如何在android中自定义通知

Question

我刚刚使用主题消息传递实现了 firebase 云消息传递 pushNotification。收到通知，但 MyFirebaseMessagingService 未正常工作。它传递消息的方式与云消息传递相同。完成云消息功能。创建一个名为 MyFirebaseMessagingService 的服务并使用 FirebaseMessagingService 进行扩展。将服务添加到清单。这是我的 FirebaseMessagingService 类。@Overridepublic void onDeletedMessages() {    super.onDeletedMessages();}@Overridepublic 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" />

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，我订阅了常规主题，并且只会收到关于该主题发送的消息，如下所示。

希望这有帮助......对我有用！