ios - 当应用程序在后台时 didReceiveRemoteNotification 不使用 Firebase 调用

Question

使用 Firebase 我发送这个 JSON:

{
  "data": {
  },
  "priority": "high",
  "to": "xxxxx",
  "content-available": "true",
  "notification": {
    "body": "HI!",
    "title": "FCM Message",
    "badge": 1,
    "sound": "Default"
  }
}

但是 didReceiveRemoteNotification:fetchCompletionHandler 在应用程序处于后台时不会被调用。

我启用后台模式 - 来自功能的远程通知。

有什么建议吗？

Answer 1

您的 content-available 键/值不正确。键是 content_available(下划线，不是破折号)，值是 bool 值，而不是字符串:

{
  "data": {
  },
  "priority": "high",
  "to": "xxxxx",
  "content_available": true,  // <= CHANGED
  "notification": {
    "body": "HI!",
    "title": "FCM Message",
    "badge": 1,
    "sound": "Default"
  }
}

参见 Table 1 of the HTTP Server Protocol document :

On iOS, use this field to represent content-available in the APNs payload. When a notification or message is sent and this is set to true, an inactive client app is awoken. On Android, data messages wake the app by default. On Chrome, currently not supported.