firebase profile_main

public class ProfileActivity extends AppCompatActivity {

    private FirebaseAuth mAuth;
    private FirebaseUser user;
    private TextView Email;
    private TextView Uid;
    private Button logout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_profile);
        Email = (TextView)findViewById(R.id.profileEmail);
        Uid = (TextView)findViewById(R.id.profileUid);
        mAuth = FirebaseAuth.getInstance();
        logout = (Button)findViewById(R.id.button_logout);
        user = mAuth.getCurrentUser();

        if (user != null){
            String email = user.getEmail();
            String uid = user.getUid();
            Email.setText(email);
            Uid.setText(uid);
        }
    }
}