Java tutorial
/* * Copyright (C) 2015 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 com.google.android.apps.santatracker; import com.google.android.apps.santatracker.R; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.api.GoogleApiClient; import com.google.android.gms.common.api.ResultCallback; import com.google.android.gms.wearable.DataApi; import com.google.android.gms.wearable.DataEvent; import com.google.android.gms.wearable.DataEventBuffer; import com.google.android.gms.wearable.DataMap; import com.google.android.gms.wearable.DataMapItem; import com.google.android.gms.wearable.Wearable; import com.google.android.gms.wearable.WearableListenerService; import com.google.android.apps.santatracker.common.NotificationConstants; import android.app.PendingIntent; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.NotificationCompat; import android.support.v4.app.NotificationManagerCompat; import android.util.Log; import android.view.Gravity; import static com.google.android.gms.wearable.PutDataRequest.WEAR_URI_SCHEME; /** * A {@link com.google.android.gms.wearable.WearableListenerService} that will be invoked when a * DataItem is added or deleted. The creation of a new DataItem will be interpreted as a request to * create a new notification and the removal of that DataItem is interpreted as a request to * dismiss that notification. */ public class WearNotificationService extends WearableListenerService implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, ResultCallback<DataApi.DeleteDataItemsResult> { private static final String TAG = "NotificationUpdate"; private GoogleApiClient mGoogleApiClient; @Override public void onCreate() { Log.v(TAG, "onCreate()"); super.onCreate(); mGoogleApiClient = new GoogleApiClient.Builder(this).addApi(Wearable.API).addConnectionCallbacks(this) .addOnConnectionFailedListener(this).build(); } /** * Dismisses the phone notification, via a {@link android.app.PendingIntent} that is triggered * when the user dismisses the local notification. Deleting the corresponding data item * notifies * the {@link com.google.android.gms.wearable.WearableListenerService} on the phone that the * matching notification on the phone side should be removed. */ @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.v(TAG, "onStartCommand()"); if (null != intent) { String action = intent.getAction(); if (NotificationConstants.ACTION_DISMISS.equals(action)) { // We need to dismiss the wearable notification. We delete the data item that // created the notification and that is how we inform the phone. mGoogleApiClient.connect(); } } return super.onStartCommand(intent, flags, startId); } @Override public void onDataChanged(DataEventBuffer dataEvents) { Log.v(TAG, "onDataChanged"); for (DataEvent dataEvent : dataEvents) { if (dataEvent.getType() == DataEvent.TYPE_CHANGED) { DataMap dataMap = DataMapItem.fromDataItem(dataEvent.getDataItem()).getDataMap(); String content = dataMap.getString(NotificationConstants.KEY_CONTENT); String path = dataEvent.getDataItem().getUri().getPath(); if (NotificationConstants.TAKEOFF_PATH.equals(path)) { Log.v(TAG, "building takeoff notification"); buildTakeoffNotification(content); } } else if (dataEvent.getType() == DataEvent.TYPE_DELETED) { // There's only one notification shown at a time, so just dismiss it. NotificationManagerCompat.from(this).cancelAll(); } } } /** * Builds a simple notification on the wearable. */ private void buildTakeoffNotification(String content) { Log.v(TAG, "buildTakeoffNotification: " + content); NotificationCompat.Builder builder = new NotificationCompat.Builder(this).setContentText(content) .setSmallIcon(R.drawable.ic_launcher); // TODO workaround for bug for always displaying notifications builder.setContentTitle(""); Bitmap largeIcon = BitmapFactory.decodeResource(this.getResources(), R.drawable.santa_notification_background); builder.setLargeIcon(largeIcon); //We want to know when the notification is dismissed, so we can dismiss it on the phone. Intent dismissIntent = new Intent(NotificationConstants.ACTION_DISMISS); dismissIntent.putExtra(NotificationConstants.KEY_NOTIFICATION_ID, NotificationConstants.NOTIFICATION_ID); PendingIntent pendingIntent = PendingIntent.getService(this, 0, dismissIntent, PendingIntent.FLAG_UPDATE_CURRENT); builder.setDeleteIntent(pendingIntent); //Post the notification. NotificationManagerCompat.from(this).notify(NotificationConstants.NOTIFICATION_ID, builder.build()); } /** * The only data the wearable sends to the phone is that its notification has been dismissed, * so if the service has been launched by an Intent, we update the DataAPI to let the phone * know to clear its corresponding notification. */ @Override public void onConnected(Bundle bundle) { final Uri dataItemUri = new Uri.Builder().scheme(WEAR_URI_SCHEME).path(NotificationConstants.TAKEOFF_PATH) .build(); Log.d(TAG, "Deleting Uri: " + dataItemUri.toString()); Wearable.DataApi.deleteDataItems(mGoogleApiClient, dataItemUri).setResultCallback(this); } @Override public void onConnectionSuspended(int i) { } @Override public void onConnectionFailed(ConnectionResult connectionResult) { } @Override public void onResult(DataApi.DeleteDataItemsResult deleteDataItemsResult) { if (!deleteDataItemsResult.getStatus().isSuccess()) { Log.e(TAG, "dismissWearableNotification(): failed to delete DataItem"); } mGoogleApiClient.disconnect(); } }