android-navigation

问题 Information: I'm programmatically inserting a NavHostFragment for each feature of the app. Each NavHostFragment has it's own Navigation Graph. Dagger is providing them by using a FragmentFactory specific to each feature. It's a Single Activity structure with MVVM architecture. Repo: https://github.com/mitchtabian/DaggerMultiFeature/tree/nav-component-backstack-bug checkout the branch "nav-component-backstack-bug". The Problem When navigating into the graph the fragments are not being added to

问题 The first item in the navigation bar keep highlighting. When I click other item on the navigation bar, the content will change but the corresponding item will not be highlighted, just keep highlighting the first item. bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(@NonNull MenuItem item) { Fragment fragment=null; switch (item.getItemId()){ case R.id.number: fragment=new

问题 I am actually not sure, how the correct way or the best practice to set different toolbar using navigation controller component in my app. I want to set 2 different toolbars. green toolbar red toolbar two toolbars with different colour. this is just to simplify the case, actually I have multiple toolbars I am using navigation controller component. and currently on my Main Activity as the host, I set the green toolbar in my main activity using this code setSupportActionBar(green_toolbar)

问题 I use navigation library and safeargs for passing data. I define argument to fragment like that. <fragment android:id="@+id/otherFragment" android:name="com.asd.navigate.OtherFragment" android:label="OtherFragment"> <argument android:name="screenTitle" android:defaultValue="0" app:type="string" /> </fragment> OtherFragmentArgs generated, I can use it but OtherFragmentDirection class doesnt generate when I click "make project". Is that bug or I have to do something different. Thnx for advice.

问题 Expected Create bottom app bar navigation using Navigation UI's BottomNavigationView and FragmentContainerView similar to the sample app NavigationAdavancedSample . Note, NavigationAndvancedSample app does not appear to use the same implementation as described in the documentation as it has a workaround implementation using the custom extension method setupWithNavController . Observed Null NavHostFragment when creating the BottomNavigationView in the MainActivity.kt with a

问题 Expected Create bottom app bar navigation using Navigation UI's BottomNavigationView and FragmentContainerView similar to the sample app NavigationAdavancedSample . Note, NavigationAndvancedSample app does not appear to use the same implementation as described in the documentation as it has a workaround implementation using the custom extension method setupWithNavController . Observed Null NavHostFragment when creating the BottomNavigationView in the MainActivity.kt with a

问题 Take for example the app I'm currently working on: - it has an navigationDrawer with multiple items; there are two items which interest me for now, i'll call them X and Y. both X and Y, when clicked on, display a fragment containing a list of x-elements or y-elements selecting and x or y list element displays a new fragment in which I display info about the select item; the view fragments are different for x and y elements in the view fragment I can choose to edit the specific element which

问题 I'm struggle building a Navigation, like on the image below, with the Android Navigation Component. I need a "Login Flow", check if the user is logged in and then navigate to the main part of the app (also clearing the backstack). The main part contains a BottomNavigationView with three tabs. But if I click on a settings icon on the toolbar, I also want to display a fullscreen SettingsFragment. Did I need two NavHostFragments with separate navigation graphs? If yes, how can I combine them and

问题 I would like to change up button icon in ActionBar that is working with Navigation Component. I've tried several options like: supportActionBar?.setHomeAsUpIndicator(R.drawable.ic_arrow_left_blue_24dp) in MainAcitivty or app:navigationIcon="@drawable/ic_arrow_left_blue_24dp" in Toolbar .xml file and nothing seems to work. I have a pretty standard setup with setSupportActionBar(appToolbar.toolbar) setupActionBarWithNavController(this, navController) called in MainActivity:onCreate method. I

问题 say I have 2 fragments. Login and Home. I set Home fragment as a global destination that has userData as arguments if the user is not logged in yet, then it will start from login fragment. after login and get userData from server then it will navigate to Home and pass userData using this code val home = AuthenticationFragmentDirections.actionGlobalHomeFragment(userData) Navigation.findNavController(view).navigate(home, navOptions) but the problem is when the user already login and open the