This is common TextWatcher for EditText component to avoid boiler plate code!!

CommonTextWatcher.kt

class CommonTextWatcher(
    private val beforeChanged:((CharSequence?,Int,Int,Int)->Unit)={_,_,_,_->},
    private val afterChanged:((Editable?)->Unit)={},
    private val onChanged:(CharSequence?,Int,Int,Int)->Unit
):TextWatcher {
    override fun afterTextChanged(p0: Editable?) {
        afterChanged(p0)
    }

    override fun beforeTextChanged(char: CharSequence?, start: Int, count: Int, after: Int) {
       beforeChanged(char,start,count,after)
    }

    override fun onTextChanged(char: CharSequence?, start: Int, before: Int, count: Int) {
        onChanged(char,start,before,count)
    }
}