Question

I am pretty new to Android dev. I am browsing through the API here http://developer.android.com/reference/android/content/SharedPreferences.html

but I am confused about how to actually get the file contents and read or write from them.

I have this code to get the SharedPreferences object:

SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences( MyClassName.this);

but in this case, I get the reference to sharedPreferences, but not a connection to my file which stores the preferences data.

Maybe I am not understanding the API correctly, but how am I supposed to get the reference to the file and read/write to it?

Thanks!

Answer 1

If you want to get values from your SharedPreferneces you have to use (this example works with Strings, but you can also call getBoolean, getInt, etc..)

prefs.getString("myString", "defaultValue"); // "defaultValue" will be returned in case "myString" wasn't saved on the SharedPreferences

to store some values you can do it like this:

prefs.edit()
.putString("myString", "newValue")
.putBoolean("working", true)
.commit();

As you can see you can edit more than one value at once..