Java tutorial
/** * Copyright 2014 Google Inc. All Rights Reserved. * * 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 cl.telematica.android.alimentame; /** * Created by Claudio on 07-10-2016. */ import android.app.IntentService; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.graphics.BitmapFactory; import android.graphics.Color; import android.media.RingtoneManager; import android.support.v4.app.NotificationCompat; import android.support.v4.app.TaskStackBuilder; import android.text.TextUtils; import android.util.Log; import com.google.android.gms.location.Geofence; import com.google.android.gms.location.GeofencingEvent; import java.util.ArrayList; import java.util.List; /** * Listener for geofence transition changes. * * Receives geofence transition events from Location Services in the form of an Intent containing * the transition type and geofence id(s) that triggered the transition. Creates a notification * as the output. */ public class GeofenceTransitionsIntentService extends IntentService { protected static final String TAG = "GeofenceTransitionsIS"; /** * This constructor is required, and calls the super IntentService(String) * constructor with the name for a worker thread. */ public GeofenceTransitionsIntentService() { // Use the TAG to name the worker thread. super(TAG); } @Override public void onCreate() { super.onCreate(); } /** * Handles incoming intents. * @param intent sent by Location Services. This Intent is provided to Location * Services (inside a PendingIntent) when addGeofences() is called. */ @Override protected void onHandleIntent(Intent intent) { GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent); if (geofencingEvent.hasError()) { String errorMessage = GeofenceErrorMessages.getErrorString(this, geofencingEvent.getErrorCode()); Log.e(TAG, errorMessage); return; } // Get the transition type. int geofenceTransition = geofencingEvent.getGeofenceTransition(); // Test that the reported transition was of interest. if (geofenceTransition == Geofence.GEOFENCE_TRANSITION_ENTER || geofenceTransition == Geofence.GEOFENCE_TRANSITION_EXIT) { // Get the geofences that were triggered. A single event can trigger multiple geofences. List<Geofence> triggeringGeofences = geofencingEvent.getTriggeringGeofences(); // Get the transition details as a String. String geofenceTransitionDetails = getGeofenceTransitionDetails(this, geofenceTransition, triggeringGeofences); // Send notification and log the transition details. sendNotification(geofenceTransitionDetails); Log.i(TAG, geofenceTransitionDetails); } else { // Log the error. Log.e(TAG, getString(R.string.geofence_transition_invalid_type, geofenceTransition)); } } /** * Gets transition details and returns them as a formatted string. * * @param context The app context. * @param geofenceTransition The ID of the geofence transition. * @param triggeringGeofences The geofence(s) triggered. * @return The transition details formatted as String. */ private String getGeofenceTransitionDetails(Context context, int geofenceTransition, List<Geofence> triggeringGeofences) { String geofenceTransitionString = getTransitionString(geofenceTransition); // Get the Ids of each geofence that was triggered. ArrayList triggeringGeofencesIdsList = new ArrayList(); for (Geofence geofence : triggeringGeofences) { triggeringGeofencesIdsList.add(geofence.getRequestId()); } String triggeringGeofencesIdsString = TextUtils.join(", ", triggeringGeofencesIdsList); return geofenceTransitionString + ": " + triggeringGeofencesIdsString; } /** * Posts a notification in the notification bar when a transition is detected. * If the user clicks the notification, control goes to the MainActivity. */ private void sendNotification(String notificationDetails) { // Create an explicit content Intent that starts the main Activity. Intent notificationIntent = new Intent(getApplicationContext(), MainActivity.class); // Construct a task stack. TaskStackBuilder stackBuilder = TaskStackBuilder.create(this); // Add the main Activity to the task stack as the parent. stackBuilder.addParentStack(MainActivity.class); // Push the content Intent onto the stack. stackBuilder.addNextIntent(notificationIntent); // Get a PendingIntent containing the entire back stack. PendingIntent notificationPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT); // Get a notification builder that's compatible with platform versions >= 4 NotificationCompat.Builder builder = new NotificationCompat.Builder(this); // Define the notification settings. builder.setSmallIcon(R.mipmap.ic_launcher) // In a real app, you may want to use a library like Volley // to decode the Bitmap. .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher)) .setColor(Color.RED).setContentTitle(notificationDetails) .setContentText(getString(R.string.geofence_transition_notification_text)) .setVibrate(new long[] { 100, 250, 100, 500 }) .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)) .setContentIntent(notificationPendingIntent); // Dismiss notification once the user touches it. builder.setAutoCancel(true); // Get an instance of the Notification manager NotificationManager mNotificationManager = (NotificationManager) getSystemService( Context.NOTIFICATION_SERVICE); // Issue the notification mNotificationManager.notify(0, builder.build()); } /** * Maps geofence transition types to their human-readable equivalents. * * @param transitionType A transition type constant defined in Geofence * @return A String indicating the type of transition */ private String getTransitionString(int transitionType) { switch (transitionType) { case Geofence.GEOFENCE_TRANSITION_ENTER: return getString(R.string.geofence_transition_entered); case Geofence.GEOFENCE_TRANSITION_EXIT: return getString(R.string.geofence_transition_exited); default: return getString(R.string.unknown_geofence_transition); } } }