Home | History | Annotate | Download | only in geofencing 
      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.wearable.geofencing;
     18 
     19 import static com.example.android.wearable.geofencing.Constants.ACTION_CHECK_IN;
     20 import static com.example.android.wearable.geofencing.Constants.ACTION_DELETE_DATA_ITEM;
     21 import static com.example.android.wearable.geofencing.Constants.ANDROID_BUILDING_ID;
     22 import static com.example.android.wearable.geofencing.Constants.KEY_GEOFENCE_ID;
     23 import static com.example.android.wearable.geofencing.Constants.NOTIFICATION_ID;
     24 import static com.example.android.wearable.geofencing.Constants.TAG;
     25 import static com.example.android.wearable.geofencing.Constants.YERBA_BUENA_ID;
     26 
     27 import android.app.Notification;
     28 import android.app.Notification.Action;
     29 import android.app.NotificationManager;
     30 import android.app.PendingIntent;
     31 import android.content.Intent;
     32 import android.graphics.Bitmap;
     33 import android.graphics.BitmapFactory;
     34 import android.net.Uri;
     35 import android.text.Spannable;
     36 import android.text.SpannableString;
     37 import android.text.style.RelativeSizeSpan;
     38 import android.util.Log;
     39 
     40 import com.google.android.gms.common.api.GoogleApiClient;
     41 import com.google.android.gms.wearable.DataEvent;
     42 import com.google.android.gms.wearable.DataEventBuffer;
     43 import com.google.android.gms.wearable.DataItem;
     44 import com.google.android.gms.wearable.DataMap;
     45 import com.google.android.gms.wearable.Wearable;
     46 import com.google.android.gms.wearable.WearableListenerService;
     47 
     48 /**
     49  * Listens to DataItem events on the wearable device.
     50  */
     51 public class HomeListenerService extends WearableListenerService {
     52 
     53     private GoogleApiClient mGoogleApiClient;
     54 
     55     @Override
     56     public void onCreate() {
     57         super.onCreate();
     58         mGoogleApiClient = new GoogleApiClient.Builder(this.getApplicationContext())
     59                 .addApi(Wearable.API)
     60                 .build();
     61         mGoogleApiClient.connect();
     62     }
     63 
     64     /**
     65      * Listen for DataItems added/deleted from the geofence service running on the companion.
     66      */
     67     @Override
     68     public void onDataChanged(DataEventBuffer dataEvents) {
     69         if (Log.isLoggable(TAG, Log.DEBUG)) {
     70             Log.d(TAG, "onDataChanged: " + dataEvents + " for " + getPackageName());
     71         }
     72         for (DataEvent event : dataEvents) {
     73             if (event.getType() == DataEvent.TYPE_DELETED) {
     74                 cancelNotificationForDataItem(event.getDataItem());
     75             } else if (event.getType() == DataEvent.TYPE_CHANGED) {
     76                 // The user has entered a geofence - post a notification!
     77                 String geofenceId = DataMap.fromByteArray(event.getDataItem().getData())
     78                         .getString(KEY_GEOFENCE_ID);
     79                 postNotificationForGeofenceId(geofenceId, event.getDataItem().getUri());
     80             }
     81         }
     82         dataEvents.close();
     83     }
     84 
     85     /**
     86      * Deletes the check-in notification when the DataItem is deleted.
     87      * @param dataItem Used only for logging in this sample, but could be used to identify which
     88      *                 notification to cancel (in this case, there is at most 1 notification).
     89      */
     90     private void cancelNotificationForDataItem(DataItem dataItem) {
     91         if (Log.isLoggable(TAG, Log.VERBOSE)) {
     92             Log.v(TAG, "onDataItemDeleted:DataItem=" + dataItem.getUri());
     93         }
     94         ((NotificationManager) getSystemService(NOTIFICATION_SERVICE)).cancel(NOTIFICATION_ID);
     95     }
     96 
     97     /**
     98      * Posts a local notification for the given geofence id, with an option to check in.
     99      * @param geofenceId The geofence id that the user has triggered.
    100      * @param dataItemUri The Uri for the DataItem that triggered this notification. Used to delete
    101      *                    this DataItem when the notification is dismissed.
    102      */
    103     private void postNotificationForGeofenceId(String geofenceId, Uri dataItemUri) {
    104         // Use the geofenceId to determine the title and background of the check-in notification.
    105         // A SpannableString is used for the notification title for resizing capabilities.
    106         SpannableString checkInTitle;
    107         Bitmap notificationBackground;
    108         if (ANDROID_BUILDING_ID.equals(geofenceId)) {
    109             checkInTitle = new SpannableString(getText(R.string.android_building_title));
    110             notificationBackground =
    111                     BitmapFactory.decodeResource(getResources(), R.drawable.android_building);
    112         } else if (YERBA_BUENA_ID.equals(geofenceId)) {
    113             checkInTitle = new SpannableString(getText(R.string.yerba_buena_title));
    114             notificationBackground =
    115                     BitmapFactory.decodeResource(getResources(), R.drawable.yerba_buena);
    116         } else {
    117             Log.e(TAG, "Unrecognized geofence id: " + geofenceId);
    118             return;
    119         }
    120         // Resize the title to avoid truncation.
    121         checkInTitle.setSpan(new RelativeSizeSpan(0.8f), 0, checkInTitle.length(),
    122                 Spannable.SPAN_POINT_MARK);
    123 
    124         Intent checkInOperation =
    125                 new Intent(this, CheckInAndDeleteDataItemsService.class).setData(dataItemUri);
    126         PendingIntent checkInIntent = PendingIntent.getService(this, 0,
    127                 checkInOperation.setAction(ACTION_CHECK_IN), PendingIntent.FLAG_CANCEL_CURRENT);
    128         PendingIntent deleteDataItemIntent = PendingIntent.getService(this, 1,
    129                 checkInOperation.setAction(ACTION_DELETE_DATA_ITEM),
    130                 PendingIntent.FLAG_CANCEL_CURRENT);
    131         // This action will be embedded into the notification.
    132         Action checkInAction = new Action(R.drawable.ic_action_check_in,
    133                 getText(R.string.check_in_prompt), checkInIntent);
    134 
    135         Notification notification = new Notification.Builder(this)
    136                 .setContentTitle(checkInTitle)
    137                 .setContentText(getText(R.string.check_in_prompt))
    138                 .setSmallIcon(R.drawable.ic_launcher)
    139                 .setDeleteIntent(deleteDataItemIntent)
    140                 .extend(new Notification.WearableExtender()
    141                         .setBackground(notificationBackground)
    142                         .addAction(checkInAction)
    143                         .setContentAction(0)
    144                         .setHintHideIcon(true))
    145                 .setLocalOnly(true)
    146                 .build();
    147 
    148         ((NotificationManager) getSystemService(NOTIFICATION_SERVICE))
    149                 .notify(NOTIFICATION_ID, notification);
    150     }
    151 
    152 }
    153