PreferenceManager.java

public class PreferenceManager {
    private static final String PREFERENCES_NAMES = "Prefs";
    private static final String NAME = "nameKey";
    private static final String WALLET = "walletKey";

    private SharedPreferences mPref;

    public PreferenceManager(Context ctx) {
        mPref = ctx.getSharedPreferences(PREFERENCES_NAMES, Context.MODE_PRIVATE);
    }
}