Google Cloud Messaging Notification与数据
[英]Google Cloud Messaging Notification vs Data
问题描述
I was reading the GCM documentation about the difference between notification type and data type when you want to send a message to a mobile device. 
当您要向移动设备发送消息时，我正在阅读有关通知类型和数据类型之间差异的GCM文档。
They say that notification type is always collapsed but for me its not clear what it means exactly? 他们说通知类型总是折叠的，但对我来说不清楚它到底意味着什么？
Does it mean that if i send two or more notification (before the user is able to open the previous one) only the last one will be visible? 这是否意味着如果我发送两个或多个通知（在用户能够打开前一个通知之前），则只有最后一个可见？
1 个解决方案
解决方案1
2 2016-06-09 10:30:20
Collapsible or Non-Collapsible
The push messages can be either collapsible or non-collapsible. 推送消息可以是可折叠的或不可折叠的。 “Collapsible” means that the most recent message overwrites any previous ones queued for sending. “可折叠”表示最新消息将覆盖排队发送的所有先前消息。 A typical example of collapsible messaging is a live game score. 可折叠消息传递的典型示例是实时游戏得分。 In case previous score updates haven't reached their destination yet, the Android clients would only get the latest one. 如果以前的分数更新尚未到达目的地，则Android客户端只会获取最新的分数。 This happens however on a best effort basis: the order in which messages get sent in GCM is not guaranteed, so in some cases the “latest” message may not be actually the most recent one. 但是，这是尽力而为的：无法保证在GCM中发送消息的顺序，因此在某些情况下，“最新”消息实际上可能不是最新消息。
Notification: Set notification payload. 通知：设置通知有效载荷。 May have optional data payload. 可能具有可选的数据有效负载。 Always collapsible. 始终可折叠。
Data: Set data payload only. 数据：仅设置数据有效载荷。 Can be either collapsible or non-collapsible. 可以是可折叠的或不可折叠的。
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