如果应用位于前台，则通知抽屉中不会显示通知

Question

我正在使用Firebase云消息向我的应用发送通知，并且运行正常。但是，当我发送通知时，如果我的应用位于前台，则通知不会显示在通知托盘中。仅当我的应用在后台运行时，通知才会显示在通知托盘中。

下面是我的代码：

public class Notifications extends FirebaseMessagingService {
@ServerTimestamp
Date time;
private FirebaseFirestore mFirestore;
private boolean isNotificationMatching = false;
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
mFirestore = FirebaseFirestore.getInstance();
if (remoteMessage.getData() != null) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
sendNotificationAPI26(remoteMessage);
else
sendNotification(remoteMessage);
}
}
private void sendNotification(RemoteMessage remoteMessage) {
isNotificationMatching = false;
Intent intent = new Intent(this, Dashboard.class);
intent.putExtra("notificationFragment", "showNotifications");
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);

final Map<String, String> data = remoteMessage.getData();
String title = data.get("title");
mFirestore.collection("notifications").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
if (document.getData().get("id").equals(id)) {
isNotificationMatching = true;
break;
}
}
if (!isNotificationMatching) {
postDataToFirebaseServer(data);
}
} else {
Log.d(TAG, "Error getting documents: ", task.getException());
}
}
});

Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.app_logo)
.setContentText(description)
.setAutoCancel(true)
.setSound(defaultSoundUri);
builder.setContentIntent(pendingIntent);
NotificationManager noti = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
noti.notify(new Random().nextInt(), builder.build());
}
private void postDataToFirebaseServer(Map<String, String> data) {
Map<String, Object> postDataMap = new HashMap<>();
postDataMap.put("title", data.get("title"));
postDataMap.put("timestamp", FieldValue.serverTimestamp());

mFirestore.collection("notifications").add(postDataMap).addOnSuccessListener(new OnSuccessListener<DocumentReference>() {
@Override
public void onSuccess(DocumentReference documentReference) {
//                Toast.makeText(getA.this, "Success", Toast.LENGTH_SHORT);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
String error = e.getMessage();
//                Toast.makeText(Testing.this, "Failed", Toast.LENGTH_SHORT);
}
});
}
private void sendNotificationAPI26(RemoteMessage remoteMessage) {
Intent intent = new Intent(this, Dashboard.class);
intent.putExtra("notificationFragment", "showNotifications");
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
final Map<String, String> data = remoteMessage.getData();
String title = data.get("title");
mFirestore.collection("notifications").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
if (document.getData().get("id").equals(id)) {
isNotificationMatching = true;
break;
}
}
if (!isNotificationMatching) {
postDataToFirebaseServer(data);
}
} else {
Log.d(TAG, "Error getting documents: ", task.getException());
}
}
});
NotificationHelper helper;
Notification.Builder builder;
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
helper = new NotificationHelper(this);
builder = helper.getLootBoxNotification(title, defaultSoundUri);
helper.getManager().notify(new Random().nextInt(), builder.build());
builder.setContentIntent(pendingIntent);
}
}

Answer 1

这是你的代码

NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.app_logo)
.setContentText(description)
.setAutoCancel(true)
.setSound(defaultSoundUri);
builder.setContentIntent(pendingIntent);

在这里你设置的是

setAutoCancel(true);

此方法将在应用处于前台时取消所有通知。 将其设置为 false。