Firebase 云消息推送通知不适用于 Android Kitkat

Question

我正在尝试使用 FCM [firebase 云消息传递]

向我的应用添加推送通知功能

通知将出现在我的 摩托罗拉 Moto G6 - Android 9 上。但是，通知不会出现在我的 Samsung galaxy grand Max - Android 4.4.4

上

这是我的代码：

主要活动：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel("MyNotifications", "MyNotifications", NotificationManager.IMPORTANCE_DEFAULT);

            NotificationManager manager = getSystemService(NotificationManager.class);
            manager.createNotificationChannel(channel);
        }

MyMessagingService.class:

package com......

import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationManagerCompat;

import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;
import com.innocentapps.musicplayer2.R;

public class MyMessagingService extends FirebaseMessagingService {

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);

        showNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody());

    }

    public void showNotification(String title, String message) {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "MyNotifications")
                .setContentTitle(title)
                .setSmallIcon(R.drawable.ic_tap_and_play)
                .setAutoCancel(true)
                .setContentText(message);

        NotificationManagerCompat managerCompat = NotificationManagerCompat.from(this);
        managerCompat.notify(999, builder.build());
    }

} 

Answer 1

您好，问题已解决，实际上它正在运行，但 phone 将其作为 垃圾 通知删除。