SharedPreferences in a Fragment

Question

I am trying to implement the SharedPreferences in a fragment. I am trying to display the details of the logged in user. However, I am having trouble displaying it on the account Fragment. No problems when displaying SharedPreferences in the MainActivity. I am looking for a solution as to how to cater the code so it will work in a fragment.

MainActivity.java

if(!SharedPrefManager.getInstance(this).isLoggedIn()){
            finish();
            startActivity(new Intent(this, LoginActivity.class));
        }
        textviewUsername = (TextView)findViewById(R.id.usernameLabel);
        textviewUsername.setText(SharedPrefManager.getInstance(this).getUsername());

In this AccountFragment I am trying to display the account details.

AccountFragment.java

public class AccountFragment extends Fragment {
private TextView textViewUsername, textViewEmail, textViewFirstName, textViewLastName;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
   return inflater.inflate(R.layout.fragment_account, container, false);

    if(!SharedPrefManager.getInstance(getContext()).isLoggedIn()) {
        startActivity(new Intent(getContext(), LoginActivity.class));
    }

        textViewUsername = (TextView) getView().findViewById(R.id.editTextUsername);
        textViewEmail = (TextView) getView().findViewById(R.id.editTextEmail);
        textViewFirstName = (TextView) getView().findViewById(R.id.editTextFirstName);
        textViewLastName = (TextView) getView().findViewById(R.id.editTextLastName);


        textViewUsername.setText(SharedPrefManager.getInstance(getActivity()).getUsername());
        textViewEmail.setText(SharedPrefManager.getInstance(getActivity()).getEmail());
        textViewFirstName.setText(SharedPrefManager.getInstance(getActivity()).getFirstName());
        textViewLastName.setText(SharedPrefManager.getInstance(getActivity()).getLastName());

}

Answer 1

You have an unreachable code in your onCreateView - you are returning View object in first line. You should have something like that:

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
   View view = inflater.inflate(R.layout.fragment_account, container, false);

    if(!SharedPrefManager.getInstance(getContext()).isLoggedIn()) {
        startActivity(new Intent(getContext(), LoginActivity.class));
    }

    textViewUsername = (TextView) view.findViewById(R.id.editTextUsername);
    textViewEmail = (TextView) view.findViewById(R.id.editTextEmail);
    textViewFirstName = (TextView) view.findViewById(R.id.editTextFirstName);
    textViewLastName = (TextView) view.findViewById(R.id.editTextLastName);

    textViewUsername.setText(SharedPrefManager.getInstance(getActivity()).getUsername());
    textViewEmail.setText(SharedPrefManager.getInstance(getActivity()).getEmail());
    textViewFirstName.setText(SharedPrefManager.getInstance(getActivity()).getFirstName());
    textViewLastName.setText(SharedPrefManager.getInstance(getActivity()).getLastName());

    return view;
}