Hello everyone, I made a very simple app using compose and it crashes with the error :

java.lang.IllegalArgumentException: Key 640122159 was already registered. Please call unregister before registering again

The code can be found here https://github.com/bmonjoie/ComposeTipsCalculator I have seriously no idea what I'm doing wrong so if someone could give me any pointers, that would be really appreciated

hey, it is a known bug, where we don't do keys namespacing automatically yet, but it will be fixed. for now please change

(tips + null as TipsEntry?).forEach { entry ->

Entry(entry, onEntryChanged)

}

to

(tips + null as TipsEntry?).forEach { entry ->

key(entry) {

Entry(entry, onEntryChanged)

}

}

inside your Tips function

Thank you very much. I tried the following :

(tips + null as TipsEntry?).forEach { entry ->
            val index = tips.indexOf(entry)
            key(if (index < 0) tips.size else index) {
                Entry(entry, onEntryChanged)
            }
        }

The first time I insert something in the empty field, it works. If i then proceed to the second line (now empty field) and type 1 number, the third line is added but if I enter again a number (in the second field, not changing the focus), it crashes with the same error

right, basically you need to provide something unique in the key function. seems like some of your entries are equals to each other