Question

Currently my code loads a TabWidget with 4 tabs. The first tab points to a disclaimer page which also takes in a username from a edittext box and stores it internally on the phone. I would like to have an if condition which checks to see if the username is stored on the phone and if it is then show the user a different “thank-you” page than the original disclaimer page. I believe my code isn’t working because it’s under the onCreate function and isn’t refreshing…

    public class TabWidgetActivity extends TabActivity {

    /** Called when the activity is first created. */

    @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Resources res = getResources(); // Resource object to get Drawables
    TabHost tabHost = getTabHost();  // The activity TabHost
    TabHost.TabSpec spec;  // Reusable TabSpec for each tab
    Intent intent;  // Reusable Intent for each tab


    // Create an Intent to launch an Activity for the tab (to be reused)

    String username = null;  
    String pulledUsername = getPreferences(MODE_PRIVATE).getString("username",username);

    // ******* MAIN PART I'M HAVING TROUBLE WITH ********************************

    if (pulledUsername != null){
    intent = new Intent().setClass(this, HomeActivity.class);
    }
    else {
    intent = new Intent().setClass(this, DisclaimerActivity.class);
    }

    // ^^^^^^^^^^^^^^^ MAIN PART I'M HAVING TROUBLE WITH ^^^^^^^^^^^^^^^^^^^^^^

    // Initialize a TabSpec for each tab and add it to the TabHost

    spec = tabHost.newTabSpec("home").setIndicator("Home",
                      res.getDrawable(R.drawable.ic_tab_home))
                  .setContent(intent);
    tabHost.addTab(spec);

    // Do the same for the other tabs

    intent = new Intent().setClass(this, ShowMapActivity.class);
    spec = tabHost.newTabSpec("map").setIndicator("Map",
                      res.getDrawable(R.drawable.ic_tab_map))
                  .setContent(intent);
    tabHost.addTab(spec);

    intent = new Intent().setClass(this, SurveyActivity.class);
    spec = tabHost.newTabSpec("survey").setIndicator("Survey",
                      res.getDrawable(R.drawable.ic_tab_web))
                  .setContent(intent);
    tabHost.addTab(spec);

    intent = new Intent().setClass(this, AnalysisActivity.class);
    spec = tabHost.newTabSpec("analysis").setIndicator("Analysis",
                      res.getDrawable(R.drawable.ic_tab_analysis))
                  .setContent(intent);
    tabHost.addTab(spec);

    tabHost.setCurrentTab(2);
     }
    }

Answer 1

Can you be a bit more clear about what “isn’t working”?

Are you setting the username in the preferences within this Activity? If not then you should be using getSharedPreferences() as preferences are stored on a per activity basis.

when writing the username in the Disclaimer Activity

  SharedPreferences settings = getSharedPreferences("com.blah.application", MODE_PRIVATE);
  SharedPreferences.Editor editor = settings.edit();
  editor.putString("username", username); 
  // Commit the edit!
  editor.apply();

When pulling the username in the other activity:

pulledUsername = getSharedPreferences("com.blah.application", MODE_PRIVATE).getString("username",null)