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benigumocom/A-NavDisplay-ActivityScopedViewModel.kt

Last active May 1, 2026 07:20
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【Jetpack Compose Navigation3】EntryDecorator と ViewModel の「key」の深い関係 https://android.benigumo.com/20260501/entrydecorator-viewmodel-key/
Raw
A-NavDisplay-ActivityScopedViewModel.kt
NavDisplay(
backStack = backStack,
modifier = Modifier.padding(innerPadding),
onBack = { backStack.removeLastOrNull() },
// entryDecorators = listOf( // *
// rememberSaveableStateHolderNavEntryDecorator()
// ),
entryProvider = entryProvider {
entry<Search> { key ->
SearchScreen(
viewModel = viewModel<SearchViewModel>(
key = key.toString(), // *
factory = SearchViewModel.Factory(key)
),
onSearch = { keyword: String ->
backStack.add(Result(keyword))
}
)
}
entry<Result> { key ->
ResultScreen(
viewModel = viewModel(
key = key.toString(), // *
factory = ResultViewModel.Factory(key)
),
onClick = { id: String ->
backStack.add(Detail(id))
}
)
}
entry<Detail> { key ->
DetailScreen(
viewModel = viewModel(
key = key.toString(), // *
factory = DetailViewModel.Factory(key)
)
)
}
}
)
Raw
B-NavDisplay-EntryScopedViewModel.kt.kt
NavDisplay(
backStack = backStack,
modifier = Modifier.padding(innerPadding),
onBack = { backStack.removeLastOrNull() },
entryDecorators = listOf(
rememberSaveableStateHolderNavEntryDecorator(),
rememberViewModelStoreNavEntryDecorator() // *
),
entryProvider = entryProvider {
entry<Search> { key ->
SearchScreen(
viewModel = viewModel<SearchViewModel>(
factory = SearchViewModel.Factory(key)
),
onSearch = { keyword: String ->
backStack.add(Result(keyword))
}
)
}
entry<Result> { key ->
ResultScreen(
viewModel = viewModel(
factory = ResultViewModel.Factory(key)
),
onClick = { id: String ->
backStack.add(Detail(id))
}
)
}
entry<Detail> { key ->
DetailScreen(
viewModel = viewModel(
factory = DetailViewModel.Factory(key)
)
)
}
}
)
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benigumocom commented May 1, 2026

【Jetpack Compose Navigation3】EntryDecorator と ViewModel の「key」の深い関係
https://android.benigumo.com/20260501/entrydecorator-viewmodel-key/

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