How to detect if users stop typing in EditText android

Question

I have an EditText field in my layout. I want to perform an action when the user stops typing in that edittext field. I have implemented TextWatcher and use its functions

Answer 1

If you use Kotlin, use this extension function:

fun TextView.afterTextChangedDelayed(afterTextChanged: (String) -> Unit) {
    this.addTextChangedListener(object : TextWatcher {
        var timer: CountDownTimer? = null

        override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}

        override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}

        override fun afterTextChanged(editable: Editable?) {
            timer?.cancel()
            timer = object : CountDownTimer(1000, 1500) {
                override fun onTick(millisUntilFinished: Long) {}
                override fun onFinish() { 
                    afterTextChanged.invoke(editable.toString()) 
                }
            }.start()
        }
    })
}

Use example:

editTextPassword.afterTextChangedDelayed {
    registerViewModel.addUserPassword(it)
}