bottomnavigationview

问题 I am newbie in android, i am use bottom navigation view with two menus but im getting left right space Here is my Navigation View, <android.support.design.widget.BottomNavigationView android:id="@+id/bottom_navigation" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" app:itemBackground="@color/colorRed" app:itemIconTint="@color/colorWhite" app:itemTextColor="@color/colorWhite" app:menu="@menu/bottom_bar_menu"/> Please check Image

问题 I am newbie in android, i am use bottom navigation view with two menus but im getting left right space Here is my Navigation View, <android.support.design.widget.BottomNavigationView android:id="@+id/bottom_navigation" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" app:itemBackground="@color/colorRed" app:itemIconTint="@color/colorWhite" app:itemTextColor="@color/colorWhite" app:menu="@menu/bottom_bar_menu"/> Please check Image

问题 I have bottom navigation bar with center item that looks like on this picture: How to implement such a thing in Flutter? I found that every icon that I put into BottomNavigatonBarItem is fitted inside navigation bar's bounds. But I need it to be hanged out above. 回答1: You can a Stack to display widgets on the top of each others. Combined with the property overflow : Overflow.visible , and an alignment that fits your need. The following example will achieve thing as in your picture : A

问题 I have bottom navigation bar with center item that looks like on this picture: How to implement such a thing in Flutter? I found that every icon that I put into BottomNavigatonBarItem is fitted inside navigation bar's bounds. But I need it to be hanged out above. 回答1: You can a Stack to display widgets on the top of each others. Combined with the property overflow : Overflow.visible , and an alignment that fits your need. The following example will achieve thing as in your picture : A

问题 Prior to this question, i implemented the HideBottomViewOnScrollBehaviour to the BottomNavVew , and onDestinationChangedListener in each fragment to control the visiblity of the BottomNavView Bug : when i scroll-down and the BottomNavView collapse/hide in FragmentA and i try navigating to the FragmentB , the BottomNavView remains hidden, but if i scroll-up justt for the BNV to re-appear and try switching to the same fragment, the BNV becomes visible, can anyone help with an explanation...?

问题 I have bottom navigation bar on click of item in navigation bar i am replacing fragments. I have 3 fragments A,B,C so on click of b item B fragment is loaded and in B i am calling 3-4 APIs. So now if i go to C and then again come to B a new instance of B Fragment is created and again those APIs are called how can i save the fragment instance state and not call APIs again while changing fragments. This is my code. mBottomNavigationView.setOnNavigationItemSelectedListener(new

问题 I'm writing an app using BottomNavigationView and Fragment for updating the layout programmatically. I'm trying to use a Stack to allow the user to click back and return to the previous fragment. I had tried to use addToBackStack after inflating a new fragment but when back is pressed despite the layout is changing correctly the selected item menu does not change with it. So I decided to create a custom stack of Fragment and change with setSelectedItemId the selected item but this operation

问题 I have bottom Navigation also I'm replacing the <fragment> tag with FragmentContainerView it gives me error about does not have a NavController set on, then i was posted this question and fixed the problem, but I got this below error when orientation is changed and selecting item in Bottom Navigation java.lang.IllegalStateException: You must call setGraph() before calling getGraph() FragmentContainer <androidx.fragment.app.FragmentContainerView android:id="@+id/nav_host_fragment" android:name

问题 I am attempting to match a design like this.. Notice that the "selected tab color tint" is a blue, but the center tab's icon should always be the green circle with the white clock in the middle. I've tried a number of things. First trying to do it programmatically by using a layer-list XML resource that had the green circle and clock PNG resource, which didn't work at all. Then I just got the designer to give me the full icon(clock and green circle), but now I'm running into this issue..

问题 I am attempting to match a design like this.. Notice that the "selected tab color tint" is a blue, but the center tab's icon should always be the green circle with the white clock in the middle. I've tried a number of things. First trying to do it programmatically by using a layer-list XML resource that had the green circle and clock PNG resource, which didn't work at all. Then I just got the designer to give me the full icon(clock and green circle), but now I'm running into this issue..