[Firebase] 04 - Push Notification

From: Push Notification Introduction - Android Firebase

記得更新google-services.json文件。

 

發送Message模擬器：

 

而後是兩個問題：

• 消息推送給全部人　mitchtabian/FirebaseOnClickPushNotification
• 消息推送給個別人　mitchtabian/FirebasePushNotificationTopics

 

---

 

1. 首先，它是一個服務：

<service
　　android:name=".FirebaseMessagingService">
　　<intent-filter>
　　　　<action android:name="com.google.firebase.MESSAGING_EVENT"/>
　　</intent-filter>
</service>

服務代碼：

public class FirebaseMessagingService extends com.google.firebase.messaging.FirebaseMessagingService  {
    private static final String TAG = "FirebaseMessagingServic";
    public FirebaseMessagingService() {
    }


    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        String title   = remoteMessage.getNotification().getTitle();
        String message = remoteMessage.getNotification().getBody();

        Log.d(TAG, "onMessageReceived: Message Received: \n" + "Title: " + title + "\n" + "Message: " + message);

        sendNotification(title,message);　　// -->
    }

    @Override
    public void onDeletedMessages() {

    }

    private void sendNotification(String title,String messageBody) {

        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle(title)
                .setContentText(messageBody)
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
    }
}

 

2. 收到json格式的消息，解析之，點擊跳入指定的頁面（activity）:

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {　　// 函數基本重寫

        // Check if message contains a data payload.
        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());
            try {
                JSONObject data    = new JSONObject(remoteMessage.getData());
                String jsonMessage = data.getString("extra_information");
                Log.d(TAG, "onMessageReceived: \n" + "Extra Information: " + jsonMessage);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            String title        = remoteMessage.getNotification().getTitle();       //get title
            String message      = remoteMessage.getNotification().getBody();        //get message
            String click_action = remoteMessage.getNotification().getClickAction(); //get click_action

            Log.d(TAG, "Message Notification Title: " + title);
            Log.d(TAG, "Message Notification Body: " + message);
            Log.d(TAG, "Message Notification click_action: " + click_action);

            sendNotification(title, message, click_action);
        }
    }

 

Body內容

Json格式消息

if-else指定跳入的activity：

    private void sendNotification(String title, String messageBody, String click_action) {

        Intent intent;
        if(click_action.equals("SOMEACTIVITY")){
            intent = new Intent(this, SomeActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        }
        else if(click_action.equals("MAINACTIVITY")){
            intent = new Intent(this, MainActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        }else{
            intent = new Intent(this, MainActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        }

        ... ...
    }

 

Headers內容

Project Overview --> Setttings --> CLOUD MESSAGING --> "Server key"

 

 

3. 根據message的topic進行消息推送

判斷消息的topic代碼：

import com.google.firebase.messaging.FirebaseMessaging;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        FirebaseMessaging.getInstance().subscribeToTopic("NEWYORK_WEATHER");
        //FirebaseMessaging.getInstance().unsubscribeFromTopic("NEWYORK_WEATHER");
    }
}

若是接收消息，則繼續執行。

    @Override
    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());

        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            String title   = remoteMessage.getNotification().getTitle(); //get title
            String message = remoteMessage.getNotification().getBody(); //get message

            Log.d(TAG, "Message Notification Title: " + title);
            Log.d(TAG, "Message Notification Body: " + message);

            sendNotification(title, message);
        }
    }