Use Firebase Job Dispatcher for long running tasks.

- Provides compatiability with Android-O
- Show good practice on pre Android-O

Change-Id: I75edd3e911b6a599f9bc12435fe17c1e3a83b35a

messaging/app/build.gradle

@@ -2,7 +2,7 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 25
-    buildToolsVersion "25.0.0"
+    buildToolsVersion '25.0.2'
 
     defaultConfig {
         applicationId "com.google.firebase.quickstart.fcm"
@@ -28,14 +28,15 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:25.0.1'
+    compile 'com.android.support:appcompat-v7:25.3.0'
 
     compile 'com.google.firebase:firebase-messaging:10.2.0'
+    compile 'com.firebase:firebase-jobdispatcher:0.5.2'
 
     // Testing dependencies
     androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
     androidTestCompile 'com.android.support.test:runner:0.5'
-    androidTestCompile 'com.android.support:support-annotations:25.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.3.0'
 }
 
 apply plugin: 'com.google.gms.google-services'

messaging/app/src/main/AndroidManifest.xml

@@ -44,6 +44,12 @@
             </intent-filter>
         </service>
         <!-- [END firebase_iid_service] -->
+        <service android:name=".MyJobService"
+                 android:exported="false">
+            <intent-filter>
+                <action android:name="com.firebase.jobdispatcher.ACTION_EXECUTE"/>
+            </intent-filter>
+        </service>
     </application>
 
 </manifest>

messaging/app/src/main/java/com/google/firebase/quickstart/fcm/MyFirebaseMessagingService.java

@@ -25,6 +25,10 @@
 import android.support.v4.app.NotificationCompat;
 import android.util.Log;
 
+import com.firebase.jobdispatcher.Constraint;
+import com.firebase.jobdispatcher.FirebaseJobDispatcher;
+import com.firebase.jobdispatcher.GooglePlayDriver;
+import com.firebase.jobdispatcher.Job;
 import com.google.firebase.messaging.FirebaseMessagingService;
 import com.google.firebase.messaging.RemoteMessage;
 
@@ -57,6 +61,15 @@ public void onMessageReceived(RemoteMessage remoteMessage) {
         // Check if message contains a data payload.
         if (remoteMessage.getData().size() > 0) {
             Log.d(TAG, "Message data payload: " + remoteMessage.getData());
+
+            if (/* Check if data needs to be processed by long running job */ true) {
+                // For long-running tasks (10 seconds or more) use Firebase Job Dispatcher.
+                scheduleJob();
+            } else {
+                // Handle message within 10 seconds
+                handleNow();
+            }
+
         }
 
         // Check if message contains a notification payload.
@@ -69,6 +82,27 @@ public void onMessageReceived(RemoteMessage remoteMessage) {
     }
     // [END receive_message]
 
+    /**
+     * Schedule a job using FirebaseJobDispatcher.
+     */
+    private void scheduleJob() {
+        // [START dispatch_job]
+        FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(this));
+        Job myJob = dispatcher.newJobBuilder()
+                .setService(MyJobService.class)
+                .setTag("my-job-tag")
+                .build();
+        dispatcher.schedule(myJob);
+        // [END dispatch_job]
+    }
+
+    /**
+     * Handle time allotted to BroadcastReceivers.
+     */
+    private void handleNow() {
+        Log.d(TAG, "Short lived task is done.");
+    }
+
     /**
      * Create and show a simple notification containing the received FCM message.
      *

messaging/app/src/main/java/com/google/firebase/quickstart/fcm/MyJobService.java

@@ -0,0 +1,24 @@
+package com.google.firebase.quickstart.fcm;
+
+import android.util.Log;
+
+import com.firebase.jobdispatcher.JobParameters;
+import com.firebase.jobdispatcher.JobService;
+
+public class MyJobService extends JobService {
+
+    private static final String TAG = "MyJobService";
+
+    @Override
+    public boolean onStartJob(JobParameters jobParameters) {
+        Log.d(TAG, "Performing long running task in scheduled job");
+        // TODO(developer): add long running task here.
+        return false;
+    }
+
+    @Override
+    public boolean onStopJob(JobParameters jobParameters) {
+        return false;
+    }
+
+}