java.lang.IllegalStateException: no current navigation node in Kotlin NavigationComponent App - firebase

Question

I was developing an Kotin App which make use of Navigation component to moves between the diferents screen of the App.
My problems comes when I try to separate the root_navigation.xml of the main_navigation.xml
The main structure of my app is a splashScreen which send you to LoginScreen, where you can authenticated which firebase via Googe Provider or email/password provider.
The HGoogle Authentication works fine, and send you to the HomeFragment of the App, but the Authentication with email/password rise the above title error.
The code of my navigation files are the following
mobile_navigation.xml
<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/mobile_navigation"
app:startDestination="#+id/nav_login">
<fragment
android:id="#+id/nav_login"
android:name="com.example.appadoskotlin2.ui.login.LoginFragment"
android:label="Login"
tools:layout="#layout/fragment_login">
<action
android:id="#+id/navigation_login_to_navigation_home"
app:destination="#id/nav_home"/>
</fragment>
<fragment
android:id="#+id/nav_home"
android:name="com.example.appadoskotlin2.ui.home.HomeFragment"
android:label="#string/menu_home"
tools:layout="#layout/fragment_home">
<action
android:id="#+id/navigation_home_to_navigation_item_home"
app:destination="#id/navigation_item_home"/>
</fragment>
<fragment
android:id="#+id/navigation_item_home"
android:name="com.example.appadoskotlin2.ui.home.ItemServiceFragment"
android:label="Servicios"
tools:layout="#layout/item_list">
<argument
android:name="item"
app:argType="com.example.appadoskotlin2.data.Service"/>
</fragment>
<fragment
android:id="#+id/nav_contract"
android:name="com.example.appadoskotlin2.ui.contract.ContractFragment"
android:label="#string/menu_contract"
tools:layout="#layout/fragment_contract">
<action
android:id="#+id/navigation_contract_to_navigation_item_contract"
app:destination="#id/navigation_item_contract"/>
</fragment>
<fragment
android:id="#+id/navigation_item_contract"
android:name="com.example.appadoskotlin2.ui.home.ItemServiceFragment"
android:label="Servicios"
tools:layout="#layout/item_list">
</fragment>
<fragment
android:id="#+id/nav_publish"
android:name="com.example.appadoskotlin2.ui.publish.PublishFragment"
android:label="#string/menu_publish"
tools:layout="#layout/fragment_publish">
<action
android:id="#+id/navigation_publish_to_navigation_item_publish"
app:destination="#id/navigation_item_publish"/>
</fragment>
<fragment
android:id="#+id/navigation_item_publish"
android:name="com.example.appadoskotlin2.ui.publish.ItemPublishFragment"
android:label="Servicios"
tools:layout="#layout/item_list">
</fragment>
</navigation>
root_navigation.xml
<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/root_navigation"
app:startDestination="#+id/navigation_splash">
<activity
android:id="#+id/navigation_splash"
android:name="com.example.appadoskotlin2.SplashActivity"
android:label="activity_splash"
tools:layout="#layout/activity_splash" >
<action
android:id="#+id/action_navigation_splash_to_navigation_login"
app:destination="#id/navigation_login" />
</activity>
<activity
android:id="#+id/navigation_login"
android:name="com.example.appadoskotlin2.MainActivity"
android:label="activity_login"
tools:layout="#layout/activity_main" >
<action
android:id="#+id/action_navigation_login_to_navigation_main"
app:destination="#id/navigation_main" />
</activity>
<activity
android:id="#+id/navigation_main"
android:name="com.example.appadoskotlin2.MainActivity"
android:label="MainActivity"
tools:layout="#layout/activity_main"/>
</navigation>
And the code of my LoginFragment and MainActivty of the App are these:
MainActivity.kt
package com.example.appadoskotlin2
import android.os.Bundle
import android.view.Menu
import com.google.android.material.snackbar.Snackbar
import com.google.android.material.navigation.NavigationView
import androidx.navigation.findNavController
import androidx.navigation.ui.AppBarConfiguration
import androidx.navigation.ui.navigateUp
import androidx.navigation.ui.setupActionBarWithNavController
import androidx.navigation.ui.setupWithNavController
import androidx.drawerlayout.widget.DrawerLayout
import androidx.appcompat.app.AppCompatActivity
import com.example.appadoskotlin2.databinding.ActivityMainBinding
import com.example.appadoskotlin2.ui.home.HomeFragment
class MainActivity : AppCompatActivity() {
private lateinit var appBarConfiguration: AppBarConfiguration
private lateinit var binding: ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
setSupportActionBar(binding.appBarMain.toolbar)
binding.appBarMain.fab.setOnClickListener { view ->
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show()
}
val drawerLayout: DrawerLayout = binding.drawerLayout
val navView: NavigationView = binding.navView
val navController = findNavController(R.id.nav_host_fragment_content_main)
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
appBarConfiguration = AppBarConfiguration(setOf(R.id.nav_login,
R.id.nav_home, R.id.nav_contract, R.id.nav_publish), drawerLayout)
setupActionBarWithNavController(navController, appBarConfiguration)
navView.setupWithNavController(navController)
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
// Inflate the menu; this adds items to the action bar if it is present.
menuInflater.inflate(R.menu.main, menu)
return true
}
override fun onSupportNavigateUp(): Boolean {
val navController = findNavController(R.id.nav_host_fragment_content_main)
return navController.navigateUp(appBarConfiguration) || super.onSupportNavigateUp()
}
}
LoginFragment.kt
package com.example.appadoskotlin2.ui.login
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Toast
import androidx.fragment.app.Fragment
import androidx.navigation.NavController
import androidx.navigation.Navigation
import com.example.appadoskotlin2.R
import com.example.appadoskotlin2.databinding.FragmentLoginBinding
import com.example.appadoskotlin2.ui.diologs.LoginDialog
import com.example.appadoskotlin2.ui.diologs.RegisterDialog
import com.google.android.gms.auth.api.signin.GoogleSignIn
import com.google.android.gms.auth.api.signin.GoogleSignInClient
import com.google.android.gms.auth.api.signin.GoogleSignInOptions
import com.google.android.material.button.MaterialButton
import com.google.firebase.FirebaseApp
import com.google.firebase.auth.FirebaseAuth
class LoginFragment: Fragment() {
private val RC_SIGN_IN = 123
private lateinit var navController : NavController
private var _binding: FragmentLoginBinding? = null
private val binding get() = _binding!!
private var firebaseAuth: FirebaseAuth? = null
private var mGoogleSignIn: GoogleSignInClient? = null
private var btn_google: MaterialButton? = null
private var btn_register: MaterialButton? = null
private var btn_login: MaterialButton? = null
private var diolog_register: RegisterDialog? = null
private var diolog_login: LoginDialog? = null
//TODO("Configurar firebase y linkear la vista")
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?,
): View? {
_binding = FragmentLoginBinding.inflate(inflater, container, false)
val root: View = binding.root
initView(root)
initListeners()
return root
}
private fun initListeners() {
val loginActivity: LoginFragment = this
btn_google?.setOnClickListener(View.OnClickListener {
createRequest()
signIn()
})
btn_register?.setOnClickListener(View.OnClickListener {
diolog_register = RegisterDialog(firebaseAuth, loginActivity)
fragmentManager?.let { it1 -> diolog_register!!.show(it1, "RegisterDiolog") }
})
btn_login?.setOnClickListener(View.OnClickListener {
diolog_login = LoginDialog(firebaseAuth, this.context)
fragmentManager?.let { it1 -> diolog_login!!.show(it1, "LoginDiolog") }
})
}
fun initView(root: View){
btn_google = root.findViewById(R.id.btn_google)
btn_register = root.findViewById(R.id.btn_register)
btn_login = root.findViewById(R.id.btn_login)
context?.let { FirebaseApp.initializeApp(it) }
firebaseAuth = FirebaseAuth.getInstance()
}
private fun signIn() {
val signInIntent = mGoogleSignIn!!.signInIntent
startActivityForResult(signInIntent, RC_SIGN_IN)
showHome()
}
private fun showHome() {
navController = Navigation.findNavController(this.requireView())
navController.navigate(R.id.navigation_login_to_navigation_home)
Toast.makeText(context, "Login completed successfully", Toast.LENGTH_SHORT).show()
}
private fun createRequest() {
val gso = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken("786240463795-o92gljk39cmdd0pra162arebskntkdu5.apps.googleusercontent.com")
.requestEmail()
.build()
mGoogleSignIn = GoogleSignIn.getClient(this.activity, gso)
}
override fun onDestroyView() {
super.onDestroyView()
_binding = null
}
}
As I say everythings works fine until I try to separate the navigation in those two files, in order to differentiate between the LoginNavigation, and the Naviation inside the App once the user is logged.
I don't know if the fact of the LoginScreen be a fragment have something related which the problem.
I hope you can help, and if it's like this take thanks in advance !
[EDIT]
Added the navigation.xml as I changed it after several tips:
Still through the same error.
mobile_navigation.xml
root_navigation.xml

Answer 1

Make sure you implement the navigation graph right way. use fragments.
root_navigation.xml
mobile_navigation.xml
add here your desired fragments you want to navigate from login.
(I suggest use login fragment in splash screen for your app launch. and other fragments implement through main activity)