Post #9676

Пример использования Jetpack Navigation 3 data object ProductList data class ProductDetail(val id: String) @Composable fun MyApp() { // Create a back stack, specifying the key the app should start with val backStack = remember { mutableStateListOf<Any>(ProductList) } // Supply your back stack to a NavDisplay so it can reflect changes in the UI // ...more on this below... // Push a key onto the back stack (navigate forward), the navigation library will reflect the change in state backStack.add(ProductDetail(id = "ABC")) // Pop a key off the back stack (navigate back), the navigation library will reflect the change in state backStack.removeLastOrNull() } // [END android_compose_navigation3_basic_1] @Composable fun EntryProvider() { val backStack = remember { mutableStateListOf<Any>(ProductList) } NavDisplay( backStack = backStack, // [START android_compose_navigation3_basic_2] entryProvider = { key -> when (key) { is ProductList -> NavEntry(key) { Text("Product List") } is ProductDetail -> NavEntry( key, metadata = mapOf("extraDataKey" to "extraDataValue") ) { Text("Product ${key.id} ") } else -> { NavEntry(Unit) { Text(text = "Invalid Key: $it") } } } } // [END android_compose_navigation3_basic_2] ) } #android#compose#nav3#jetpack