所以这是我第一次要发送的更新我的应用程序，我不知道什么actully发生在一个应用程序通过谷歌播放更新，

So this is the first time I am going to send an update for my app and I don't know about what actully happens when an app is updated via google-play,

这里有一些问题，那些我无法得到的答案是：

Here are some questions those I couldn't get answer of :

什么是真正更新，这个过程是如何工作的，即方法或回调时更新完成？

What is actually updated and how this process works i.e. methods or callbacks when update is done ?

发生了shared- preferences文件是什么，的名称值对更改/复位

What happens to the shared-preferences file, the name values pairs change/reset ?

比方说，我想从一台服务器，当应用程序通过谷歌更新播放下载一些文件，并做一些数据库操作在后台的文件。我怎样才能接近这个以正确的方式。

Let's say I want to download some file from a server , when the app is updated via google play and do some db operations with that file in the background. How can I approach this in the right way.

- 编辑 -

为了使它更清楚我想自动做一些处理，当应用程序被用户更新，他不刻意去打开应用程序，并实现这一点，我在找一个触发器是任何意图[隐性或显性]谷歌提供发挥我的应用​​程序。的

To make it more clear I want to automatically do some processing when the app is updated by user and he doesn't bother to open the app and to achieve this I am looking for a trigger that is provided by google play to my app by any intent [implicit or explicit].

推荐答案

您需要实现广播接收器，获取通知的时候Paackage是beeing更换： 在你的清单包括：

You need to implement a Broadcast Receiver that gets notified when the Paackage is beeing replaced: In your Manifest include:

<receiver android:name="my.package.MyReceiver">
  <intent-filter>
  <action android:name="android.intent.action.PACKAGE_REPLACED"/>
    <data android:scheme="package" /> 
  </intent-filter>
</receiver>

类 MyReceiver 需要扩展 android.content.BroadcastReceiver 要回答你的第二个问题：该共享preferences不受通过谷歌更新播放，因为是不是在你的应用程序的数据文件夹中的文件

The class MyReceiver needs to extend android.content.BroadcastReceiver To Answer your second question: The SharedPreferences aren't affected by an update through Google Play, as aren't the files in your App's data-Folder.