Mida tähendab operatsioon add Androidis Fragmentidega tehingute teostamise kontekstis?

The add operation in the context of fragment transactions in Android means adding a new fragment to the container (usually a ViewGroup) without removing or replacing existing fragments. The new fragment is overlaid on the current ones, and its interface becomes visible.

Example of usage:

FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.add(R.id.container, new MyFragment());
transaction.commit();

This differs from the replace operation, which removes all current fragments from the container and adds a new one. Add is useful when you want to overlay multiple fragments or keep the previous ones in the stack.