--- title: Why SavedStateHandle Crashes in Jetpack Navigation 3 description: Jetpack Navigation 3 changes how back stack state is managed, breaking the SavedStateHandle-based argument injection that worked in Navigation 2.8. Because... canonical: https://daily.dev/posts/why-savedstatehandle-crashes-in-jetpack-navigation-3-goc7ek0ei twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Why SavedStateHandle Crashes in Jetpack Navigation 3 | daily.dev og:description: Jetpack Navigation 3 changes how back stack state is managed, breaking the SavedStateHandle-based argument injection that worked in Navigation 2.8. Because... og:url: https://daily.dev/posts/why-savedstatehandle-crashes-in-jetpack-navigation-3-goc7ek0ei og:image: https://api.daily.dev/og/posts/goc7Ek0Ei.png og:image:alt: Why SavedStateHandle Crashes in Jetpack Navigation 3 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Why SavedStateHandle Crashes in Jetpack Navigation 3 **[ProAndroidDev](https://daily.dev/sources/pand)** · 5 min read · 2 upvotes · 1 comments ## Summary Jetpack Navigation 3 changes how back stack state is managed, breaking the SavedStateHandle-based argument injection that worked in Navigation 2.8. Because Navigation 3 passes route keys directly to composables rather than serializing them into a bundle, calling toRoute() on an empty SavedStateHandle causes a runtime crash. The fix is Hilt Assisted Injection: annotate the ViewModel constructor with @AssistedInject, mark the route parameter with @Assisted, define an @AssistedFactory, and supply the route instance via a creationCallback in hiltViewModel(). This approach eliminates runtime deserialization errors, enforces compile-time safety, and simplifies unit testing by allowing direct ViewModel instantiation without mocking SavedStateHandle internals. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Ditching SavedStateHandle and rememberSaveable: Embracing State-Aware Routing with Navigation 3](https://daily.dev/posts/ditching-savedstatehandle-and-remembersaveable-embracing-state-aware-routing-with-navigation-3-0kpjnv4ef) · ProAndroidDev · 1 upvotes · 0 comments - [Mastering Navigation 3: Managing Per-Screen ViewModels with NavBackStack](https://daily.dev/posts/mastering-navigation-3-managing-per-screen-viewmodels-with-navbackstack-enocmyifg) · ProAndroidDev · 1 upvotes · 0 comments - [Stop Fighting Your Navigation Library: A Practical Guide to Jetpack Navigation 3](https://daily.dev/posts/stop-fighting-your-navigation-library-a-practical-guide-to-jetpack-navigation-3-rjfnlwddu) · ProAndroidDev · 0 upvotes · 0 comments - [Start with the Simple Idea: Migrating from Jetpack Compose Navigation2 to Navigation3 For Now](https://daily.dev/posts/start-with-the-simple-idea-migrating-from-jetpack-compose-navigation2-to-navigation3-for-now-2nhdxidon) · ProAndroidDev · 1 upvotes · 0 comments --- Tags: [#android](https://daily.dev/tags/android), [#kotlin](https://daily.dev/tags/kotlin), [#jetpack-compose](https://daily.dev/tags/jetpack-compose), [#dependency-injection](https://daily.dev/tags/dependency-injection) [View this post on daily.dev](https://daily.dev/posts/why-savedstatehandle-crashes-in-jetpack-navigation-3-goc7ek0ei) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Why SavedStateHandle Crashes in Jetpack Navigation 3","url":"https://daily.dev/posts/why-savedstatehandle-crashes-in-jetpack-navigation-3-goc7ek0ei","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/why-savedstatehandle-crashes-in-jetpack-navigation-3-goc7ek0ei"},"datePublished":"2026-06-06T07:22:40.174Z","dateModified":"2026-06-06T07:23:02.776Z","description":"Jetpack Navigation 3 changes how back stack state is managed, breaking the SavedStateHandle-based argument injection that worked in Navigation 2.8. 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