android - 如何使用 Jetpack Compose + Navigation 处理后退导航(无 fragment )

Question

我正在尝试导航让我们说从入职到仪表板等，一旦用户点击仪表板就会弹出入职，但仍然有“后退 Action ”，我最终再次入职。
这是示例代码:

@AndroidEntryPoint
class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContent {
            MainUI()
        }
    }
}

@Composable
fun MainUI() {
    val navController = rememberNavController()

    NavHost(
        navController = navController,
        startDestination = "onboarding"
    ) {
        composable("onboarding") {
            Column {
                Text("I am on onboarding")
                Button(onClick = {
                    navController.navigate("dashboard") {
                        popUpTo("dashboard") // I want to get rid of onboarding here
                    }
                }) {
                    Text("go to dashboard")
                }
            }
        }
        composable("dashboard") {
            Column {
                Text("I am on dashboard")
                Button(onClick = {
                    navController.navigate("detail")
                }) {
                    Text("go to detail")
                }
            }
        }
        composable("detail") {
            Text("I am on detail")
        }
    }
}

这也不起作用

navController.navigate("dashboard") {
    popUpTo("dashboard") {
            inclusive = true // no difference
        }

// ....

    popUpTo("onboarding") // also nothing

// ....

    popUpTo("onboarding") {
            inclusive = true // this crashes -> NavGraph cannot be cast to ComposeNavigator$Destination
        }

}

出于某种原因，这种工作方式，所以仪表板被解雇了，从细节上我最终加入了🤦

navController.navigate("detail") {
     popUpTo("dashboard") {
            inclusive = true
     }
}

Answer 1

我发现我的解决方案很容易，如果我错了，请赐教。

navController.popBackStack()