Call View.OnClickListener from Snackbar

Asked Jun 24 '20 at 19:01

Active Jun 24 '20 at 19:25

Viewed 56 times

I am trying to call ViewModel from my activity in a snackbar and since it requires a onClickListener it doesn't let me just do a simple

Snackbar.make(mViewBinding.root, "Note has been deleted", Snackbar.LENGTH_LONG).apply {
    setAction("Undo", mViewModel.insertNote(event.data!!))
}

So the solution is to call with a View.OnClickListener but I found a weird solution that I'm trying to understand and I'd like to know if any of you could explain to me this.

Snackbar.make(mViewBinding.root, "Note has been deleted", Snackbar.LENGTH_LONG).apply {
    setAction("Undo"){
        mViewModel.insertNote(event.data!!)
    }
}

Question: Why does setting a "{" works the same way? Is it an anonymous function?

asked Jun 24 '20 at 19:01

Barrufet

2

Sorry are you sure both work? First would only work if whatever returned by insertNot implements interface OnClickListener. I very much doubt that's the case. – ror Jun 24 '20 at 19:21
1

You should read a good article about Kotlin lambdas – Quanta Jun 24 '20 at 20:00
1

This is called SAM conversion. https://kotlinlang.org/docs/reference/java-interop.html#sam-conversions – Tenfour04 Jun 24 '20 at 20:02
No the first doesn't work, the second yes. The first is what i did before getting into it. @ror – Barrufet Jun 24 '20 at 20:14
On my way! @Qunata – Barrufet Jun 24 '20 at 20:14
Thank you very much for providing me a link @Tenfour04 I'll take a look now! – Barrufet Jun 24 '20 at 20:15

Call View.OnClickListener from Snackbar

0 Answers0