android上的SharedPreferences

Question

I have a problem with SharedPreferences and my PreferenceActivity . I need that my application can difference between differentes preferences and users, so every user has his own preferences. I thought in use SharedPreferences sending to it the user ID to get the correct options. The problem is that I dont know how to do for my PreferenceActivity use that specific options. Currently, It is using the context options, so when I restart my application, it loads the last options modifieds...

How can I configure my preferenceActivities to store his changes in the sharedpreferences that I want? And for the load?

Thanks!

Answer 1

It's unusual to support the concept of 'users' on Android - most apps assume a phone has a single user.

That said, you can create custom SharedPreferences like this

SharedPreferences userprefs = getSharedPreferences(username,MODE_WORLD_READABLE);

For your PreferenceActivity, in onCreate you do this

getPreferenceManager().setSharedPreferencesName(username);

Hope that helps...

Answer 2

这可能有点晚了，但您也可以查看Swarm的云数据 ，它提供存储在云中的每用户SharedPreferences系统（因此，如果用户切换设备，他们的首选项将保留在新设备上）。