Java tutorial
/* * Copyright (C) 2014 The Android Open Source Project * * 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.example.android.recipeassistant; import android.app.Notification; import android.app.Service; import android.content.Intent; import android.graphics.Bitmap; import android.os.Binder; import android.os.IBinder; import android.support.v4.app.NotificationManagerCompat; import android.support.v4.app.NotificationCompat; import java.util.ArrayList; public class RecipeService extends Service { private NotificationManagerCompat mNotificationManager; private Binder mBinder = new LocalBinder(); private Recipe mRecipe; public class LocalBinder extends Binder { RecipeService getService() { return RecipeService.this; } } @Override public void onCreate() { mNotificationManager = NotificationManagerCompat.from(this); } @Override public IBinder onBind(Intent intent) { return mBinder; } @Override public int onStartCommand(Intent intent, int flags, int startId) { if (intent.getAction().equals(Constants.ACTION_START_COOKING)) { createNotification(intent); return START_STICKY; } return START_NOT_STICKY; } private void createNotification(Intent intent) { mRecipe = Recipe.fromBundle(intent.getBundleExtra(Constants.EXTRA_RECIPE)); ArrayList<Notification> notificationPages = new ArrayList<Notification>(); int stepCount = mRecipe.recipeSteps.size(); for (int i = 0; i < stepCount; ++i) { Recipe.RecipeStep recipeStep = mRecipe.recipeSteps.get(i); NotificationCompat.BigTextStyle style = new NotificationCompat.BigTextStyle(); style.bigText(recipeStep.stepText); style.setBigContentTitle( String.format(getResources().getString(R.string.step_count), i + 1, stepCount)); style.setSummaryText(""); NotificationCompat.Builder builder = new NotificationCompat.Builder(this); builder.setStyle(style); notificationPages.add(builder.build()); } NotificationCompat.Builder builder = new NotificationCompat.Builder(this); if (mRecipe.recipeImage != null) { Bitmap recipeImage = Bitmap.createScaledBitmap(AssetUtils.loadBitmapAsset(this, mRecipe.recipeImage), Constants.NOTIFICATION_IMAGE_WIDTH, Constants.NOTIFICATION_IMAGE_HEIGHT, false); builder.setLargeIcon(recipeImage); } builder.setContentTitle(mRecipe.titleText); builder.setContentText(mRecipe.summaryText); builder.setSmallIcon(R.mipmap.ic_notification_recipe); Notification notification = builder .extend(new NotificationCompat.WearableExtender().addPages(notificationPages)).build(); mNotificationManager.notify(Constants.NOTIFICATION_ID, notification); } }