Modify tab indicator dynamically in Android

Question

My application needs to update tab indicator dynamically, I'm trying to do this by invoke TabSpec.setIndicator(), but it doesn't work. Here is my code:

In onCreate method of TabActivity:

tabHost = getTabHost(); 
TabSpec tabSpec = tabHost.newTabSpec("abc");
tabSpec.setIndicator("helloabc");
tabSpec.setContent(new MyViewFactory());
tabHost.addTab(tabSpec);

Now I need to change tab indicator to another string, for example, "xyz"

TabSpec tabSpec = MyTabActivity.getTabSpec();
tabSpec.setIndicator("xyz");

But it doesn't work. So I'd like to know how to change tab indicator after it is added to the tabhost? Many thanks.

Solution

Thanks to @CommonsWare, I make it by using TabWidget.getChildAt, here is my code for your convenience:

TextView title = (TextView) tabHost.getTabWidget().getChildAt(tabId).findViewById(android.R.id.title)
title.setText("xyz");

Goren

can i change the image indicator this way? – Taxiway

Answer 1

I apologize for my earlier incorrect answer, now deleted.

Try using getChildViewAt() on TabWidget.

Trogon

How can i change the image indicator of tab bar? – Taxiway

Answer 2

i managaed with getChildTabViewAt(tabId) instead of childviewAt(id) for multiple tab.

Forcible

Answer 3

Try this:

 TextView title = (TextView) TabHost.getTabWidget().getChildTabViewAt(tabId).findViewById(android.R.id.title);

Ferdinande