I had searched for this but could not get the solution.
I had created 3 tabs (using buttons) in an activity. Whenever I click a button the corresponding activity should display below the tabs. I know this can be achieved with Tab Host, but I don’t want to use it. If I declare a Frame Layout below the tabs, how can I set the content of Frame Layout to my desired Activity? And I am developing in Android 2.2.
Please provide me a solution for this.
UPDATE : I want to have custom tabs something like this in TabHost.

You cannot have this functionality without TabHost or another Tab container.
If you want to have this kind of functionality, a solution could be to have 3 activities with the same top “tabs” and start the respective activity each time, adjusting properly the selected “tab” and handling the activity lifecycle.
Hope this helps!