java - 如何在android中自定义通知

Question

我刚刚使用主题消息实现了 Firebase 云消息推送通知。收到通知，但 MyFirebaseMessagingService 无法正常工作。它与从云消息传递一样传递消息。

完成云消息功能。创建一个服务名称 MyFirebaseMessagingService 并使用 FirebaseMessagingService 进行扩展。将服务添加到清单。

这是我的 FirebaseMessagingService 类。

@Override
public void onDeletedMessages() {
    super.onDeletedMessages();
}

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

    String messageTitle = remoteMessage.getNotification().getTitle();
    String clickAction = remoteMessage.getNotification().getClickAction();
    Uri soundUri = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://"+ getApplicationContext().getPackageName() + "/" + R.raw.hollow);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(this, getString(R.string.default_notification_channel_id))
            .setSmallIcon(R.mipmap.ic_launcher_round)
            .setContentTitle("New Notification")
            .setSound(soundUri)
            .setContentText(messageTitle);

    Intent resultIntent = new Intent(clickAction);

    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    builder.setContentIntent(pendingIntent);
    builder.setPriority(Notification.PRIORITY_HIGH);
    if (Build.VERSION.SDK_INT >= 21) builder.setVibrate(new long[0]);

    int mNotificationId = (int) System.currentTimeMillis();

    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

    notificationManager.notify(mNotificationId, builder.build());

}

我的清单文件：-

<service
            android:name=".MyFirebaseMessagingService"
            android:exported="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="@string/default_notification_channel_id" />

标签： javaandroidfirebasepush-notificationgoogle-cloud-firestore

Answer 1

在发送云消息时，您还必须订阅要接收通知的主题，例如。

FirebaseMessaging.getInstance().subscribeToTopic("general")
                .addOnCompleteListener(task -> {
                    if (task.isSuccessful())
                        Toast.makeText(this, "Subs-Successful", Toast.LENGTH_SHORT).show();
                    else
                        Toast.makeText(this, "Subs NOT Successful", Toast.LENGTH_SHORT).show();
                });

在此，我订阅了一般主题，并且只会收到有关此主题的消息，例如此主题。

希望这有帮助....为我工作！