FCM(Firebase Cloud Messaging) 메세지 받기

FCM에 대해서 자세한 설명은 생략.
이미 어느정도 이해하고 왔을 것으로 판단됨. 
소스만 고대로 올려 놓음. 
마시멜로우 기준으로 코딩. 그 이외 버전에서는 작동 안될 수 있음. 

 

MainActivity

package com.norang.firebasesample;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.iid.InstanceIdResult;

public class MainActivity extends AppCompatActivity {

    private TextView tvToken;

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

        FirebaseInstanceId.getInstance().getInstanceId()
        .addOnCompleteListener(new OnCompleteListener() {
            @Override
            public void onComplete(@NonNull Task task) {
                if (!task.isSuccessful()) {
                    Log.w("FCM", "getInstanceId failed", task.getException());
                    return;
                }
                String token = task.getResult().getToken();
                Log.d("Token", token);
                tvToken.setText(token);
            }
        });
    }
}

MainActivity Layout

<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/tvToken" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Token" /> </LinearLayout> </androidx.constraintlayout.widget.ConstraintLayout>

 

FirebaseMessagingService

package com.norang.firebasesample;


import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.util.Log;
import android.graphics.Color;

import androidx.core.app.NotificationCompat;

import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

public class NorangFireBaseMessagingService extends FirebaseMessagingService {
    @Override
    public void onNewToken(String token) {
        Log.d("FCM Log", "Refreshed token: " + token);
    }
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        if (remoteMessage.getNotification() != null) {
            Log.d("FCM Log", "알림 메시지: " + remoteMessage.getNotification().getBody());

            Log.d("FCM Log data", "알림 메시지: " + remoteMessage.getData().get("data1"));
            Log.d("FCM Log data", "알림 메시지: " + remoteMessage.getData().get("data2"));
            Log.d("FCM Log data", "알림 메시지: " + remoteMessage.getData().get("data3"));


            //일반 메세지
            String messageTitle = remoteMessage.getNotification().getTitle();
            String messageBody = remoteMessage.getNotification().getBody();

            //data 영역 읽어오기
//            String messageTitle = remoteMessage.getData().get("data2");
//            String messageBody = remoteMessage.getData().get("data1");


            Intent intent = new Intent(this, MainActivity.class);

            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
            String channelId = "Channel ID";

            Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            
            NotificationCompat.Builder nBuilder =
                    new NotificationCompat.Builder(this, channelId)
                            .setSmallIcon(R.mipmap.ic_launcher)
                            .setContentTitle(messageTitle)
                            .setContentText(messageBody)
                            .setAutoCancel(true)
                            .setSound(defaultSoundUri)
                            //.setColor(Color.YELLOW)  //아이콘 배경에 색상이 들어감
                            .setLights(Color.YELLOW, 1000, 1000)/// 1초 간격으로 깜빡임.  이것도 되다 안되다 함. 젠장할...
                            .setContentIntent(pendingIntent);

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

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                String channelName = "Channel Name";
                NotificationChannel channel = new NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_HIGH);
                notificationManager.createNotificationChannel(channel);
            }
            notificationManager.notify(0, nBuilder.build());
        }
    }
}

AndroidManifest

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.norang.firebasesample"> <uses-permission android:name="android.permission.INTERNET" ></uses-permission> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <!--Notification click할 때 실행할 activity 정의 --> <activity android:name=".NotiActivity"> <intent-filter> <action android:name="NOTI_ACTIVITY"/> <category android:name="android.intent.category.DEFAULT"/> </intent-filter> </activity> <service android:name=".NorangFireBaseMessagingService"> <intent-filter> <action android:name="com.google.firebase.MESSAGING_EVENT" /> </intent-filter> </service> </application> </manifest>