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android – Bottom Navigation View highlight selected item

Posted by: admin June 15, 2020 Leave a comment

Questions:

I have added Bottom Navigation View to my activity XMl. I am unable to set the default checked item from the menu items. It always sets the first menu item as default. Also when I tap on other menu items the selected menu item is not hightlighted. If I programmatically set the item.setChecked(true) then the menu option gets highlighted but the first menu item is also highlighted. I am using

 compile 'com.android.support:design:25.0.1'

Here is the bottom Navigation view

<android.support.design.widget.BottomNavigationView
    android:id="@+id/bottom_navigation"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:itemBackground="@color/white"
    app:itemTextColor="@color/black"
    app:menu="@menu/navigation_menu">
</android.support.design.widget.BottomNavigationView>

Here is the menu

 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto">

<item
    android:id="@+id/action_wallet"
    android:enabled="true"
    android:icon="@drawable/ic_account_balance_wallet_black_24dp"
    android:title="wallet"
    app:showAsAction="ifRoom"
    />
<item
    android:id="@+id/action_card"
    android:enabled="true"
    android:title="allowance"
    android:icon="@drawable/ic_credit_card_black_24dp"
    app:showAsAction="ifRoom"
    />

<item
    android:id="@+id/action_transaction"
    android:enabled="true"
    android:icon="@drawable/ic_description_black_24dp"
    android:title="transaction"
    app:showAsAction="ifRoom" />

</menu>

Bottom Navigation View
Has anyone encountered this situation? Any Suggestions on how to handle this?

Thanks,
Priya

How to&Answers:

Add a selector.xml in drawable folder for example my xml is

navbar_color.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true"
         android:color="highlight color" />
   <item android:color="normal color"  />
</selector>

Then add following in lines BottomNavigationView

app:itemIconTint="@drawable/selector"
app:itemTextColor="@drawable/selector"

Answer:

I was not returning true from OnNavigationItemSelectedListener thats why I was facing the issue. After returning true from OnNavigationItemSelectedListener the issue got resolved. Thanks user2650128 for pointing in that direction.