Java tutorial
/* * Cos android client for Cozy Cloud * * Copyright (C) 2016 Hamza Abdelkebir * * 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 eu.codeplumbers.cosi.services; import android.app.IntentService; import android.app.NotificationManager; import android.content.Context; import android.content.Intent; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.os.Environment; import android.support.v4.content.WakefulBroadcastReceiver; import android.support.v7.app.NotificationCompat; import android.util.Base64; import android.util.Log; import org.greenrobot.eventbus.EventBus; import java.io.BufferedInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.ProtocolException; import java.net.URL; import java.util.ArrayList; import eu.codeplumbers.cosi.R; import eu.codeplumbers.cosi.db.models.Device; import eu.codeplumbers.cosi.db.models.File; import eu.codeplumbers.cosi.services.events.FileSyncEvent; import eu.codeplumbers.cosi.utils.Constants; import static eu.codeplumbers.cosi.utils.Constants.REFRESH; import static eu.codeplumbers.cosi.utils.Constants.SERVICE_ERROR; /** * Created by thor on 10/29/16. */ public class CosiFileDownloadService extends IntentService { private String authHeader; private String fileUrl; private int notification_id = 1340; private NotificationManager mNotifyManager; private NotificationCompat.Builder mBuilder; private boolean mSyncRunning; private boolean stopSync; public CosiFileDownloadService() { super("CosiFileDownloadService"); mSyncRunning = false; } public CosiFileDownloadService(String name) { super(name); } @Override protected void onHandleIntent(Intent intent) { // Do the task here Log.i(CosiFileDownloadService.class.getName(), "Cosi Service running"); // Release the wake lock provided by the WakefulBroadcastReceiver. WakefulBroadcastReceiver.completeWakefulIntent(intent); Device device = Device.registeredDevice(); // cozy register device url fileUrl = device.getUrl() + "/ds-api/data/"; // concatenate username and password with colon for authentication final String credentials = device.getLogin() + ":" + device.getPassword(); authHeader = "Basic " + Base64.encodeToString(credentials.getBytes(), Base64.NO_WRAP); showNotification(); if (isNetworkAvailable()) { try { ArrayList<String> fileStrings = intent.getStringArrayListExtra("fileToDownload"); for (int i = 0; i < fileStrings.size(); i++) { File file = File.load(File.class, Long.valueOf(fileStrings.get(i))); String binaryRemoteId = file.getRemoteId(); if (!binaryRemoteId.isEmpty()) { mBuilder.setProgress(100, 0, false); mBuilder.setContentText("Downloading file: " + file.getName()); mNotifyManager.notify(notification_id, mBuilder.build()); URL urlO = null; try { urlO = new URL(fileUrl + binaryRemoteId + "/binaries/file"); HttpURLConnection conn = (HttpURLConnection) urlO.openConnection(); conn.setConnectTimeout(5000); conn.setRequestProperty("Content-Type", "application/json; charset=UTF-8"); conn.setRequestProperty("Authorization", authHeader); conn.setDoInput(true); conn.setRequestMethod("GET"); conn.connect(); int lenghtOfFile = conn.getContentLength(); // read the response int status = conn.getResponseCode(); if (status >= HttpURLConnection.HTTP_BAD_REQUEST) { EventBus.getDefault() .post(new FileSyncEvent(SERVICE_ERROR, conn.getResponseMessage())); stopSelf(); } else { int count = 0; InputStream in = new BufferedInputStream(conn.getInputStream(), 8192); java.io.File newFile = file.getLocalPath(); if (!newFile.exists()) { newFile.createNewFile(); } // Output stream to write file OutputStream output = new FileOutputStream(Environment.getExternalStorageDirectory() + java.io.File.separator + Constants.APP_DIRECTORY + java.io.File.separator + "files" + file.getPath() + "/" + file.getName()); byte data[] = new byte[1024]; long total = 0; while ((count = in.read(data)) != -1) { total += count; mBuilder.setProgress(lenghtOfFile, (int) total, false); mBuilder.setContentText("Downloading file: " + file.getName()); mNotifyManager.notify(notification_id, mBuilder.build()); // writing data to file output.write(data, 0, count); } // flushing output output.flush(); // closing streams output.close(); in.close(); file.setDownloaded(true); file.save(); } } catch (MalformedURLException e) { EventBus.getDefault().post(new FileSyncEvent(SERVICE_ERROR, e.getLocalizedMessage())); stopSelf(); } catch (ProtocolException e) { EventBus.getDefault().post(new FileSyncEvent(SERVICE_ERROR, e.getLocalizedMessage())); stopSelf(); } catch (IOException e) { EventBus.getDefault().post(new FileSyncEvent(SERVICE_ERROR, e.getLocalizedMessage())); stopSelf(); } } } mNotifyManager.cancel(notification_id); EventBus.getDefault().post(new FileSyncEvent(REFRESH, "Sync OK")); } catch (Exception e) { e.printStackTrace(); mSyncRunning = false; EventBus.getDefault().post(new FileSyncEvent(SERVICE_ERROR, e.getLocalizedMessage())); } } else { mSyncRunning = false; EventBus.getDefault().post(new FileSyncEvent(SERVICE_ERROR, "No Internet connection")); mBuilder.setContentText("Sync failed because no Internet connection was available"); mNotifyManager.notify(notification_id, mBuilder.build()); } } private boolean isNetworkAvailable() { ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService( Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo(); return activeNetworkInfo != null && activeNetworkInfo.isConnected(); } public void showNotification() { //PendingIntent pendingIntent = PendingIntent.getActivity(this, notification_id, this,PendingIntent.FLAG_UPDATE_CURRENT); mNotifyManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); mBuilder = new NotificationCompat.Builder(this); mBuilder.setContentTitle(getString(R.string.lbl_files)) .setContentText(getString(R.string.lbl_files_downloading)).setSmallIcon(R.drawable.ic_fa_file) //.addAction(R.drawable.ic_action_cancel, "Dismiss", getPendingIntent()) .setOngoing(true); } }