Your Second Kotlin Android App

Aug 29 2023 · Kotlin 1.8.21, Android 13, Android Studio Flamingo | 2022.2.1

Part 4: Use Jetpack Navigation

31. Pass Data with Safe Args

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Previous episode: 30. Navigate to a Compose Destination Next episode: 32. Add Task List Items

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When navigating to destinations, you sometimes need to pass data to the destination. In this episode, you’ll learn how to pass data to destinations using the Jetpack Compose navigation library.

buildscript {
    dependencies {
        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.5.3"
    }
}
id 'androidx.navigation.safeargs.kotlin'
taskName: String?,
onBackPressed: () -> Unit
composable(
    route = "${Screens.TaskDetailScreen.route}/{taskListName}",
    arguments = listOf(navArgument("taskListName") { type = NavType.StringType })
) {
    TaskDetailScreen(
        taskName = it.arguments?.getString("taskListName"),
        onBackPressed = { navController.popBackStack() }
    )
}

navController.navigate("${Screens.TaskDetailScreen.route}/$taskListName")