TextWatcher For More Than One EditText

AdsFormActivity.kt

class AdsFormActivity : AppCompatActivity() {
    private lateinit var binding: ActivityAdsForm2Binding
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(this, R.layout.activity_ads_form)
        supportActionBar?.hide()
        setClickListeners()
        setTextWatchers()
    }

    private fun setTextWatchers() {
        MultiTextWatcher()
            .registerEditText(binding.etCompanyAddress)
            .registerEditText(binding.etCompanyIntro)
            .registerEditText(binding.etCompanyName)
            .registerEditText(binding.etCompanyPhone)
            .setCallback(object : MultiTextWatcher.TextWatcherWithInstance {
                override fun beforeTextChanged(editText: EditText, s: CharSequence, start: Int, count: Int, after: Int) {
                }

                override fun onTextChanged(editText: EditText, s: CharSequence, start: Int, before: Int, count: Int) {
                    when (editText) {
                        binding.etCompanyAddress -> {
                            //do your logic here
                        }
                        binding.etCompanyPhone -> {
                            //do your logic here and so on
                        }
                    }
                }

                override fun afterTextChanged(editText: EditText, editable: Editable) {

                }
            })
        
    }

MultiTextWatcher.kt

class MultiTextWatcher {

    private var callback: TextWatcherWithInstance? = null

    fun setCallback(callback: TextWatcherWithInstance): MultiTextWatcher {
        this.callback = callback
        return this
    }


    fun registerEditText(editText: EditText): MultiTextWatcher {
        editText.addTextChangedListener(object : TextWatcher {
            override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {
                callback!!.beforeTextChanged(editText, s, start, count, after)
            }

            override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {
                callback!!.onTextChanged(editText, s, start, before, count)
            }

            override fun afterTextChanged(editable: Editable) {
                callback!!.afterTextChanged(editText, editable)
            }
        })

        return this
    }

     interface TextWatcherWithInstance {
        fun beforeTextChanged(editText: EditText, s: CharSequence, start: Int, count: Int, after: Int)

        fun onTextChanged(editText: EditText, s: CharSequence, start: Int, before: Int, count: Int)

        fun afterTextChanged(editText: EditText, editable: Editable)
    }
}