Develop Reference

add version of app at bottom navigation view is not displayed properly

As a lot of people are probably trying to do it, I am trying to add a footer to a navigation view. I did this:
<com.google.android.material.navigation.NavigationView
android:id="#+id/navigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#color/background"
android:clipToPadding="true"
app:headerLayout="#layout/layout_nav_header"
app:menu="#menu/navigation_menu">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginBottom="24dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:gravity="left"
android:text="#string/appVersion"/>
<TextView
android:id="#+id/buildInfoTv"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
</com.google.android.material.navigation.NavigationView>
This working fine but not in 2 cases: small screen because the linearlayout overlap the menu and also if the keyboard is popped up, it move the layout.
Any idea how to make sure that the linear layout with the app version stick to the bottom of the navigation or also below the menu item so it's not overlapping on small screen.
Thanks

Try this once
Note change widget values and parameters as per your requirements.
OPTION 1-
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.google.android.material.navigation.NavigationView
android:id="#+id/navigationView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:headerLayout="#layout/content_main"
app:layout_constraintBottom_toTopOf="#+id/linearLayout"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:menu="#menu/menu_main" />
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="25dp"
android:orientation="horizontal"
android:padding="10dp"
android:weightSum="1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:gravity="start|center"
android:text="#string/app_name" />
<TextView
android:id="#+id/buildInfoTv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:gravity="start|center"
android:text="#string/app_name" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
OPTION 2-
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="#+id/linear"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.navigation.NavigationView
android:id="#+id/navigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:headerLayout="#layout/content_main"
app:menu="#menu/menu_main" />
</androidx.core.widget.NestedScrollView>
<LinearLayout
android:id="#+id/linear"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="25dp"
android:orientation="horizontal"
android:padding="10dp"
android:weightSum="1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:gravity="start|center"
android:text="#string/app_name" />
<TextView
android:id="#+id/buildInfoTv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:gravity="start|center"
android:text="#string/app_name" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

Should I use ScrollView or RecyclerView for scrolling in fragment?

I have a question about my Android app. I have a fragment in which I want to scroll. Should I use the ScrollView in the fragment or in the main activity (the fragment is used for navigation in toolbar)?
Also, should I use ScrollView or RecyclerView? Here is what I tried so far, but it didn't work.
This is the main activity xml, where I added the ScrollView.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:isScrollContainer="false">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context=".MainActivity">
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#id/bottomAppBar" />
<com.google.android.material.bottomappbar.BottomAppBar
android:id="#+id/bottomAppBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:backgroundTint="#color/green_700"
app:fabAlignmentMode="center"
app:fabCradleMargin="10dp"
app:fabCradleRoundedCornerRadius="30dp"
app:fabCradleVerticalOffset="10dp"
app:contentInsetStart="0dp">
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bottomNavigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:itemIconTint="#color/light_grey"
app:itemTextColor="#color/light_grey"
app:itemTextAppearanceActive="#font/josefin_sans_semibold"
android:background="#drawable/background_transparent"
app:menu="#menu/bottom_navigation_menu" />
</com.google.android.material.bottomappbar.BottomAppBar>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="onPressFab"
android:src="#drawable/ic_add"
app:layout_anchor="#id/bottomAppBar" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
</ScrollView>
And this is the fragment where I need scrolling. It is the home fragment from toolbar.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:isScrollContainer="false">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:id="#+id/myCoordinatorLayout"
android:layout_width="match_parent"
android:layout_height="160dp"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
app:layout_constraintTop_toTopOf="parent">
</androidx.coordinatorlayout.widget.CoordinatorLayout>
<com.google.android.material.card.MaterialCardView
android:id="#+id/cardView"
android:layout_width="match_parent"
android:layout_height="100dp"
app:cardBackgroundColor="#color/green_700"
app:cardElevation="40dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.428"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:shapeAppearanceOverlay="#style/ShapeAppearanceOverlay.MaterialCardView.Cut">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/relative"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/search_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="30dp"
android:layout_marginRight="30dp"
android:background="#drawable/search_outline"
android:fontFamily="#font/josefin_sans_semibold"
android:hint="Search Barcode"
android:inputType="text"
android:maxLines="1"
android:paddingLeft="30dp"
android:paddingTop="10dp"
android:paddingRight="30dp"
android:paddingBottom="10dp"
android:textColor="#color/dark_grey"
android:textColorHint="#color/grey_200"
android:textSize="18sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.183"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/sbutton"
android:layout_width="90dp"
android:layout_height="60dp"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginTop="16dp"
android:background="#drawable/background_transparent"
android:drawableLeft="#drawable/search_button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.card.MaterialCardView>
<ImageView
android:id="#+id/imageView4"
android:layout_width="450dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_marginEnd="64dp"
android:layout_marginRight="64dp"
android:src="#drawable/home_image"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView3"
android:layout_width="208dp"
android:layout_height="138dp"
android:layout_marginTop="120dp"
android:layout_marginEnd="4dp"
android:layout_marginRight="4dp"
android:gravity="center"
android:text="Welcome back!"
android:textColor="#color/darker_grey"
android:textSize="40sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/myCoordinatorLayout" />
<androidx.viewpager.widget.ViewPager
android:id="#+id/viewPager"
android:layout_width="300dp"
android:layout_height="200dp"
android:layout_marginTop="340dp"
android:clipToPadding="false"
android:foregroundGravity="center"
android:overScrollMode="never"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.16"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/myCoordinatorLayout">
</androidx.viewpager.widget.ViewPager>
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
I would be grateful if you have any suggestions. Thank you!

RecyclerView is used to make lists.
Try put yout fragment code inside a ScrollView and remove it from your activity.

steady distance between LinearLayout items and recyclerview

I'm looking for a way to make the LinearLayout containing two buttons be steady compared to the recyclerview. In particular i'm trying to place it like this but with one more button .
Here is my xml code:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.a.TSport">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:layout_editor_absoluteX="-26dp"
tools:layout_editor_absoluteY="338dp">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</com.google.android.material.appbar.AppBarLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:padding="4dp"
android:scrollbars="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.078" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:text="Button" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/floatingActionButton"
android:layout_width="56dp"
android:layout_height="62dp"
android:layout_gravity="right"
android:layout_marginLeft="200dp"
android:clickable="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.929"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.942"
app:srcCompat="#drawable/ic_add_black_24dp" />
</LinearLayout>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
The problem comes when i have two buttons and i add some items : for each added item the linearlayout containing two buttons moves down until it disappear.

first, remove LinearLaypit and use ConstraintLayout.
it's easy
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary" />
</com.google.android.material.appbar.AppBarLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:padding="4dp"
android:scrollbars="vertical"
app:layout_constraintBottom_toTopOf="#+id/button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintVertical_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/appBarLayout" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_margin="16dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/floatingActionButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_margin="16dp"
android:clickable="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:srcCompat="#drawable/ic_launcher_background" />
</androidx.constraintlayout.widget.ConstraintLayout>
but only LinearLayout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_height="match_parent"
android:layout_width="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android"
android:weightSum="10">
<com.google.android.material.appbar.AppBarLayout
android:layout_weight="0.75"
android:layout_height="0dp"
android:layout_width="match_parent" >
<androidx.appcompat.widget.Toolbar
android:background="?attr/colorPrimary"
android:id="#+id/toolbar"
android:layout_height="?attr/actionBarSize"
android:layout_width="match_parent" />
</com.google.android.material.appbar.AppBarLayout>
<androidx.recyclerview.widget.RecyclerView
android:layout_weight="8.25"
android:background="#android:color/transparent"
android:id="#+id/recyclerView"
android:layout_height="0dp"
android:layout_width="match_parent"
android:padding="4dp"
android:scrollbars="vertical" />
<LinearLayout
android:layout_weight="1"
android:layout_height="0dp"
android:layout_width="match_parent"
android:weightSum="10"
android:orientation="horizontal">
<Button
android:id="#+id/button"
android:layout_gravity="left"
android:layout_weight="3"
android:layout_height="wrap_content"
android:layout_width="0dp"
android:text="Button" />
<View
android:layout_width="0dp"
android:layout_weight="5"
android:layout_height="10dp"/>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:clickable="true"
android:id="#+id/floatingActionButton"
android:layout_gravity="right"
android:layout_height="62dp"
android:layout_width="0dp"
android:layout_weight="2"/>
</LinearLayout>
</LinearLayout>

If you want to place both buttons at bottom than you have to make 2 changes
First you need to add android:layout_weight="1" and second replace android:layout_height="wrap_content" with android:layout_height="0dp" for your RecyclerView. This will give full size to your recyclerview until bottom views are visible.
You complete recyclerview should look like this:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#android:color/transparent"
android:padding="4dp"
android:scrollbars="vertical"
/>
NOTE: Here from RecyclerView I have removed constraint, because its parent is LinearLayout, so need to use constraint here.
OPTIONAL: Also I notice that you have used ConstraintLayout and it has only 1 child LinearLayout and also LinearLayout has not any constraint given, So if ConstraintLayout has not required you should remove it and only use LinearLayout as parent.

Arrange a BottomNavigationView, a FAB, and a FrameLayout in a CoordinatorLayout and make it work with Snackbar

I want to place a FrameLayout for hosting Fragments, a BottomNavigationView and a FAB inside a CoordinatorLayout. I would like to display a Snackbar over the BottomNavigationView and FAB to move up and down to accommodate the Snackbar. I have come up with the following layout but I am unable to get Snackbar and FAB behavior correctly.
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".landingpage.MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</com.google.android.material.appbar.AppBarLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/content_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<FrameLayout
android:id="#+id/fragment_cont"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="#id/bottom_navigation"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:menu="#menu/bottom_main_activity_menu" />
</androidx.constraintlayout.widget.ConstraintLayout>
<com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
android:id="#+id/extended_fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginEnd="16dp"
android:layout_marginBottom="72dp"
android:contentDescription="#string/cont_desc"
android:text="#string/chat"
app:icon="#drawable/ic_baseline_chat_24" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
If I set LayoutParams like in this post then that margin 72dp margin is also displayed throwing FAB way up in the layout. If I don't use the margin the FAB will be stacked over the BottomNavigationView. I can use addCallback to set FAB margins programattically. Then also it will jump and then align itself to the right position. Overall it is not a good experience UX wise.

I would like to display a Snackbar over the BottomNavigationView
and FAB to move up and down to accommodate the Snackbar. I have come
up with the following layout but I am unable to get Snackbar and FAB
behavior correctly.
You get a bad behavior because you're trying to achieve something which is not common or maybe, not implemented this way by using BottomNavigationView and FAB together. It's actually more common to use FAB & BottomAppBar at the bottom of a layout.
Then also it will jump and then align itself to the right position.
Overall it is not a good experience UX wise.
Although it's not a good experience for users from a UX view, however, here are the approaches I may suggest:
Best approach : Using another CoordinatorLayout inside LinearLayout (Supported the FAB animation):
Code:
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:title="Test" />
</com.google.android.material.appbar.AppBarLayout>
<androidx.core.widget.NestedScrollView
android:id="#+id/content_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<FrameLayout
android:id="#+id/fragment_cont"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</androidx.core.widget.NestedScrollView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:id="#+id/SnackBar"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
android:id="#+id/extended_fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="16dp"
android:text="Chat"
android:textColor="#color/white"
app:icon="#drawable/ic_baseline_send_24"
app:iconTint="#color/white" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:layout_insetEdge="bottom"
app:menu="#menu/escrow_menu" />
</LinearLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
And in Kotlin side:
extended_fab.setOnClickListener {
val snack: Snackbar = Snackbar.make(SnackBar, " Successfully ...!", Snackbar.LENGTH_SHORT)
snack.show()
}
2. BottomAppBar & FAB & setAnchorView() method without FAB animation
Anchored to FAB
Code:
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<androidx.core.widget.NestedScrollView
android:id="#+id/content_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<!-- your FrameLayout maybe -->
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center"
android:text="SHOW SnakeBar"
app:layout_anchor="#+id/content_layout"
app:layout_anchorGravity="center" />
</androidx.core.widget.NestedScrollView>
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:title="Test" />
</com.google.android.material.appbar.AppBarLayout>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
app:layout_anchor="#id/bar" />
<com.google.android.material.bottomappbar.BottomAppBar
android:id="#+id/bar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
android:backgroundTint="#color/colorPrimaryDark">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="?android:attr/selectableItemBackground"
android:drawableTop="#drawable/ic_baseline_send_24"
android:gravity="center"
android:orientation="vertical"
android:text="Personal"
android:textColor="#FFFFFF">
</TextView>
<TextView
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="?android:attr/selectableItemBackground"
android:drawableTop="#drawable/ic_baseline_send_24"
android:gravity="center"
android:orientation="vertical"
android:text="Personal"
android:textColor="#FFFFFF">
</TextView>
<TextView
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="?android:attr/selectableItemBackground"
android:drawableTop="#drawable/ic_baseline_send_24"
android:gravity="center"
android:orientation="vertical"
android:textColor="#FFFFFF"
android:visibility="invisible">
</TextView>
<TextView
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="?android:attr/selectableItemBackground"
android:drawableTop="#drawable/ic_baseline_send_24"
android:gravity="center"
android:orientation="vertical"
android:text="Personal"
android:textColor="#FFFFFF">
</TextView>
<TextView
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="?android:attr/selectableItemBackground"
android:drawableTop="#drawable/ic_baseline_send_24"
android:gravity="center"
android:orientation="vertical"
android:text="Personal"
android:textColor="#FFFFFF">
</TextView>
</LinearLayout>
</com.google.android.material.bottomappbar.BottomAppBar>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
3. Using FAB - BottomNavigationView - ConstraintLayout without FAB animation
Code:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/floating_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:layout_margin="16dp"
app:backgroundTint="#color/colorPrimary"
app:elevation="10dp"
app:layout_constraintBottom_toTopOf="#id/navigation"
app:layout_constraintLeft_toRightOf="#id/navigation"
app:layout_constraintRight_toLeftOf="#id/navigation"
app:layout_constraintTop_toBottomOf="#id/navigation"
app:layout_constraintTop_toTopOf="#id/navigation"
app:layout_insetEdge="bottom" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/navigation"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#color/colorPrimaryDark"
android:visibility="visible"
app:itemIconTint="#color/white"
app:itemTextColor="#color/white"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:menu="#menu/escrow_menu" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="290dp"
android:layout_marginBottom="485dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

Android layouts: how to put logo over border of two elements?

I make my Android app. Client’s requirement is to put logo to the bottom toolbar. The problem is that logo should be placed half over the bottom toolbar and half over the content. The problem is that I can not to negative margins, so I cannot shift logo image neither down from content, nor up over the toolbar. It should look so:
I made two toolbars – transparent and filled. But the problem is that I cannot stretch bottom of the content to the top of the filled toolbar because it is inside the transparent toolbar. Here is the picture and code.
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbarTop"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorBrandColor"
app:popupTheme="#style/Theme.AppCompat.Light.DarkActionBar"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<ImageView
android:id="#+id/imageViewTop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:src="#drawable/sponge_bob" />
</android.support.v7.widget.Toolbar>
<FrameLayout
android:id="#+id/content_frame_to_inflate"
android:layout_width="wrap_content"
android:layout_height="0dp"
app:layout_constraintTop_toBottomOf ="#+id/toolbarTop"
app:layout_constraintBottom_toTopOf="#+id/toolbarBottomTransparent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbarBottomTransparent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/content_frame_to_inflate"
app:contentInsetStart="0dp">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="parent" >
<android.support.v7.widget.Toolbar
android:id="#+id/toolbarBottomFilled"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorBrandColor"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="32dp"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="64dp"
android:src="#drawable/sponge_bob_logo"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.Toolbar>
</android.support.constraint.ConstraintLayout>
How can I do proper layout?

Try something like this.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbarTop"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#cdcdcd"
app:popupTheme="#style/Theme.AppCompat.Light.DarkActionBar"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<ImageView
android:id="#+id/imageViewTop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp" />
</android.support.v7.widget.Toolbar>
<FrameLayout
android:id="#+id/content_frame_to_inflate"
android:layout_width="wrap_content"
android:layout_height="0dp"
app:layout_constraintTop_toBottomOf ="#+id/toolbarTop"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#cdcdcd"
tools:layout_editor_absoluteY="0dp"
tools:layout_editor_absoluteX="8dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
</RelativeLayout>
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:background="#000000"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="10dp"/>
</RelativeLayout>
UPDATED LAYOUT
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbarTop"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#4984ad"
app:popupTheme="#style/Theme.AppCompat.Light.DarkActionBar"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
</android.support.v7.widget.Toolbar>
<FrameLayout
android:id="#+id/content_frame_to_inflate"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbarTop"
android:layout_above="#+id/bottomBar"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center"
android:src="#drawable/background"/>
</FrameLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#4984ad"
android:id="#+id/bottomBar"
tools:layout_editor_absoluteY="0dp"
tools:layout_editor_absoluteX="8dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
</RelativeLayout>
<ImageView
android:layout_width="200dp"
android:layout_height="70dp"
android:src="#drawable/SpongeBob_SquarePants_logo"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="25dp"/>
</RelativeLayout>