Navcontroller popbackstack not working

Navcontroller popbackstack not working

For example, if you have two fragment destinations on the navigation graph fragmentA and fragmentB, and there is only one action from fragmentA to fragmentB. popBackStack(). 4. 0-alpha02 and working Bloom app with all new Architecture components. 2. ts transition method when switching between pages. fun ExampleNavHost(. I use android navigation component and want to save backstack after user press button and restore it after. nav_host_fragment) Navigation. You signed out in another tab or window. This then triggers your navigate() call again, pushing you right back to your AcceptCodeFragment. 0, you can get a reference to the NavBackStackEntry for any destination on the navigation stack by calling NavController. setPopUpTo(firstPopableEntry, true). popBackStack() methods, respectively, to remove (or pop) the top destination off of the stack. Nov 9, 2022 · What I'm looking for is a way to delete all saved states programmatically. e. popBackStack() without any arguments. 2 days ago · Navigation with Compose. – Deepak Rajput. popBackStack(), I got fatal crash (Fatal signal 11 (SIGSEGV)). popBackStack(route = "A", inclusive = false) answered Oct 2, 2021 at 10:38. startedFromDeeplink: Boolean = rememberStartedFromDeeplink(), Dec 8, 2022 · For that, you need to first navigate to Home by using navController. route, true) ` <- this code doesn't work to Over all the code in the common user is the same as the admin user however it does not navigate back to AdminHomeScreen from the screen for editing contents Feb 4, 2022 · I'm working inside fragments, and not in the hosting activity – Claude Hangui. what you mean app is refreshed, You mean your padding values Dec 7, 2023 · Method popBackStack() returns false if back stack was empty and nothing was popped. Looks like the topOulet property is wrong. Here's the code: AnimatedVisibility(. E. A user logs into the app, which uses bottom navigation the bottom navbar has a 5 navigation graphs. popbackstack is called to do something. Any idea or thought? Jul 21, 2022 · How to navigate between screens. Keep in mind that you should keep sharedViewModels as small as possible as they do not get destroyed until the activity is destroyed. Navigation. Oct 18, 2019 · You signed in with another tab or window. Aug 9, 2021 · 5. navigation. id) {. If you want to show this icon only in some composables you can use a parameter, like canPop in the following example, and set it true in the composable where you want handle the back button. Jul 17, 2019 · 6. To create a NavController when using Jetpack Compose, call Nov 23, 2018 · Plus if you want to have back button support you need in onCreate method to add: NavigationUI. Oct 31, 2020 · If the next would be the start destination I do not call navigateUp() but instead a direct navigate() with an argument that tells the fragment and most important NavOptions that clear the backstack to not double the startDestination in the back stack (didn't work without the NavOptions). 3. addNewWorkoutFragment) } Apr 8, 2022 · onClick = { navController. It works fine when click the "Back" button in the emulator. action_fragmentA_to_fragmentB) will result in IllegalArgumentException when you were already on fragmentB. My code is the same side by side with similar code, that is working (for another set of screens), but this one doesn't. Here's a simple example: class MyFragment: Fragment() {. Note: If you are not familiar with Compose, review the Jetpack Compose resources before continuing. Your issue is not with the back button not working, it is that LiveData is for state, not events like your loginResponse. bottomNavigationView. Navigate between routes. This is the code of my 3rd screen where it does go to 4th screen and also goes back to 2nd screen properly. state. I found 2 methods. For your "NOTE 1" : FragmentTransaction. 0 also if I add a listerner to BottomNavigationView and handle the navigation my self in addition to NavigationUI. addToBackStack("more"). Playing with the new fragment navigation, I wanted to dump the current backstack to the log for information purposes to learn how it all works. navController. findNavController(). @Composable. Apr 24, 2021 · In this case the current activity (determined by the context used to create this NavController) will be finished and the user will be taken to an appropriate destination in this app on its own task. Sep 11, 2020 · I tried the below code for reloading but it isn't working. popbackstack() SearchScreen( backNavigation = { viewModel. popBackStack(@IdRes int destinationId, boolean inclusive) 由于此时的需求是要回到userFragment,因此 Nov 11, 2022 · navController. findNavController(Activity, @IdRes int viewId) Navigation. 0-beta08 and navigation compose version 2. If you you are adding the fragment transactions to the Backstack, there is no need of handling the Backstack in onBackPressed(). This can occur in the following cases: popBackStack() did not pop anything from the stack. May 7, 2024 · That's it for setting up the . Nov 14, 2023 · When this happens, there's 50% transparent black overlay on screen one which appears 'slowly' and disappears 'slowly' when the reverse happens. destination?. popBackStack() returns a boolean indicating whether it successfully popped back to another destination. detach(this). I am using Jetpack Navigation Components. g. EDIT Calling navController. Navigation Flow. val firstPopableEntry = navController. If this doesn't work is possible that Login screen is not on the backstack. setupWithNavController(. findNavController(). Within the lambda function pass the available destinations (screens) of your app. value. So you can try implementing logic that evaluates whether there is something available in the backstack to pop. But our logic requires also to know which was the previous destination for the current destination in order to hide/show the bottom Aug 8, 2021 · Changing navController state doesn't make it container recompose, that's why this navigationIcon stays null. popBackStack (). Therefore I wrote following simple extension function: Dec 23, 2018 · The solution is to manually set the NavController to each view contained in the activity. remove() to setting the value of the LiveData to null instead. addToBackStack("fragB"); fragmentTransaction. visible = true, enter = fadeIn(. popBackStack() then use navController. edited Jun 23, 2022 at 10:50. (Iea805, b/327229511) Version 2. frameContent, moreFragment). Feb 5, 2020 at 4:32. Jan 3, 2024 · Starting with Navigation 2. val graph = R. At this point if the user click back the app should go in foreground. currentDestination. 2 main issues were: Navigating to blank screen when double tapping on back button that invokes popBackStack () Invoking popBackStack () before navigation animation to new screen is finished leads Sep 19, 2014 · Step:2 After that I attached replaced the Fragment with the following code: FragmentManager manager = getSupportFragmentManager(); manager. popBackStack() Everything works fine: when I first go to SearchPlaceDialog, it correctly passes the value back to Main, which calls 'setplace ()'. 0-alpha04 contains these commits. findFragmentById(R. You can remove last item from the back stack before navigating to the main screen using popBackStack: @Tanjimahmed It's working totally fine to me. fragB and include POP_BACK_STACK_INCLUSIVE. Jul 14, 2021 · The app has multiple navigation graphs that cater for the different navigation in the app. replace, popBackStack will call FragmentTransaction. popBackStack(saveState = false) as suggested is not working because it tells me "Cannot find a parameter with this name: saveState" Apr 26, 2020 · 从userFragment一直进入到changePasswordNextFragment,当我在栈顶的逻辑做完后,需要回到userFragment时,Navigation组件是有提供了两个弹出栈的方法. route, inclusive = false, saveState = false) is not necessary to save the state since once the use is out has to login again with new updated data. popBackStackImmediate(); Jan 3, 2023 · Since popBackStack and popUpTo can also work with ids of our destinations, we can clear the back stack by passing the graph’s id from the NavHostController. route val navigationOptions = NavOptions. I ran it on the emulator. destination. See full list on developer. navigateToPreviousList but once reached to the list having 3 items on pressing back button again, nothing happens. The most common case when this returns false is when you Sep 15, 2023 · But when I go on 4th screen, I am not able to go back to the 3rd screen even if I swipe Left. boolean. popUpTo(navController. 2. If you have the MenuOptions on the MainActivity layout (which I don't recommend, it should go on every fragment, so the MenuOptions are correlated to the current fragment) you can define your navigations in the nav_graph. add. Jan 28, 2023 · When working with Compose Navigation and calling NavController. Sep 26, 2022 · 4 Where do you set the ID of a fragment to be used in navigation?. popBackStack(NavigationItem. id) { saveState = true } launchSingleTop = true // We want to reset the graph if it is clicked while already selected restoreState = tab != currentTab } currentTab = tab } Jan 31, 2020 · Tapping Up or Back calls the NavController. val navController = findNavController(R. try navController. This way, we could navigate to the adopt route from But when I click the popbackstack button to FirstScreen. If this does not work, it means something else is going wrong. The problem seems to be when I use popBackStack, however I already use this in other parts of the app and it never happened. 7. From my investigation problem occurs from race condition in stack-controller. Jun 7, 2021 · I am using Jetpack Compose ui version 1. Dec 13, 2023 · NavController is a powerful tool for managing navigation in Android apps, enabling smooth transitions between screens, deep linking to specific destinations, and handling the back stack Sep 22, 2021 · but I think that you don't need to create the NavController on the main class, since this part of the la class NavigationComponent I thought this class is the one in charge to handle this one. and if false it won't be popped and others destination between current id and given id will be popped. Mar 5, 2021 · I would like to retrieve the current route as a string (FOO or BAR) using the navController. But you have to be careful when using this method. android-jetpack-compose. For example when navigating to another Composable from this point on and then calling popBackStack does not have an effect. edited Aug 11, 2018 at 5:38. popBackstack() it will maybe send that event multiple times making your entry destination as blank and you will not see anything, I tried with navigateUp and its working fine but its really annoying that the NavHost re-executes these extra May 1, 2022 · I'm trying develope single-activity application using the navigation to corresponding fragment from my home fragment under certain conditions (see my code fragment below). popBackStack() ViewModel: _isFragmentPopped. 0-alpha04. popBackStack() - if you call it on top level composable screen then it will just stay freeze with the latest frame of your composable screen, you can't exit activity (back pressed behavior) with navController. ). kt: NavHost(navController Aug 23, 2022 · This should work correctly. model. Is there any way to retrieve this value? I'm using Jetpack Compose beta01 and Compose Navigation alpha08. support. Create a NavHost() and pass a NavController and the start route. , the destinations you've put on the back stack Aug 13, 2021 · Using the newest Navigation Component with the BottomNavigationView, the NavController now saves and restores the states of tabs by default:. The FragmentManager manages the fragment back stack. nav_host_fragment); NavController navController = navHostFragment Nov 5, 2023 · The problem is that despite of authorized or not authorized, and whatever i tried - the deeplink navigation ignores the authentication and always navigates through till the details screen of the bottom menu graph. ) {. commit() Any help would be appreciated. Based on the following image, my App currently contains 2 main routes : Auth and Dashboard. navigateUp() and NavController. Using this approach onFragment() would set mock NavController too late in the lifecycle, causing the findNavController() call to fail. navigate(destination) I am using above code to pop summary screen from backstack before navigating but its not working. Phil Dukhov. findNavController(View) Nov 4, 2023 · 0. The NavController is used to perform navigation operations (such as navigate to the next screen or go back). You can navigate between composables while taking advantage of the Navigation component's infrastructure and features. In my case, it turned out that elsewhere in the codebase the backQueue of NavController was manipulated manually ( . You can pop the fragment by name. The problem is, when I obtain the NavController, it doesn't appear to have any of the backstack properties or functions. Guys I need your help. In the Fragment I then added: Mar 13, 2020 · 一つ前の状態に戻すpopBackStack()getFragmentManager(). We use NavController. But if you call FragmentTransaction. title = { Text(text = title) }, Jan 16, 2014 · But you call popBackStack() on the getFragmentManager(). When the user started the App, an observer will check whether the user is logged in and direct he/she to the Login Page/Dashboard. remove. app. homeFragment, false) and navController. popBackStack() is an option. Each set of changes is committed together as a single unit called a FragmentTransaction . id that, however, returns a numeric ID, not the route as a string. Dec 6, 2023 · ` navController. popBackStack();指定したIDの状態に戻すgetBackStackEntryAt(int … Nov 23, 2022 · 2. – Monish Kamble. The flow works like this, Route 1: Auth -> Main -> Chat -> Use action to navigate to main & set it as start method to clear the "Chat" and "Main" from the backstack. navController = navController, startDestination = SplashDestination. I am new to the android world but it makes sense to me that the NavigationComponent controls the NavController and all its interactions with it. Jan 25, 2019 · Feb 4, 2020 at 17:36. Oct 14, 2022 · In the MainActivity I use these code to navigate to the RecordActivity:. 8. "Auth" won't be in the backstack as you are using popUp in Auth to Main action. beginTransaction() ftr. setupWithNavController (toolbar, NavHostFragment. findStartDestination(). Reload to refresh your session. This code should solve the problem: boolean done = getSupportFragmentManager(). In my app there were three fragments A -> B -> C and I had to return to A from C. setupWithNavController() now automatically save and restore the state of popped destinations, enabling Sep 12, 2022 · navController. route) {// Pop up to the start destination of the graph to // avoid building up a large stack of destinations // on the back stack as users select items Apr 20, 2022 · Ok, so for me, what it was is that if you have inside a viewmodel a state lets say "PasswordResetEvent" and then you emit that to propagate a navcontroller. route != null }?. Most probably it's not related to navigation, check out if your app screen freezes with main_screen as initial destination. fragment2); Jun 14, 2023 · Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand Jul 2, 2022 · The problem is in your Activity, you call the navHost, then you call the firstRunLayout screen, so the firstRunLayout screen will be on the top of the navHost, you need to delete the call of firstRunLayout in your activity, so your code should look like this: class FirstRunActivity : ComponentActivity() {. Jan 23, 2019 · NavController functions that support routes such as navigate or popBackStack can now properly match routes filled with arguments of Array NavTypes. 18 hours ago · When using new Compose navigation that incorporates animations in NavHost by default, i encountered a few issues with navController. Nov 18, 2020 · 2. Project uses BaseViewModel class and BaseComposableScreen composable function to generalize basic communication of view and view-model. However, when I press the back button I am taking back to the settings screen. But i have problem in use it. The NavController only controls its own back stack (i. route(), **modifier = Modifier. navigateUp() in the navigation icon. As a unified approach which will work for all cases I'd suggest using first approach. popBackStack() did pop a destination off the back stack and the stack is now empty. NavController is used to navigate from one destination to another destination which can be retrieved by following one of the static methods : NavHostFragment. setOnClickListener { it. Note: Each NavHost you create has its own corresponding NavController. Ali Khorasani. Nov 15, 2019 · If i minimize app (press home button) in splash fragment then navigate() doesn't work and when i open app again it remains in splash fragment In console: NavController: Ignoring popBackStack to destination my. navigate("home") example - >. navigate(destination) { popUpTo("summary_screen") { inclusive = true } } navigator. Also, it works fine when I replace LazyColumn with Column. The problem: Feb 28, 2024 · NavController provides a few different ways to navigate to the destinations in its graph. Expected behavior: Sep 25, 2019 · So if you do not mind using RestrictedApi you can just use something like this: // Search for first route in the backstack (note that first destination does not have route). build Apr 29, 2022 · Plan and track work I/NavController: Ignoring popBackStack to destination -1229886412 as it was not found on the current back stack #4. Feb 24, 2021 · to do so you have to give your bottom navigation items an ids as same as the corresponding destination in your navigation graph , and then tie you bottom view to the controller like this : NavHostFragment navHostFragment = supportFragmentManager. There you go, now you are able to Aug 5, 2020 · doSomething() Fragment: super. Builder(). POP_BACK_STACK_INCLUSIVE); where the "myfancyname" should match the string you used with addToBackStack. Jul 4, 2018 · Basically, I have the following navigation graph: I want to change my starting point in navigation graph to fragment 2 right after reaching it (in order to prevent going back to fragment 1 when pressing back button - like with the splash screen). Aug 23, 2022 · I need a state or boolean value to understand if navcontroller. Nov 26, 2020 · NavController pop method stop working after navigating from undefined stack to named stack. Login. Also, I know we should not be using fragmentManager in Navigation Component. getGraph(); navGraph. Dec 16, 2022 · I have WebView inside the LazyColumn. I'm trying to add an OnClick for a button, that navigates to another screen, however, it isn't working. asked Aug 23, 2022 at 21:28. If you need to clear the navigation stack, you can use popBackStack as shown below: navController. March 6, 2024. Jan 3, 2024 · In this case, the user sees only a blank screen. Version 2. Both of the classes I'm working with are fragments. Now that you've defined your routes and mapped them to composables in a , it's time to navigate between screens. any_destination val navHostFragment = supportFragmentManager. fun <T> NavBackStackEntry. 5 How do I set up my NavController?. kotlin. Something like navController. answered Jun 23, 2022 at 9:10. fragmentPopped() navController. setOnItemSelectedListener(item -> { //logic like navController. id. 0-alpha04 is released. restoreState(bundle: Bundle). add, popBackStack will just call FragmentTransacetion. AdminHomeScreen. navigate(screen. popBackStack() multiple times on the first shown Composable (startDestination) the backnavigation does not work anymore. What is happening: The dark overlay appears and disappears instantly. If the back stack contains more than one instance of the specified destination, getBackStackEntry() returns the topmost instance from the stack. For some Reason the size of the BackQueue is at least 2 and if popping the backstack lower than that, navigation does not seem to work anymore. . As LiveData is for events, it redelivers the previous response when you go back to your LoginFragment. I'm trying to get the "reset" button to trigger navigation to CounterEditScreen. A basic app with a home screen and an about screen would Jan 3, 2024 · Use the FragmentManager. The TitleArea's text in FirstScreen doesn't be changed to "New User Name" and still is "Origin user Name". If I do this a second, third, fourth time, 'setplace ()' is not called immediately. The Navigation component provides support for Jetpack Compose applications. navigateUp() probably the stack has many entries, try using singleton navigation to that stack is not full of undesired entries like. Oct 4, 2021 · 7. Jul 21, 2022 · 0. For more, see Navigate to a destination. I am able to navigate using NavGraph, NavHost and NavController but the problem is, there are multiple situations where I need to move from one fragment to other fragment and vice-versa and require to clear the backstack accordingly. 3. Oct 7, 2020 · 4. While adding fragments to the back stack, just give them a name. But when I start applicat NavController is an Android Developers' class that serves as the central navigation API, tracking user-visited destinations. I would not accept this answer for want of a real solution. saveState(): Bundle and navController. setViewNavController(fab, navController) Now this would work: fab. You switched accounts on another tab or window. Mar 27, 2021 · Referencing nglauber's answer, I found I was getting repeated observations of the same result, until I switched from calling SavedStateHandle. getBackStackEntry() , passing it a destination ID. replace(R. com May 31, 2024 · When a composable function needs to navigate to a new screen, you shouldn't pass it a reference to the NavController so that it can call navigate() directly. Jun 7, 2021 · Note that this is the default behavior for popBackStack, so we could also just call navController. 6 How do I add a navigation drawer to an existing activity? Apr 25, 2022 · content = { paddingValues ->. I faced an issue with the click of the button. In my case I used popBackStack() to close the current fragment and return to the previous one, after that any attempt to navigate from A threw Navigation xxx is unknown to this NavController exception. popBackStack(Screen. setStartDestination(R. To hack around this issue one can create an action from ThirdFragment to itself and then check for navController. one way is to tag the backstack and when you want to clear it. remove and FragmentTransaction. To make it recompose you need to use Sep 13, 2021 · 2. You might want to do something like this Nov 20, 2019 · This approach won't work in case there happens an interaction with NavController up until onViewCreated() (included). xml and use them in the MainActivity through NavigationDirections object. Navigating without specifying nav options saveState and restoreState will not restore the backstack, this is a problem since most of the time back pressing shouldn't reset the backstack. It will pop the controller's back stack back to a specific destination. commit(); Step 3: After that again I added one more Fragment on Fragment_More in the same way: Aug 17, 2018 · I had the same issue. Compose. Jan 13, 2022 · But after some testing I got it to work with 2. I develop a small-scaled jetpack compose project. Oct 21, 2020 · Setting "Main" as the start destination clear the destinations below main. saveState = true. 5. From the image as you can see, I've set the NavGraph (which include all the Dashboard routes) in the Jun 7, 2021 · onClick = {navController. setupWithNavController() and NavigationView. Here is the base things: @Composable. It shows up fine. According to Unidirectional Data Flow (UDF) principles, the composable should instead expose an event that the NavController handles. NavController. This is my code: navGraph = navController. navigateBack() }, enableBackButton = viewModel. After removing the offending code, I could update my popUpTo to refer to the nested graph ID, and the backstack got navController. Jun 23, 2022 · A: Because nav controller add tags to all views when created with weak reference to itself, so when you add view programmatically and not attached to parent, findNavController won't be able to get your root view and thus won't be able to find its weak reference. value = true. override fun handleOnBackPressed() {navController. GetOnceResult(resultKey: String, onResult: (T) -> Unit) {. May 1, 2021 · I'll try to do some ASCII art to describe the problem: <-----\ DestinationA --> DestinationC -----> DestinationE DestinationB -----/ \-----> DestinationD --/ Dec 23, 2016 · 1. attach(this). findNavController(Fragment) Navigation. padding(paddingValues = paddingValues),**. popBackStack() findNavController(). ElevatedButton( onClick = { mContext. Aug 11, 2020 · I am working on a Project that uses Single Activity Multiple Fragments. Sep 12, 2021 · navController. navigate(tab. OnDestinationChangedListener and the provided parameter NavDestination to hide/show the bottom navigation bar (which is anchored in the root activity) depending on the current destination. findNavController (nav_host)) Basically, In my understanding just bt providing id of the correct fragment for the menu item and calling setupWithNavController should work, but that assumption was not Oct 27, 2023 · I used setStartDestination via code, but when call popBackStack(), there was no action. startActivity(Intent(mContext, RecordActivity::class Jun 14, 2013 · 17. mFragmentManager. After login success I need to clear all Dec 30, 2022 · In addition, if we want the system back navigation to work as same as the toolbar back button, then that could be implemented by changing one line of code as shown below. The closest alternative I can find is navController. FragmentManager you also have to call popBackStack() on the same FragmentManager. I think the problem is because it didn't make FirstScreen recomposition. addComposableDestinations(navController) I think it's to do with changing the paddingValue value. From the settings tab, the user can then logout of the application. and. As part of this change, the NavigationUI methods of onNavDestinationSelected(), BottomNavigationView. popBackStack("myfancyname", FragmentManager. onCreate() var fragmentX = model. calling navigate(R. replace will not change your fragment state. At runtime, the FragmentManager can perform back stack operations like adding or removing fragments in response to user interactions. popBackStack()} May 6, 2014 · If you use FragmentTransaction. If you are adding the Fragments to the android. TopAppBar(. androidx. route) { popUpTo(navController. I'm trying to do it slowly using fadeIn () and fadeOut (). currentBackStack. clear()) was called. navigate(R. Oct 2, 2021 · The navigation you are referring to shows how to clear the stack when navigating to a specific destination. graph. popBackStack() Attempts to pop the controller's back stack. 'setplace ()' is then only called when I navigate back to SearchPlaceDialog. v4. For more details look at the documentation here . fragmentTransaction. I'm calling NavController. popBackStack () to go back to a previous fragment in an app. Fragment fancyFragment = new FancyFragment(); Aug 29, 2023 · I am trying to handle this using navcontroller. The thing is when I try to navigate back by calling navController. Let me explain what's happening with more detail: From FragmentA I open FragmentB by calling this in the onClick method of a button: Jul 28, 2021 · As @James Christian Kaguo already said navController. firstOrNull { it. isFragmentXPopped. The NavController provides access to the NavHost's graph. It actually navigates back, but it seems a new instance of the previous fragment is created instead of reusing the previous one. and true for Whether the given destination should also be popped. New Features Jun 1, 2017 · 147. app/homeFragment as it was not found on the current back stack FragmentNavigator: Ignoring navigate() call: FragmentManager has already Jun 27, 2018 · Check currentDestination before calling navigate might be helpful. . addToBackStack("fragC"); Then in Fragment_C, pop the back stack using the name ie. This change must be implemented for each container fragment’s onBackPressedCallback. clearAllSavedStates() would be a dream. navigation:navigation-*:2. beginTransaction(). popBackStack(R. val ftr: FragmentTransaction = requireFragmentManager(). currentDestination when navigate is called. navigate(item Aug 9, 2018 · I found a somewhat workaround though I wouldn't call it a solution. Furthermore, I've used some base class/function designs for this project. Jun 19, 2023 · I'm having a problem while running my app, but I'm not understanding why. You can pass your NavController to your TopAppBar and use navController. Seems like saveState work greate (i see bundle, and backstack inside), but i dont Apr 1, 2022 · First approach would be to not use FragmentTransactions when you using NavComponent. It will be taken care by the Activity hosting the fragments. popBackStack seems to create a new fragment instance. In the next section, you'll make your app change routes and navigate between screens when the user taps each of the buttons. NavHost(. android. Dec 23, 2016 at 9:19. us wi uo zy mu tb bi ht kf gm