问题描述
我使用的是 BackupManager 备份共享preferences 到云中。现在，这个工作当我使用它在单个设备上，只进行重新安装不完全卸载预期。要做到这一点，我清理这湿巾preFS数据和比月食重新安装应用程序。如果我先卸载应用程序，并重新安装它后恢复通话报告没有数据恢复。当我在其他设备上安装应用程序同样的情况。
I am using the BackupManager to backup SharedPreferences to the cloud. Now this works as expected when I use it on a single device and only perform a reinstall not a full uninstall. To do that I am clearing data which wipes prefs and than reinstalling the app from eclipse. If I first uninstall the app and after reinstall it the restore call reports no data to restore. The same happens when I install the app on another device.
从我的理解我希望将数据恢复到任何设备，无论应用程序被重新安装或者是一个新的安装。让我知道是否张贴code会帮助，但我想通了，因为它是工作，我可能只是误会了服务应该用于和它是如何工作。我想备份用户的设置，可能他们进入搜索字段的一些信息。我想这个数据跟随用户到一个新的设备，或者如果用户卸载应用程序，并在以后重新安装。请让我知道，如果 BackupManager 不是实现这一目标的正确工具。
From my understanding I would expect the data to be restored to any device regardless of the app being reinstalled or being a fresh install. Let me know if posting code will help but I figured that because it is working I might just have misunderstood what the service should be used for and how it works. I am trying to backup a users settings and possibly some information they enter into search fields. I would like this data to follow the user to a new device or if the user uninstalls the app and reinstalls at a later date. Please let me know if BackupManager is not the correct tool to accomplish this.
推荐答案
当我从Android的代言人的话，知道了：
As I know from the words of Android Advocate:
一般似乎 BackupManager 只为后盾可靠
了以后要当应用程序在同一设备上恢复数据的应用程序
从Play商店重新安装。
如果你想要做跨多个设备的同步备份，那么你可以尝试使用，不是 BackupManager ，并且有从的谷歌I / O 2012。
If you want to do backup syncing across multiple devices then you can try to use Google Drive API, not BackupManager, and that there is very useful session from Google I/O 2012 on the subject.
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