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January 10, 2023 15:44
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Helper functions to manually create your own SavedStateHandle with ease.
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| fun ComponentActivity.lazySavedStateHandle( | |
| key: String = this::class.java.canonicalName, | |
| defaultState: Bundle? = intent?.extras, | |
| ): Lazy<SavedStateHandle> = lazy(LazyThreadSafetyMode.NONE) { | |
| SavedStateHandle(savedStateRegistry, key, defaultState) | |
| } | |
| fun Fragment.lazySavedStateHandle( | |
| key: String = this::class.java.canonicalName, | |
| defaultState: Bundle? = arguments, | |
| ): Lazy<SavedStateHandle> = lazy(LazyThreadSafetyMode.NONE) { | |
| SavedStateHandle(savedStateRegistry, key, defaultState) | |
| } | |
| private fun SavedStateHandle( | |
| savedStateRegistry: SavedStateRegistry, | |
| key: String, | |
| defaultState: Bundle?, | |
| ): SavedStateHandle { | |
| val restoredState = savedStateRegistry.consumeRestoredStateForKey(key) | |
| val handle = SavedStateHandle.createHandle(restoredState, defaultState) | |
| savedStateRegistry.registerSavedStateProvider(key, handle.savedStateProvider()) | |
| return handle | |
| } |
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