Should I use DataBinding in a RecyclerView? Or is ...

# android

[Vague]

Should I use DataBinding in a RecyclerView? Or is it an overkill?

[escodro]

In the component or in the items? In the RecyclerView itself, it may be not necessary. But in the items is a good call to avoid ViewHolders.

[escodro]

You can use a more generic solution for all Adapters with Data Binding.
https://github.com/igorescodro/alkaa/blob/master/app/src/main/java/com/escodro/alkaa/common/databinding/BindingHolder.kt

[Vague]

Using it in place of findViewById...

[escodro]

You can simply use Kotlin Synthetic access for it. Or wait for the new View Binding. 😊

[Vague]

Meh, yeah...
Kotlin Synthetic in comparison to DataBinding, any performance difference or tradeoffs?

[escodro]

Image from iOS.jpg

[escodro]

That was shown in Google IO. The "???" Is the new View Binding.

[Vague]

I'm guessing it's not stable yet?

[escodro]

No, it is not. I would go with Synthetic if you only need the findViewById. Data Binding seems like a overkill.

[Vague]

Okay... Thanks

[rook]

My information might be out-of-date, but one consideration you might make is that synthetics in `ViewHolder`s have to be re-evaluated every time it is reused. This can affect performance

[ghedeon]

isn't it what LayoutContainer for? Iirc it will be cached.

[rook]

You’re correct. I wasn’t aware of LayoutContainer until you mentioned it. Relevant docs: https://kotlinlang.org/docs/tutorials/android-plugin.html#layoutcontainer-support

[Sergio C.]

What's the objective of layout container?