How can you reset all active fragments in the back stack and return to the initial fragment using alternative methods other than clearBackStack?

To reset all active fragments in the back stack and return to the initial fragment without using clearBackStack, you can use the popBackStack method with the POP_BACK_STACK_INCLUSIVE flag.

Example:

// Suppose the initial fragment has the tag "start_fragment"
supportFragmentManager.popBackStack("start_fragment", FragmentManager.POP_BACK_STACK_INCLUSIVE)

This call will remove all fragments up to and including the specified tag from the stack, after which you can add the initial fragment again if it was removed.

Alternatively, you can use a loop to call popBackStack() repeatedly until the desired fragment remains, or use the popBackStackImmediate method for synchronous removal.

You can also replace the stack by using the replace() method to replace the current fragment and not add the transaction to the back stack, thereby clearing the history.