Example.java

.
.
.
  LocalSharedPreferences localSharedPreferences = new LocalSharedPreferences(this.context);
  localSharedPreferences.setFirstName(owner.getFirstName());
  localSharedPreferences.setLastName(owner.getLastName());
  localSharedPreferences.setEmail(owner.getEmail());
.
.
.
  

LocalSharedPreferences.java

public class LocalSharedPreferences implements SharedPreferences.OnSharedPreferenceChangeListener  {

  private final static String TAG = LocalSharedPreferences.class.getSimpleName();
  private final String EMAIL = "email";
  private final String FIRST_NAME = "first_name";
  private final String LAST_NAME = "last_name";
  
  public LocalSharedPreferences(Context context) {
      this.context = context;

      this.sharedPreferences = this.context.getSharedPreferences( this.context.getResources().getString(R.string.app_name) , Context.MODE_PRIVATE );
      this.sharedPreferences.registerOnSharedPreferenceChangeListener(this);
  }
  
  public String getEmail() {
        return this.sharedPreferences.getString(EMAIL, email);
  }

  public void setEmail(String email) {
      this.sharedPreferences.edit().putString(EMAIL, email).commit();
  }

  public String getFirstName() {
      return this.sharedPreferences.getString(FIRST_NAME, first_name);
  }

  public void setFirstName(String firstName) {
      this.sharedPreferences.edit().putString(FIRST_NAME, firstName).commit();
  }

  public String getLastName() {
      return this.sharedPreferences.getString(LAST_NAME, last_name);
  }

  public void setLastName(String lastName) {
      this.sharedPreferences.edit().putString(LAST_NAME, lastName).commit();

  }
  
 
  // SharePreference interface implementation
  @Override
  public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
      Log.e(TAG, "key: "+key );
  }

  public void showAllValues(){
      Map<String, ?> allEntries = this.sharedPreferences.getAll();
      Log.e(TAG, "allEntries: "+allEntries);
  }

  public static void deleteAllUserPreferences(Context context){
      context.getSharedPreferences(context.getResources().getString(R.string.app_name),Context.MODE_PRIVATE)
              .edit().clear().commit();
  }
  
}