coil-kt/coil

IOS App crashes with `didReceiveMemoryWarning`

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#2765 opened on Dec 28, 2024

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 (7 comments) (0 reactions) (0 assignees)Kotlin (11,779 stars) (757 forks)batch import
help wanted

Description

Describe the bug iOS App Crashes when a LazyColumn is scrolled fast. I have a lazy column with around 500+ items in it. If i scroll the lazy column fast or flick too much, iOS App crashes with didReceiveMemoryWarning error logged in XCode. Android app on the other hand works perfectly fine.

To Reproduce

@Composable
fun MyImage(
    url: String,
    placeholder: Painter? = null,
    error: Painter? = placeholder,
    contentDescription: String,
    modifier: Modifier = Modifier,
    contentScale: ContentScale = ContentScale.Fit
) {
    setSingletonImageLoaderFactory { context ->
        ImageLoader.Builder(context)
            .crossfade(true)
            .coroutineContext(Dispatchers.Default)
            .build()
    }
    AsyncImage(
        model = url,
        contentDescription = contentDescription,
        modifier = modifier,
        contentScale = contentScale,
        placeholder = remember { placeholder },
        error = remember { error },
    )
}

Version 3.0.4

Contributor guide

Tech stack
kotlin
Domain
mobileperformance
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
KotlinCompose MultiplatformCoil library basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
Investigate the memory warning by profiling the iOS app with Instruments. Focus on Coil's image caching mechanism, specifically MemoryCache and the platform specific ImageLoader configuration. Check if the crossfade transition or coroutineContext usage contributes to memory pressure. Look at the source files ImageLoader.kt, MemoryCache.kt, and any iOS specific implementations in the multiplatform module. Review existing issues or discussions about iOS memory management in Coil.