Java tutorial
/** * Copyright (C) 2014 Open Whisper Systems * * 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 org.thoughtcrime.securesms.jobs; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.graphics.BitmapFactory; import android.support.annotation.NonNull; import android.support.v4.app.NotificationCompat; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GoogleApiAvailability; import org.thoughtcrime.securesms.gcm.FcmUtil; import org.thoughtcrime.securesms.jobmanager.Data; import org.thoughtcrime.securesms.jobmanager.Job; import org.thoughtcrime.securesms.jobmanager.impl.NetworkConstraint; import org.thoughtcrime.securesms.logging.Log; import org.thoughtcrime.securesms.PlayServicesProblemActivity; import org.thoughtcrime.securesms.R; import org.thoughtcrime.securesms.dependencies.InjectableType; import org.thoughtcrime.securesms.notifications.NotificationChannels; import org.thoughtcrime.securesms.transport.RetryLaterException; import org.thoughtcrime.securesms.util.TextSecurePreferences; import org.whispersystems.libsignal.util.guava.Optional; import org.whispersystems.signalservice.api.SignalServiceAccountManager; import org.whispersystems.signalservice.api.push.exceptions.NonSuccessfulResponseCodeException; import java.io.IOException; import java.util.concurrent.TimeUnit; import javax.inject.Inject; public class FcmRefreshJob extends BaseJob implements InjectableType { public static final String KEY = "FcmRefreshJob"; private static final String TAG = FcmRefreshJob.class.getSimpleName(); @Inject SignalServiceAccountManager textSecureAccountManager; public FcmRefreshJob() { this(new Job.Parameters.Builder().setQueue("FcmRefreshJob").addConstraint(NetworkConstraint.KEY) .setMaxAttempts(1).setLifespan(TimeUnit.MINUTES.toMillis(5)).setMaxInstances(1).build()); } private FcmRefreshJob(@NonNull Job.Parameters parameters) { super(parameters); } @Override public @NonNull Data serialize() { return Data.EMPTY; } @Override public @NonNull String getFactoryKey() { return KEY; } @Override public void onRun() throws Exception { if (TextSecurePreferences.isFcmDisabled(context)) return; Log.i(TAG, "Reregistering FCM..."); int result = GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(context); if (result != ConnectionResult.SUCCESS) { notifyFcmFailure(); } else { Optional<String> token = FcmUtil.getToken(); if (token.isPresent()) { String oldToken = TextSecurePreferences.getFcmToken(context); if (!token.get().equals(oldToken)) { int oldLength = oldToken != null ? oldToken.length() : -1; Log.i(TAG, "Token changed. oldLength: " + oldLength + " newLength: " + token.get().length()); } else { Log.i(TAG, "Token didn't change."); } textSecureAccountManager.setGcmId(token); TextSecurePreferences.setFcmToken(context, token.get()); TextSecurePreferences.setFcmTokenLastSetTime(context, System.currentTimeMillis()); TextSecurePreferences.setWebsocketRegistered(context, true); } else { throw new RetryLaterException(new IOException("Failed to retrieve a token.")); } } } @Override public void onCanceled() { Log.w(TAG, "GCM reregistration failed after retry attempt exhaustion!"); } @Override public boolean onShouldRetry(Exception throwable) { if (throwable instanceof NonSuccessfulResponseCodeException) return false; return true; } private void notifyFcmFailure() { Intent intent = new Intent(context, PlayServicesProblemActivity.class); PendingIntent pendingIntent = PendingIntent.getActivity(context, 1122, intent, PendingIntent.FLAG_CANCEL_CURRENT); NotificationCompat.Builder builder = new NotificationCompat.Builder(context, NotificationChannels.FAILURES); builder.setSmallIcon(R.drawable.icon_notification); builder.setLargeIcon( BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_action_warning_red)); builder.setContentTitle(context.getString(R.string.GcmRefreshJob_Permanent_Signal_communication_failure)); builder.setContentText( context.getString(R.string.GcmRefreshJob_Signal_was_unable_to_register_with_Google_Play_Services)); builder.setTicker(context.getString(R.string.GcmRefreshJob_Permanent_Signal_communication_failure)); builder.setVibrate(new long[] { 0, 1000 }); builder.setContentIntent(pendingIntent); ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)).notify(12, builder.build()); } public static final class Factory implements Job.Factory<FcmRefreshJob> { @Override public @NonNull FcmRefreshJob create(@NonNull Parameters parameters, @NonNull Data data) { return new FcmRefreshJob(parameters); } } }