How to delete shared preferences data from App in Android

Question

How do I delete SharedPreferences data for my application?

I\'m creating an application that uses a lot of web services to sync data. For testing purposes, I need to

Answer 1

new File(context.getFilesDir(), fileName).delete();

I can delete file in shared preferences with it

Answer 2

My solution:

SharedPreferences preferences = getSharedPreferences("Mypref", 0);
preferences.edit().remove("text").commit();

Answer 3

None of the answers work for me since I have many shared preferences keys.

Let's say you are running an Android Test instead of a unit test.

It is working for me loop and delete through all the shared_prefs files.

@BeforeClass will run before all the tests and ActivityTestRule

@BeforeClass
public static void setUp() {
    Context context = InstrumentationRegistry.getTargetContext();

    File root = context.getFilesDir().getParentFile();
    String[] sharedPreferencesFileNames = new File(root, "shared_prefs").list();
    for (String fileName : sharedPreferencesFileNames) {
        context.getSharedPreferences(fileName.replace(".xml", ""), Context.MODE_PRIVATE).edit().clear().commit();
    }
}

Answer 4

Seems that all solution is not completely working or out-dead

to clear all SharedPreferences in an Activity

PreferenceManager.getDefaultSharedPreferences(getBaseContext()).edit().clear().apply();

Call this from the Main Activity after onCreate

note* i used .apply() instead of .commit(), you are free to choose commit();

Answer 5

To remove the key-value pairs from preference, you can easily do the following

getActivity().getSharedPreference().edit().remove("key").apply();

I have also developed a library for easy manipulation of shared preferences. You may find the following link

https://github.com/farruhha/SimplePrefs

Answer 6

As of API 24 (Nougat) you can just do:

context.deleteSharedPreferences("YOUR_PREFS");

However, there is no backward compatibility, so if you're supporting anything less than 24, stick with:

context.getSharedPreferences("YOUR_PREFS", Context.MODE_PRIVATE).edit().clear().apply();