一文详解Android FCM接入

class ExampleActivity : AppCompatActivity() {
    private val requestPermissionCode = this.hashCode()
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU && 
                ActivityCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED) {
                // 申请通知权限
                ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.POST_NOTIFICATIONS), requestPermissionCode)
            }
    }
    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
            if (requestCode == requestPermissionCode) {
                // 处理回调结果
            }
    }
}

class ExampleActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val notificationManager = NotificationManagerCompat.from(this)
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val applicationInfo = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
                packageManager.getApplicationInfo(packageName, PackageManager.ApplicationInfoFlags.of(0))
            } else {
                packageManager.getApplicationInfo(packageName, 0)
            }
            val appLabel = getText(applicationInfo.labelRes)
            val exampleNotificationChannel = NotificationChannel("example_notification_channel", "$appLabel Notification Channel", NotificationManager.IMPORTANCE_DEFAULT).apply {
                description = "The description of this notification channel"
            }
            notificationManager.createNotificationChannel(minigameChannel)
        }
    }
}

class ExampleActivity : AppCompatActivity() {
    private var notificationId = 0
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate()
        val notificationManager = NotificationManagerCompat.from(this)
        ...
        if (notificationManager.areNotificationsEnabled()) {
            val notification = NotificationCompat.Builder(this, "example_notification_channel")
                //设置小图标
                .setSmallIcon(R.drawable.notification)
                // 设置通知标题
                .setContentTitle("title")
                // 设置通知内容
                .setContentText("content")
                // 设置是否自动取消
                .setAutoCancel(true)
                // 设置通知声音
                .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                // 设置点击的事件
                .setContentIntent(PendingIntent.getActivity(this, requestCode, packageManager.getLaunchIntentForPackage(packageName)?.apply { putExtra("routes", "From notification") }, PendingIntent.FLAG_IMMUTABLE))
                .build()
            // notificationId可以记录下来
            // 可以通过notificationId对通知进行相应的操作
            notificationManager.notify(notificationId, notification)
        }
    }
}

buildscript {
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        ...
        classpath("com.google.gms:google-services:4.3.14")
    }
}

dependencies {
    // 使用Firebase Andorid bom（官方推荐）
    implementation platform('com.google.firebase:firebase-bom:31.1.0') 
    implementation 'com.google.firebase:firebase-messaging' 
    // 不使用bom
    implementation 'com.google.firebase:firebase-messaging:23.1.1'
}

class ExampleFCMService : FirebaseMessagingService() {
    override fun onNewToken(token: String) {
        super.onNewToken(token)
        // FCM生成的令牌，可以用于标识用户的身份
    }
    override fun onMessageReceived(message: RemoteMessage) {
        super.onMessageReceived(message)
        // 接收到推送消息时回调此方法
    }

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <application>
        <service
            android:name="com.minigame.fcmnotificationsdk.MinigameFCMService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>
    </application>
</manifest>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <application>
        <!--修改默认图标-->
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_icon"
            android:resource="@drawable/notification" />
        <!--修改默认颜色-->
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_color"
            android:resource="@color/color_blue_0083ff" />
    </application>
</manifest>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <application>
        <meta-data
            android:name="firebase_messaging_auto_init_enabled"
            android:value="false" />
        <!--如果同时引入了谷歌分析，需要配置此参数-->
        <meta-data
            android:name="firebase_analytics_collection_enabled"
            android:value="false" />
    </application>
</manifest>

FirebaseMessaging.getInstance().isAutoInitEnabled = true
// 如果同时禁止了Google Analytics，需要配置如下代码
FirebaseAnalytics.getInstance(context).setAnalyticsCollectionEnabled(true)