DDihanov

import java.io.File

val input = File("src/main/kotlin/day13/Day13.txt").readLines().mapNotNull {
    when (it) {
        "" -> null
        else -> it
    }
}

sealed class Data {

DDihanov

// usage:
// spannedStringFormatter.format(context.getText(R.string.mystring), "url1", "url2"))
// where R.string.mystring is <string name="mystring"><![CDATA[ Link one <a href="%s"><b> Link one</b></a> and link two <a href="%s"><b>Link two</b></a>.]]></string>
class SpannedStringFormatter {
    /**
     * replace all the %s in the spanned string with corresponding URLs
     */
    fun format(format: CharSequence, vararg urls: String?): SpannedString {
        // make a spannable copy so that we can change the spans (Spanned is immutable)

DDihanov

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:id="@id/home_flow"
        android:icon="@drawable/ic_home_black_24dp"
        android:title="@string/title_home" />

    <item
        android:id="@id/dashboard_flow"

DDihanov

class HomeFragment : Fragment() {
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_home, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {

DDihanov

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingTop="?attr/actionBarSize">

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/nav_view"

DDihanov

class MainActivity : AppCompatActivity(), ToFlowNavigatable {
    private val navigator: Navigator = Navigator()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val navView: BottomNavigationView = findViewById(R.id.nav_view)

        val navController = findNavController(R.id.nav_host_fragment)

DDihanov

interface ToFlowNavigatable {
    fun navigateToFlow(flow: NavigationFlow)
}

DDihanov

sealed class NavigationFlow {
    object HomeFlow : NavigationFlow()
    object DashboardFlow : NavigationFlow()
}

DDihanov

class Navigator {
    lateinit var navController: NavController

    fun navigateToFlow(navigationFlow: NavigationFlow) = when (navigationFlow) {
        NavigationFlow.HomeFlow -> navController.navigate(MainNavGraphDirections.actionGlobalHomeFlow())
        NavigationFlow.DashboardFlow -> navController.navigate(MainNavGraphDirections.actionGlobalDashboardFlow())
    }
}

DDihanov

class StartFragment : Fragment() {
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_start, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {