I am trying to implement Jetpack Navigation with the new Android Bottom App Bar in my main activity but it is not working as it should be.
I've read the notes on navigation and doesn't seem to find any way to integrate navigation jetpack into the new bottom app bar. I've tried to do it my way as follows:
I am using an Activity with 4 fragments inside to navigate within the Bottom App Bar's Navigation Drawer.
The expected output should be when i click on this:
it should open a drawer like this:
And i should be able to navigate between fragments.
However, when i use the following codes below
activity_home.xml
<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">
<fragment
android:id="@+id/myNavHostFragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:navGraph="@navigation/bottomappbar_navigation" />
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.bottomappbar.BottomAppBar
android:id="@+id/bottom_app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:fabAlignmentMode="center"
app:navigationIcon="@drawable/ic_menu_dark"
app:menu="@menu/bottomappbar_main_menu"/>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_add_black"
android:backgroundTint="@color/colorAccent"
app:layout_anchor="@id/bottom_app_bar"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
The Navigation File is:
bottomappbar_navigation.xml
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/bottomappbar_navigation" app:startDestination="@id/fragmentGoals">
<fragment
android:id="@+id/fragmentGoals"
android:name="com.th3pl4gu3.lifestyle.ui.FragmentGoals"
android:label="FragmentGoals"/>
<fragment
android:id="@+id/fragmentToDo"
android:name="com.th3pl4gu3.lifestyle.ui.FragmentToDo"
android:label="FragmentToDo"/>
<fragment
android:id="@+id/fragmentToBuy"
android:name="com.th3pl4gu3.lifestyle.ui.FragmentToBuy"
android:label="FragmentToBuy"/>
<fragment
android:id="@+id/fragmentStatistics"
android:name="com.th3pl4gu3.lifestyle.ui.FragmentStatistics"
android:label="FragmentStatistics"/>
</navigation>
bottomappbar_drawer_menu.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<group android:checkableBehavior="single">
<item
android:id="@+id/fragmentGoals"
android:icon="@drawable/ic_add_black"
android:title="Goals"/>
<item
android:id="@+id/fragmentToDo"
android:icon="@drawable/ic_add_black"
android:title="To Do"/>
<item
android:id="@+id/fragmentToBuy"
android:icon="@drawable/ic_add_black"
android:title="To Buy"/>
<item
android:id="@+id/fragmentStatistics"
android:icon="@drawable/ic_add_black"
android:title="Statistics"/>
</group>
</menu>
bottomappbar_main_menu.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
<item android:id="@+id/search"
android:title="Search"
android:icon="@drawable/ic_search_black"
app:showAsAction="always"
android:tooltipText="Search" />
</menu>
Then inside my ActivityHome.kt:
class ActivityHome : AppCompatActivity() {
private lateinit var mBinding: ActivityHomeBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
mBinding = DataBindingUtil.setContentView(this, R.layout.activity_home)
setSupportActionBar(mBinding.bottomAppBar)
val navController = Navigation.findNavController(this, R.id.myNavHostFragment)
mBinding.bottomAppBar.setupWithNavController(navController)
mBinding.bottomAppBar.setOnMenuItemClickListener { menuItem ->
menuItem.onNavDestinationSelected(navController)
}
}
override fun onCreateOptionsMenu(menu: Menu?): Boolean {
val inflater = menuInflater
inflater.inflate(R.menu.bottomappbar_main_menu, menu)
return true
}
override fun onOptionsItemSelected(item: MenuItem?): Boolean {
when(item?.itemId){
R.id.search -> {Toast.makeText(this, "Search clicked!", Toast.LENGTH_SHORT).show()}
}
return true
}
}
What happens is that the menu icon disappears on the Bottom App Bar as show here:
I think i am not using the Jetpack Navigation correctly.
Can you please help by giving a link or some code on how to make this work?
Change your activity and layout as below
MainActivity
class MainActivity : AppCompatActivity() {
private lateinit var mBinding: ActivityHomeBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
mBinding = DataBindingUtil.setContentView(this, R.layout.activity_home)
val navController = Navigation.findNavController(this, R.id.navFragment)
mBinding.navigationView.setupWithNavController(navController)
setSupportActionBar(mBinding.bottomAppBar)
if (mBinding.navigationView.isShown) {
mBinding.navigationView.visibility = View.VISIBLE
} else {
mBinding.navigationView.visibility = View.GONE
}
}
override fun onCreateOptionsMenu(menu: Menu?): Boolean {
val inflater = menuInflater
inflater.inflate(R.menu.bottomappbar_main_menu, menu)
return true
}
override fun onOptionsItemSelected(item: MenuItem?): Boolean {
when(item?.itemId){
android.R.id.home -> {
Log.e("TAG", "Visbility>>>> ${mBinding.navigationView.isShown}")
if (!mBinding.navigationView.isShown) {
mBinding.navigationView.visibility = View.VISIBLE
} else {
mBinding.navigationView.visibility = View.GONE
}
}
R.id.search -> {
Toast.makeText(this, "Search clicked!", Toast.LENGTH_SHORT).show()
}
}
return true
}
}
activity_home.xml
<layout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="@+id/navFragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:navGraph="@navigation/nav_graph"
android:layout_marginBottom="60dp"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
<com.google.android.material.bottomappbar.BottomAppBar
android:id="@+id/bottom_app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:fabAlignmentMode="center"
style="@style/Widget.MaterialComponents.BottomAppBar"
app:menu="@menu/bottomappbar_main_menu"
android:backgroundTint="@color/colorPrimaryDark"
app:navigationIcon="@drawable/ic_menu_dark"/>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_add_black"
android:backgroundTint="@color/colorAccent"
app:layout_anchor="@id/bottom_app_bar"/>
<com.google.android.material.navigation.NavigationView
android:id="@+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_anchor="@id/bottom_app_bar"
android:background="@android:color/white"
android:layout_gravity="start"
app:menu="@menu/bottomappbar_drawer_menu"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
</RelativeLayout>
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