Firebase`first_open`事件--->`previous_first_open_count`参数逻辑 [英] Firebase `first_open` event ---> `previous_first_open_count` param logic
问题描述
Firebase Analytics first_open 事件发送一个参数 previous_first_open_count .
Firebase Analytics first_open event sends a parameter previous_first_open_count.
- 从值"0"开始(在生命周期内首次安装/新用户). 以及随后以1、2、3等递增"1".每次删除时，请重新安装该应用程序.
- it starts with value "0" (on lifetime first install / new user).
- and subsequently 1,2,3 .. etc. increments by "1" each time I remove, re-install the app.
有人可以分享SDK如何管理信息，以保持用户过去安装该应用的频率(基本上触发了 first_open ).AFAIK，一旦删除了该应用，所有的应用数据都将被保存.删除..甚至每次删除时都会重新生成 app_instance_id ，请重新安装该应用...
Can someone share how the SDK manages to persist the information how often user installed the app (basically triggered first_open) in the past.. AFAIK, once the app is removed, all the app data is deleted.. even the app_instance_id is regenerated each time I remove, re-install the app...
很高兴了解Android和iOS
will appreciate to know for both Android and iOS
推荐答案
实际上找不到有关event_param的任何文档:previous_first_open_count..
Actually cannot find any documentation about event_param: previous_first_open_count..
当previous_first_open_count = 0时，是否仅意味着用户安装了应用程序?还是意味着该用户是首次安装并打开应用程序?
When previous_first_open_count = 0, does it means that user installed application only? Or does it mean, that user have installed and opened app for the first time?
As per the definition ’first_open’ (https://support.google.com/firebase/answer/9234069?hl=en&visit_id=637466094047451258-3073953155&rd=1):
用户在安装或重新安装应用程序后首次启动应用程序
the first time a user launches an app after installing or re-installing it
此事件不是在用户将应用程序下载到设备上时触发的，而是在用户首次使用时触发的.要查看原始下载数量，请在Google Play开发者控制台或iTunesConnect中查看.
This event is not triggered when a user downloads the app onto a device, but instead when he or she first uses it. To see raw download numbers, look in Google Play Developer Console or in iTunesConnect.
支持为接受Apple的iOS 14应用程序跟踪提示的用户评估first_open转换.
Supports measuring first_open conversions for users who accept Apple's iOS 14 app-tracking prompt.
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