class MainActivity : AppCompatActivity(), OnTextWatcher {

      override fun onCreate(savedInstanceState: Bundle?) { 
      super.onCreate(savedInstanceState)
      setContentView(R.layout.activity_main)

        val etName: EditText = findViewById<View>(R.id.etMainName) as EditText
        val etEmail: EditText = findViewById<View>(R.id.etMainEmail) as EditText
        val etPassword: EditText = findViewById<View>(R.id.etMainPassword) as EditText
        val etPhone: EditText = findViewById<View>(R.id.etMainPhone) as EditText


            MultiTextWatcher(etName).setOnTextWatcher(this)
            MultiTextWatcher(etEmail).setOnTextWatcher(this)
            MultiTextWatcher(etPassword).setOnTextWatcher(this)
            MultiTextWatcher(etPhone).setOnTextWatcher(this)
      }

        override fun beforeTextChanged(
            editText: EditText,
            s: CharSequence,
            start: Int,
            count: Int,
            after: Int
        ) {
            when (editText.id) {
                R.id.etMainEmail -> {
                }
            }
                 Log.i(TAG, "beforeTextChanged: " + s.toString() + "Hint--" + editText.hint)
        }

        override fun onTextChanged(
            editText: EditText,
            s: CharSequence,
            start: Int,
            before: Int,
            count: Int
        ) {
                TODO("Not yet implemented")
        }

        override fun afterTextChanged(editText: EditText, editable: Editable) {
                TODO("Not yet implemented")
        }


        companion object{
            private const val TAG: String = "MultiTextWatcher"
        }
}