LOG.info("DefaultUtil: Download succeeded: " + scrubbedUrl); } public String downloadToString(URL url, Map<String, String> headers) throws IOException { return downloadToString(url, headers, null); } public String downloadToString(URL url, Map<String, String> headers, HttpContext httpContext) throws IOException { String scrubbedUrl = AbstractDownloader.scrubUrl(url); ByteArrayOutputStream baos = new ByteArrayOutputStream(); downloadHelper(url, scrubbedUrl, headers, httpContext, baos); return new String(baos.toByteArray()); } private void downloadHelper(URL url, String scrubbedUrl, Map<String, String> headers, HttpContext httpContext, OutputStream output) throws IOException { HttpGet httpget; try { httpget = new HttpGet(url.toURI()); } catch (URISyntaxException e) { e.printStackTrace(); throw new IOException("Invalid URL: " + url); } httpget.setHeader("Accept-Encoding", "gzip, deflate"); for (Entry<String, String> e : headers.entrySet()) { httpget.setHeader(e.getKey(), e.getValue()); } HttpResponse response = mHttpClient.execute(httpget, httpContext); int status = response.getStatusLine().getStatusCode(); HttpEntity entity = response.getEntity(); if (status != 200) { LOG.warning("Download failed: " + scrubbedUrl + " status=" + status); if (entity != null) { entity.consumeContent(); } throw new HTTPException(status); } if (entity != null) { // If we got a compressed entity, create the proper decompression // stream wrapper InputStream content = entity.getContent(); Header contentEncoding = entity.getContentEncoding(); if (contentEncoding != null) { if ("gzip".equals(contentEncoding.getValue())) { content = new GZIPInputStream(content); } else if ("deflate".equals(contentEncoding.getValue())) { content = new InflaterInputStream(content, new Inflater(true)); } } try { IO.copyStream(content, output); } finally { entity.consumeContent(); } } } public void onFileDownloaded(long id, boolean successful, int status) { } public void finishOnHomeButton(Activity a) { } public void holographic(Activity playActivity) { } public void onActionBarWithText(MenuItem a) { } public void onActionBarWithText(SubMenu reveal) { } public View onActionBarCustom(Activity a, int id) { return null; } public void hideWindowTitle(Activity a) { } public void hideActionBar(Activity a) { } }