model = new ViewModelProvider(this).get(CurrencySelectorModel.class);
if (onCurrencySelectedListener != null)
model.setOnCurrencySelectedListener(onCurrencySelectedListener);
model = new ViewModelProvider(this).get(CurrencySelectorModel.class);
if (onCurrencySelectedListener != null)
model.setOnCurrencySelectedListener(onCurrencySelectedListener);