开发Firebase离线日志系统：Android关通知能否收静默推送？

Great question! The short answer is: No, Android does NOT behave the same as iOS here—disabling app notification permissions will prevent most "silent" Firebase messages from being received, especially when your app is in the background or killed.

Let’s break down the key differences between the two platforms:

iOS Behavior (What You Already Know) #

iOS’s silent push mechanism (triggered by setting content-available: 1 in your APNs payload) operates independently of the user’s notification permissions. Since these pushes don’t generate a visible notification in the Notification Center, the system treats them as a way to wake your app for background tasks (like syncing data or logging events) — even if the user has turned off all notifications for your app. This is why your offline event log system works reliably there.

Android Behavior #

On Android, Firebase Cloud Messaging (FCM) has two main message types, and their handling is tightly tied to notification permissions and app state:

• Notification Messages: These are handled directly by the Android system and show up in the Notification Center. Unsurprisingly, if the user disables notification permissions, these are completely blocked.
• Data Messages: These are meant to be processed by your app directly (via onMessageReceived). While they don’t show a visible notification by default, their delivery depends heavily on the app’s state and system restrictions:
  • When your app is in the foreground: Data messages will still be delivered to onMessageReceived even if notification permissions are disabled.
  • When your app is in the background or killed: The Android system will automatically wrap data messages into a system notification (unless you set priority: high and meet specific conditions). If notification permissions are disabled, this wrapped notification gets blocked, and your app never receives the message.

Even if you use high-priority data messages to try to bypass this, many Android device manufacturers (like Xiaomi, Huawei, Oppo) have aggressive background optimization policies that can block these messages anyway — especially if the user has disabled notification permissions (since this signals they don’t want the app to "disturb" them in any way).

Workaround for Android? #

If you need reliable offline event logging on Android even when notifications are disabled, you’ll likely need to combine FCM with other mechanisms:

• Use WorkManager for scheduled background syncs (to catch up on missed events when the app is next active).
• Request the ACCESS_BACKGROUND_LOCATION permission (if applicable to your use case) to keep the app’s background processes alive, but this is not ideal and can hurt battery life.
• Educate users to keep notification permissions enabled for your app, explaining that it’s required for reliable offline event logging (without spamming them with visible notifications).

内容的提问来源于stack exchange，提问作者kPieczonka