Android 9 Development Cookbook(Third Edition)
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Using more than one preference file

Using getSharedPreferences() is no different from using its counterpart, but it allows for more than one preference file. It takes the following form:

getSharedPreferences(String name, int mode) 

Here, name is the file. The mode can be either MODE_PRIVATE, MODE_WORLD_READABLE, or MODE_WORLD_WRITABLE and describes the file's access levels.