firebase设置后台消息处理程序

时间:2018-06-08 07:53:22

标签: firebase google-cloud-messaging firebase-cloud-messaging service-worker

我一直在尝试在前端自定义通知消息,即如果未在通知中设置字段发送,我正在尝试添加它。

importScripts('https://www.gstatic.com/firebasejs/5.0.4/firebase-app.js');
importScripts('https://www.gstatic.com/firebasejs/5.0.4/firebase-messaging.js');

var config = {
    apiKey: "x",
    authDomain: "y",
    databaseURL: "z",
    projectId: "a",
    storageBucket: "b",
    messagingSenderId: "1"
};

firebase.initializeApp(config);

const messaging = firebase.messaging();
console.log('came here');

console.log(messaging.bgMessageHandler);

console.log(messaging.setBackgroundMessageHandler,'dsafdsadasfd')




messaging.setBackgroundMessageHandler(function(payload) {
  console.log('[firebase-messaging-sw.js] Received background message ', payload);
  // Customize notification here
  var notificationTitle = 'Background Message Title';
  var notificationOptions = {
    body: 'Background Message body.',
    icon: '/firebase-logo.png'
  };

  console.log(notificationOptions)
  return self.registration.showNotification(notificationTitle,
    notificationOptions);
});

console.log(messaging.bgMessageHandler);

在执行上面的代码时,即使我收到通知,我也没有得到[firebase-messaging-sw.js] Received background message ', payload的控制台。

为什么setBackgroundMessageHandler无效?

1 个答案:

答案 0 :(得分:2)

当应用程序在后台运行时,您在json请求中看起来像是发送消息的问题。

注意:如果在HTTP或XMPP发送请求中设置通知字段,则这些值优先于服务工作者中指定的任何值。

https://firebase.google.com/docs/cloud-messaging/js/topic-messaging

因此,以下格式不会调用后台处理程序:



{
  to: "e-DLMv........._DiL",
  notification: {
    body: "Backgound-Message"
  }
}




在数据中发送包含通知的消息(它将起作用):



{
  to: "e-DLMv........._DiL",
  data: {
    notification: {
      body: "Backgound-Message"
    }
  }
}