search

-- Adapter
fun filterList(filterList: MutableList<Piutang>) {
        // below line is to add our filtered
        // list in our course array list.
        listData = filterList
        // below line is to notify our adapter
        // as change in recycler view data.
        notifyDataSetChanged()
    }

-- Activity
private fun initView(){
        with(binding){
            adapter = AdapterPiutang()
            lvData.layoutManager = LinearLayoutManager(baseContext)
            lvData.adapter = adapter

            txtSearch.addTextChangedListener(object : TextWatcher {
                override fun beforeTextChanged(
                    charSequence: CharSequence,
                    i: Int,
                    i1: Int,
                    i2: Int
                ) {
                }

                override fun onTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {}
                override fun afterTextChanged(editable: Editable) {
                    //after the change calling the method and passing the search input
                    filter(editable.toString())
                }
            })

            btnAdd.setOnClickListener{
                val intent = Intent(baseContext, PiutangInputActivity::class.java)
                startActivity(intent)
            }
        }
    }

    private fun filter(text: String) {
        //new array list that will hold the filtered data
        val filterdNames = mutableListOf<Piutang>()

        //looping through existing elements
        for (s in listData) {
            //if the existing elements contains the search input
            if (s.nama?.lowercase()!!.contains(text.lowercase())) {
                //adding the element to filtered list
                filterdNames.add(s)
            }
        }

        //calling a method of the adapter class and passing the filtered list
        adapter.filterList(filterdNames)
    }