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kotlinlang

How to use TextWatcher - methods -
```override fun afterTextChanged(editable: Editable?)```
in a TextField component in Compose?

So the simplest thing I can think of is do this.
```LaunchedEffect(textFieldText) {
    // do afterTextChanged
}```
Where `textFieldText` is the variable you pass into TextField.

There are other ways depending on your use case, but I'd need more info on what you're doing.

Thanks Dominic - this is good - But LaunchedEffect() gets called for every character I type - So within this LaunchedEffect(text!!) - I need to do an operation after entire text has been entered. so want an equivalent of afterTextChanged() so only after entire text is entered I can get a handle

How do you know when the text has stopped changing though? You don't really know when the user is done typing.

and do my operation only once instead of multiple times as every character gets entered in the Textfield

In conventional case
```tField!!.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) {}
})```
I think afterTextChanged get called once focus is removed - am I right?

Ohhhhh, focus removal, there's probably a modifier for that.

(Sorry, haven't done Android in a long time)

I understand that we don’t know when the user has stopped typing - I am trying to see if performance can be improved here instead of doing of going thru mutiple times. I will explore focus modifier .

There's also `snapshotFlow { }` which will allow you to optimise with flow operators.