[tabbar] how to set first tab to active for multiview

I have bottombar with tabbar for multiview.
Tabbar has three options and selected option is first.
And also page has back button.

Steps)

  1. selected third tab on the sample multiview
  2. clicked back button on topbar
  3. clicked list and back to the sample multiview
  4. show the selected third tab.

Question)
How I set active on first tab on the sample multiview after returning from back button?

  • I can show first multiview.
  • but I cannot set first tab. just remained third tab.