Sharedpreferences - Firebase android

Question

I am logging in normally but quado close application, back to login screen. I’m trying to run sharedPreferences but I’m not successful.

public static final String PREF_NAME = "LoginActivityPreferences";
private SharedPreferences mPreferences;

// Metodo onCreate
FirebaseApp.initializeApp(LoginActivity.this);
mAuth = FirebaseAuth.getInstance();

// Metodo shared
private void sharedPreferences(String email, String password) {


    FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();

        mPreferences = getSharedPreferences(PREF_NAME, MODE_PRIVATE);

            if (user != null) {
                startActivity(new Intent(getApplicationContext(), DashboardActivity.class));

            } else {
                SharedPreferences.Editor editor = mPreferences.edit();
                editor.putString("email", email);
                editor.putString("password", password);
                editor.commit();
                startActivity(new Intent(getApplicationContext(), LoginActivity.class));
            }
}

 // Metodo de login email e senha
 private void singInEmailSenha(final String email, final String password) {
    mAuth.signInWithEmailAndPassword(email, password)
            .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if (task.isSuccessful()) {
                        sharedPreferences(email, password);
                    } else {

                    }
                }
            });
}

Answer 1

Do you have any field "Keep me logged in"?

If the answer is YES, do one more:

editor.putBoolean("permanecer", false);

And then in the onCreate of your Login screen, you check if this value ta as true, if you already enter the main screen, otherwise you Fican the login screen

Answer 2

You have to save the received value when you enter the condition if the user exists. See:

mPreferences = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
if (user != null) {

    SharedPreferences.Editor editor = mPreferences.edit();
    editor.putString("email", email);
    editor.putString("password", password);
    editor.commit();

    startActivity(new Intent(getApplicationContext(), DashboardActivity.class));

} else {

    startActivity(new Intent(getApplicationContext(), LoginActivity.class));
}