6 Answers

• Disclaimer: this is a hack.

  I haven't tried this with Andriod but this worked with iPhone. There is definitely a way to do this with the iPhone SDK http://forums.macrumors.com/showthread.php?t=615581. Since it doesn't seem like this feature is exposed though, I'm just adding a transparent image over the tab bar until the user logs in, then I call the disableNonSettingsTabs function on the tabGroup object to remove the image.

  var disableTabsImage = Titanium.UI.createView({
      backgroundImage:'transparent.png',
      height:50,
      width:'100%',
      bottom:0,
      left:0
  });
  tabGroup.add(disableTabsImage);
  
  tabGroup.enableNonSettingsTabs = function(){
      this.remove(disableTabsImage);
  };
  
  tabGroup.disableNonSettingsTabs = function(){
      tabGroup.setActiveTab(settingsTab);
      this.add(disableTabsImage);
  };
  
  var loginAlert = Titanium.UI.createAlertDialog({
      title:'Please login',
      message:'Please login first.'
  });
  
  disableTabsImage.addEventListener('click', function(e){
      loginAlert.show();
  });
  

• Have you found the answer? or does anyone? Having the same question here!

• bump. Same problem as well.

• I have the same problem too…

• Prevent Tab Switching on Condition

  One way to prevent tab changing is to set the active tab to the tab you were just on when a condition is met. As you can see, it's not very clean:

  var change = true;
  tabGroup.addEventListener('blur',function(e){
      if (lockTabs && change) {
          if (e.previousIndex!=e.index) {
              tabGroup.setActiveTab(e.previousIndex);
              change = false;
          }
      } else if (change===false) {
          change = true;
      }
  });
  

  Explanation: Essentially what it does is switch the tab on the blur event only when:

  • the given condition is met, in this case the lockTabs variable (line 3)
  • the event isn't being fired because we are changing the tab (line 3)
  • the tab clicked is not the tab we were just at (line 4)

  It's kind of confusing, but if you take out the change variable you'll notice that it switches from the active tab to the previous tab in an infinite loop. You have to let the blur event at least fire once freely.

• I was googling for lock or disable tab, and found this thread.

  I ended up going with:

  tab1.touchEnabled =false

  or you can also lock the whole tabgroup which is what I wanted awaiting xhr callback

  tabGroup.touchEnabled = false

  My first post! enjoy..