#19 안드로이드 스튜디오 FCM 푸시알림 예제 [ 홍드로이드 ]

<build.gradle (Project)>

// Top-level build file where you can add configuration options common to all sub-projects/modules.
 
buildscript {
    
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.2'
        classpath 'com.google.gms:google-services:3.1.0'
 
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}
 
allprojects {
    repositories {
        google()
        jcenter()
    }
}
 
task clean(type: Delete) {
    delete rootProject.buildDir
}
 

<build.gradle (Project)>

apply plugin: 'com.android.application'
 
android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.pushtest"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
 
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.google.firebase:firebase-messaging:11.0.4'
}
 
apply plugin: 'com.google.gms.google-services'

<AndroidManifest.xml>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.pushtest">
 
    <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>
 
        <service android:name=".FirebaseMessagingService">
            <intent-filter>
 
                <action android:name="com.google.firebase.MESSAGING_EVENT"/>
            </intent-filter>
        </service>

 
    </application>
 
</manifest>

<FirebaseMessagingService.java>

package com.example.pushtest;

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 androidx.annotation.NonNull;
import androidx.core.app.NotificationCompat;

import com.google.firebase.messaging.RemoteMessage;

public class FirebaseMessagingService extends com.google.firebase.messaging.FirebaseMessagingService
{


    /**
     * 푸시 알림 정보를 받아서 메소드로 넘긴다.
     *
     * @param remoteMessage
     */
    @Override
    public void onMessageReceived(@NonNull RemoteMessage remoteMessage)
    {
        sendNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody());
    }


    /**
     * 푸시 알림 정보를 받아서 앱에서 알림을 띄워준다.
     *
     * @param body
     */
    private void sendNotification(String title, String body)
    {
        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 chId = "test";
        Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); // 알림 왔을때 사운드.

        NotificationCompat.Builder notiBuilder = new NotificationCompat.Builder(this, chId)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle(title)
                .setContentText(body)
                .setAutoCancel(true)
                .setSound(soundUri)
                .setContentIntent(pendingIntent);

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

        /* 안드로이드 오레오 버전 대응 */
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
        {
            String chName = "ch name";
            NotificationChannel channel = new NotificationChannel(chId, chName, NotificationManager.IMPORTANCE_HIGH);
            manager.createNotificationChannel(channel);
        }
        manager.notify(0, notiBuilder.build());

    }
}