How to maintain data on an android device even if the app is uninstalled?

Question

I want to maintain data on an android device even if my app is uninstalled.
I want to maintain the data (some key) in android device even when the app is uninstalled or removed i want to retain this data when my app is re-installed in the same device.

Answer 1

A similar question passed by on Google Groups quite a while ago and as far as I understood, there's not a single method that will fully prevent a user from deleting the data stored. If you think about it, it actually wouldn't make sense to provide a way to fill up a device's (internal) storage without the user being able to free up that space again.

That being said, your options for storing semi-persistant data that does not get wiped out when an app is being uninstalled seem to be limited to either the SD card, some web-based location or a seperate content provider - each with its own limitations.

You might also want to read through Google's documentation on this.

Answer 2

您可以将其保存到文件夹中，如果重新安装了应用程序，请从那里加载它。