bottomnavigationview

问题 I am new to android and I am trying to make an app with more than 3 elements in the bottom navigation bar. I am able to display them but they are getting clustered at the end and only three are visible properly. Here is my code: <android.support.design.widget.BottomNavigationView android:id="@+id/bottomNavigation" android:layout_width="wrap_content" android:layout_height="wrap_content" android:elevation="15dp" android:layout_gravity="bottom" android:layout_alignParentBottom="true" app:menu="

问题 I am new to android and I am trying to make an app with more than 3 elements in the bottom navigation bar. I am able to display them but they are getting clustered at the end and only three are visible properly. Here is my code: <android.support.design.widget.BottomNavigationView android:id="@+id/bottomNavigation" android:layout_width="wrap_content" android:layout_height="wrap_content" android:elevation="15dp" android:layout_gravity="bottom" android:layout_alignParentBottom="true" app:menu="

问题 I have a bottomnavigationview containing 5 fragments,(Consider A(Home), B, C, D, E) If I go to fragment D and then an Activity (Which is inside fragment D or C or any of 5) and press back button of the device. It is directly going to Home fragment(A), actually, it should go to fragment D or C. I have used botomnavigationview in my previous project but all things were working fine. Happening-- MainActivity+HomeFragment (A)---> Fragment D-->>Activity--->>OnbackPressed--->>HomeFragment Expected-

问题 I have a large number of fragments. Here the BottomNavigationView has only four icons for tabs. But each tabs has multiple fragments. For Example: I am in home feed screen defaulty. I have a menu item. Clicks on profile label and moved to profile section. Here it needs to highlight the profile icon. How it can be done without click on the BottomNavigationBar in android. 来源： https://stackoverflow.com/questions/64986344/clarification-how-can-i-show-the-bottomnavigationview-tab-is-highlighted-if

问题 I am trying to replicate a behavior that the current Google Maps has which allows the bottom sheet to be revealed when sliding up from the bottom bar. Notice in the recording below that I first tap on one of the buttons at the bottom bar and then slide up, which in turn reveals the sheet behind it. I cannot find anywhere explained how something like this can be achieved. I tried exploring the BottomSheetBehavior and customizing it, but nowhere I can find a way to track the initial tap and

问题 When user in not authenticate, it goes to Login fragment, if he's authenticate it goes to home fragment. When unauthenticated user open the app, the bottomNavView should be hidden, it is but it leaves a blank space. class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val navigationController = findNavController(R.id.nav_host_fragment) val bottomNavigationView = findViewById

问题 I'm adding a BottomNavigationView to a project, and I would like to have a different background color for each bottom tab.Using a different color with android:state_selected="true" in a color selector resource file doesn't seem to work.I also tried to entered more things like android:state_focused="true" or android:state_enabled="true", no effect unfortunately. (BottomnavigationView) <android.support.design.widget.BottomNavigationView android:id="@+id/bottomNavigationView" android:layout

问题 I have a navigation_bar.dart file that handles changing to new pages within my app. Within it, I am using the bottomNavigationBar to build out four different pages based on what tab is currently selected like so: class NavigationBar extends StatefulWidget { @override _NavigationBarState createState() => _NavigationBarState(); } class _NavigationBarState extends State<NavigationBar> { int _selectedIndex = 0; final List<Widget> _pageOptions = <Widget>[ Page1(), Page2(), Page3(), Page4(), ];

问题 Adding dynamic feature using a navigation graph like the one below and works fine with viewPager2, or another fragment, but not with a BottomNavigationView . Layout <?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> <FrameLayout android:id="@+id/nav_host_container

问题 Adding dynamic feature using a navigation graph like the one below and works fine with viewPager2, or another fragment, but not with a BottomNavigationView . Layout <?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> <FrameLayout android:id="@+id/nav_host_container