Full Guide to Jetpack Compose Effect Handlers

The new effect handlers in Jetpack Compose can be quite a pain to deal with if you don't fully understand their purpose. However, they're super important to write performant Jetpack Compose code without side-effects.
This video once and for all goes through all these effect handlers, so you'll know what it's about afterwards.

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00:00 - What is a side-effect?
03:34 - LaunchedEffect
09:11 - rememberCoroutineScope
11:08 - rememberUpdatedState
13:03 - DisposableEffect
15:53 - SideEffect
17:20 - produceState
19:12 - derivedStateOf
22:51 - snapshotFlow

[thegreatwarrior]

For me you are the best channel for Android development

[re]

Philipp is forever invited to my home for dinner. Such nice content and delivery.

[allanandliftedhands]

I always check on my notifications to make sure i did not miss a new video from this guy

[OnlineEntrepreneurTools]

Thanks for this! Although my mind couldn't absorb any of the discussed effect. Part 1 to 9 is clear and easy to follow as a newbie of Jetpack Compose. This part (Part 10) doesn't have any relevance in almost all discussed subjects in parts 1 to 9 that's why I couldn't comprehend. Maybe this should be moved in a more advanced playlist for compose. I will just skip to the next part hopefully I am not totally lost as I really love the tutorials. I'll take note on this effect handlers and when I got to the point when I already need this subject then I'll just get back here. Thanks Philipp! Cheers!

[alihosseinnezhad]

Thank you Philipp, You explain contents with interesting examples.
Here is one of the best channel for android.
👏👏

[kepper]

THANK YOU SO MUCH, just this afternoon i was duct taping together my own event system from snippets of code i found online, but the one you show in LaunchedEffect part is so much better and cleaner! Thanks! The rest of the video is also great as well!

[MetehanBOLAT]

You are the few youtube channels that I have turned on notifications on :D You touch on very important points as always. Thanks.

[hadjsaidaoumer]

Thanks Philipp 🥰, You are the best teacher 🙏

[GakisStylianos]

Just be careful, think of derivedStateOf just as you would mutableStateOf in a sense that it needs to be remembered! Otherwise this isn't remembered and in case of recomposition will just be called again from scratch. And overall it feels like your explanation on derivedStateOf could be improved a bit. You didn't mention anything about how it implicitly "subscribes" to the state objects that are being accessed in there, but doesn't have any mechanism to update itself when non-state objects are being read in its lambda are changed so it would then show stale data.
I really suggest people to read the excellent documentation on these, it does a great job explaining with examples how they work.

[alindo]

The only 2 I found useful were LaunchedEffect and DisposableEffect. The rest of them were created to make the interviews harder.

[vedx]

I was struggling with this. Thanks for the video ❤️❤️

[danielkeyes]

Thanks for the video. I appreciated all the examples and the simplicity of them for easier understandability.

[techmarinar]

Gem's channel, thanx man, wish you all the best in your life <3

[themisterravenous]

awesome video! just one simple thing I notest was he snapshotFlow using the distincUntilChanged(), actually the snapshotFlow itself is already handling it, so it will get the latest value of the state if its value is different, so in this case you dont need call the distinctUntilChanged. btw thanks a lot for this video it helped a lot to understand all of them <3

[AhsanAli-vzmg]

Seriously I was waiting for this video
Thanks 😊

[original_anu]

Months later, my webview was playing audio event after navigating away. Destroying it in DisposableEffect did the trick.
Good thing I bookmarked this video 😁

[azatnabiullin]

On 7:02 you said that code in LaunchedEffect only once when screen composed for the first time. How another Event can happen in this case? E.g. it collects first event - ShowSnackbar and then Navigate event happens but you told that code executed only once

[akshaytyagi]

at 3:00 you said its a terrible practise to directly call api inside composable. Can you please tell what is the best practise ?

[ifedayoadekoya]

I’m trying to run a recursive task every 15seconds (like call an api) on my jetpack screen, how can I achieve this with launched effect or any other Android class without using workmanager.

[sbudekc]

what's the hotkey that you use at 15:28 to move the line up, through a brace, into onDispose scope?