Java 未创建我的通知频道

每当我通过fcm发送通知时

它说它将使用默认的从清单或安卓应用程序，我也提到了我的频道清单作为默认。 它只是说频道不是由应用程序创建的

日志说

W/FirebaseMessaging: Notification Channel requested (message_notification) has not been created by the app. Manifest configuration, or default, value will be used.

这是我的onMessageReceived函数

override fun onMessageReceived(p0: RemoteMessage) {
        super.onMessageReceived(p0)
        sound=Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE+":/ /"+applicationContext.packageName+"/"+R.raw.alert)
        Log.d("notofiction Nul", sound.toString())

        if(p0.notification!=null){

            val title = p0.data["title"]
            val message = p0.data["body"]
            Log.d("notottg",title+message)
            buildNotificationChannel()
 if(buildNotificationChannel()){
                generateNotification(title!!,message!!)
            }

        }
        else{
            val title = p0.data["title"]
            val message = p0.data["body"]
            Log.d("notottg",title+message)
            buildNotificationChannel()

            if(buildNotificationChannel()){
                generateNotification(title!!,message!!)
            }

        }


    }

这是我的createNotificationChannel函数

 private fun buildNotificationChannel():Boolean {


        /*var audioAttributes = AudioAttributes.Builder().setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
            .setUsage(AudioAttributes.USAGE_ALARM)
            .build()
        sound=Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE+"://"+applicationContext.packageName+"/"+R.raw.alert)
        Log.d("notisound",sound.toString())*/
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
            val CHANNEL_ID =  "merchant_notification"
            val CHANNEL_NAME = "Merchant Notification"
            var notificationChannel = NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH).apply {
                vibrationPattern=longArrayOf(400, 400, 400, 400, 500, 400, 400, 400, 400)
                enableVibration(true)
            }
            notificationManager= getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
            notificationManager.createNotificationChannel(notificationChannel)





            //notificationChannel.setSound(sound,audioAttributes)

        }
        return true

    }

这是我的生成功能

fun generateNotification(title: String, message: String) {

        val intent = Intent(this@CustomMessagingService, MainActActivity::class.java)
        var pendingIntent = PendingIntent.getActivity(this@CustomMessagingService, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)

        var builder: NotificationCompat.Builder =
            NotificationCompat.Builder(this, "merchant_notification")
        var audioAttributes = AudioAttributes.Builder().setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
            .setUsage(AudioAttributes.USAGE_ALARM)
            .build()
        sound=Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE+"://"+applicationContext.packageName+"/"+R.raw.alert)
        Log.d("notisound",sound.toString())

        builder.setAutoCancel(true)
            .setSmallIcon(R.mipmap.ic_launcher_round)
            .setContentTitle(title)
            .setContentText(message)
            .setContentIntent(pendingIntent)
            .setSound(sound)

        notification = builder.build()
        Log.d("notot", notification.toString() + "   " + sound.toString())
        notificationManager.notify(1, notification)



        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
            var nb: Notification.Builder = Notification.Builder(this)
            nb.setSmallIcon(R.mipmap.ic_launcher_round)
                .setAutoCancel(true)
                .setSound(sound, audioAttributes)
                .setContentTitle(title)
                .setContentText(message)
                .setContentIntent(pendingIntent)
                .build()
            notification = nb.notification
            notification.flags = Notification.FLAG_AUTO_CANCEL
            notificationManager.notify(0, notification)
        }


    }

fun generateNotification（标题：String，消息：String）{
val intent=intent(this@CustomMessagingService，MainActActivity:：class.java）
var pendingent=pendingent.getActivity(this@CustomMessagingService，0，意图，挂起内容。标志（更新当前）
变量生成器：NotificationCompat.builder=
通知合作建造商（本“商户通知”）
var audioAttributes=audioAttributes.Builder（）.setContentType（audioAttributes.CONTENT\u TYPE\u SONIFICATION）
.setUsage（AudioAttributes.USAGE\u报警）
.build（）
sound=Uri.parse（ContentResolver.SCHEME\u ANDROID\u RESOURCE+“：//”+applicationContext.packageName+“/”+R.raw.alert）
Log.d（“notisound”，sound.toString（））
builder.setAutoCancel（真）
.setSmallIcon（R.mipmap.ic_launcher_round）
.setContentTitle（标题）
.setContentText（消息）
.setContentIntent（挂起内容）
.setSound（声音）
notification=builder.build（）
Log.d（“notot”，notification.toString（）+“”+sound.toString（））
notificationManager.notify（1，通知）
if（Build.VERSION.SDK\u INT

我的舱单代码

  <service android:name=".classes.CustomMessagingService"
            android:exported="false"
            android:enabled="true">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT"
                    />

            </intent-filter>
        </service>
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_channel_id"
            android:value="merchant_notification" />

这对我很有用：

public class MyFirebaseMessagingService extends FirebaseMessagingService {


    @Override
    public void onMessageReceived(@NonNull RemoteMessage message) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { // channel for notifications

            NotificationManager notificationManager = getSystemService(NotificationManager.class);

            if (notificationManager != null) {
                List<NotificationChannel> channelList = notificationManager.getNotificationChannels();

                for (int i = 0; channelList != null && i < channelList.size(); i++)
                    notificationManager.deleteNotificationChannel(channelList.get(i).getId());
            }

            String name = getString(R.string.notification_channel_name);
            int importance = NotificationManager.IMPORTANCE_HIGH;

            NotificationChannel channel = new NotificationChannel(getString(R.string.notification_channel_id), name, importance);
            
            assert notificationManager != null;
            notificationManager.createNotificationChannel(channel);
        }

        Intent intent;
        intent = new Intent(this, MainActivity.class);
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        stackBuilder.addNextIntentWithParentStack(intent);
        PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);


        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, getString(R.string.notification_channel_id))
                .setSmallIcon(R.drawable.logo)
                .setAutoCancel(true)
                .setPriority(NotificationCompat.PRIORITY_MAX)
                .setDefaults(Notification.DEFAULT_SOUND)
                .setContentTitle(message.getData ().get ("myBody"))
                .setContentIntent(pendingIntent);


        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
        notificationManager.notify(0, builder.build());
    }

    @Override
    public void onNewToken(@NonNull String token) {
    }
}

---

只是想一想——当您已经调用通知生成函数时，可能找不到making cahnnel函数。您可以尝试将它们放在同一个函数中，以确保它们正确发生，一个接一个地完成。还有，发布你的清单我照你说的做了。仍然不是信用渠道。你能发布你的清单吗？上传了清单，包括你给@Avital抱歉，我没有更多的想法。。。我使用Java，因此无法运行您的代码，但在我看来它很好：（我上传了我的

onreceive

，效果很好，也许你可以比较一下你的代码并找出错误。顺便说一句，创建频道只针对

Build.VERSION.SDK\u INT>=Build.VERSION\u CODES.O

，所以这个检查应该在metohd的开始，应该包括整个代码。）

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

        <meta-data
            android:name="com.google.firebase.messaging.default_notification_channel_id"
            android:value="@string/notification_channel_id" />