sequence concatadapter based on data type

Question

is it possible to use concatadapter based on data type.

normal implementation of concatadapter is

 val concatadapter = listOf(firstAdapter, secondAdapter, thirdAdapter)

while trying this code,

 for (nums in 0..15) {
      if (nums % 2 == 0) {
           concatAdapter.add(firstAdapter)
      } else {
           concatAdapter.add(secondAdapter)
      }
 }

the first "firstAdapter" and "secondAdapter" will be display. But the next "firstAdapter" and "secondAdapter" is not displayed.

is there anything wrong on this code?

Answer 1

The reason that other adapter is not visible is because you are adding same object for "firstAdapter" and "secondAdapter" every time in concat adapter.

you have to initialise "firstAdapter" and "secondAdapter" when adding to concat adapter like below:

 concatAdapter=ConcatAdapter()
    for (nums in 0..15) {
        if (nums % 2 == 0) {
            concatAdapter.addAdapter(FirstAdapter(nums))
        } else {
            concatAdapter.addAdapter(SecondAdapter(nums))
        }
    }
    var layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false)
    binding.recycler.layoutManager = layoutManager
    binding.recycler.adapter=concatAdapter