Android check user logged in before, else start login activity

Question

I want the login activity to start when the user starts the app but has not logged in before. If a successful login has been completed before, the app will skip the login page and move to MainMenu.java. What I have now is:

    public class Login extends Activity implements OnClickListener, TaskCompleteCallback{       first_time_check();  ... @Override protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentView(R.layout.configure);      ...}  private boolean first_time_check() {         String first = mPreferences.getString("first", null);         if((first == null)){             Intent i = new Intent(Login.this, MainMenu.class);              startActivity(i);         }         return false;     }  ...         SharedPreferences.Editor editor = mPreferences.edit();         editor.putString("first", value);     ...          editor.commit();                  // Close the activity         Intent i = new Intent(Login.this, MainMenu.class);          startActivity(i);     }            

But I get FCs'. Is something wrong with how I implemented SharedPreferences?

Answer 1

Your code just never calls that first_time_check(), thus the automatic forward in case of a returning user does not work.

You could in onCreate() do

protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);      first_time_check();      setContentView(R.layout.configure);      ...} 

So for a new user, first_time_check() would forward him to the login page, otherwise the current layout would be shown and he could continue on this page.