从子片段调用父视图 - 视图寻呼机

Question

I have a fragment with a searchBox and underneath that viewpager is placed , I get access to the searchBox from child like this : (this.parentFragment as TicketListFragment).binding.searchBpx.setOnTextChange {}

in each child fragment everthing works fine , the problem is here: Fragemnt A: (this.parentFragment as TicketListFragment).binding.searchBpx.setOnTextChange { Log.d("accessing to the searchBox from frag a") }

Fragemnt B: (this.parentFragment as TicketListFragment).binding.searchBpx.setOnTextChange { Log.d("accessing to the searchBox from frag B") }

when i go to frag B , and get back to the frag A , the searchBox.setOnTextChange is called from frag B !!, any idea to fix this issue?

Answer 1

You are accessing the parent search view from its children FragmentA and FragmentB. And you set the setOnTextChange on both the fragment.

So before going to another fragment you should remove the listener from the current fragment.

For Example : going From A -> B: Remove the setOnTextChange from Fragment A then proceed to B.