Performance best practices for Jetpack Compose

Jetpack Compose can feel like magic, but what do you do when the magic isn't as performant as you want? Discover best practices in Jetpack Compose with regards to performance, common mistakes, and how to avoid them.

Resources:

Speakers: Chuck Jazdzewski, Ben Trengrove

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#GoogleIO #Featured #JetpackCompose

[kenbX]

Legends say that even to this day, Chuck is still waving to you.
On a more serious note, great content, it was very helpful!

[carapas_]

Very usefull video. Coming back here to watch some tricks again and again, so I decided to write some timecodes to help myself and maybe some of you too:
1:00 - Configuration
1:55 - Something to remember
3:57 - LazyList Key
5:47 - derivedStateOf
8:10 - Compose primary phases
9:57 - defer reading state
11:36 - Running backwards (Backwards write)
15:26 - Covering your bases (Baseline profiles)

[IncompleteTheory]

More of this! This is extremely helpful. Personally I'd like more tips on to spot and avoid unnecessary recompositions.

[paulroos]

More of this, please. Something I have learned is one learns quite a lot about a new language/platform when one programs for performance.

[jaya-surya-t]

This is a very helpful video for compose optimizations, appreciate it.

[hocinehope]

Thank you for this video and to the dev team, keep going, you are on the good way !

[theapache]

Thank you so much for this video! Enjoyed to the max

[Mrdresden]

Great content! While watching this I was litterally dealing with startup jank, that is probably now just the JIT.

[Daaaaaaavid]

The uggliest thing about Compose and which applies to each new stuff is when it allows you to do something which is not recommended to do.

[VirgilioSolano]

The most completely class about compose tricks... thank you so much :)

[nikolayrogchev]

Amazing, short and on the point, keep up the good work

[hardlife]

This is good stuff. I owe you guys some ☕

[minasmina]

Is this information available in a blog post or in the compose documentation?

[arjunbhat]

We want more of this from Engineers from inside.

[GakisStylianos]

This was a really information dense video! But very well presented nonetheless

[Maksim-]

4:14 if item 5 and 4 are swapped, then only they should be recomposed, right? Items 1, 2, 3, 6, 7 and subsequent items will keep their indexes which are used as keys. Do we need a LazyList Key in this case?

[anudeepananth]

So the macrobenchmark library let's us see what the improvements might be for the user in the release build but does not guarantee it? And also we do not need to do anything to ensure baseline profiles are added to the app, it's added by default. Is that right?

[nayandhabarde]

Why was this not highlighted in first place

[FreedivingTrainer]

If I use Canvas(modifier = ..) in Compose and pass value which frequently changes, should I use drawBehind method? And how? Put Canvas in this method?

[xpopcornx]

Do you really need R8 enabled? Will Compose be slower without it than the xml view system?