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Two Recycler Views inside a MotionLayout creating problems

I am new in using Motion Layout and I have used two Recycler views rv_horizontal and rv_vertical ,rv_horizontal is using LinearLayout Manger with horizontal orientation and rv_vertical is using GridLayout Manger. I have used both of them within Motion Layout. What I want is,when I scroll up the rv_vertical then rv_horizontal, along with the Text ViewtxtCategory, should disappear.
What I tried is following:
home.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.motion.widget.MotionLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".Home"
android:background="#color/bgcolor"
app:layoutDescription="#xml/fragment_home_scene">
<!-- TODO: Update blank fragment layout -->
<TextView
android:id="#+id/txtCategory"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="#string/category"
android:textSize="8pt"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rv_horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/txtCategory"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="#+id/txtFamousPlaces"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="#string/famous_places"
android:textSize="8pt"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/rv_horizontal" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rv_vertical"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/txtFamousPlaces"
app:layout_constraintVertical_bias="0.0" />
</androidx.constraintlayout.motion.widget.MotionLayout>
SceneFile of Home Fragment i.e., home_scene.xml :
<?xml version="1.0" encoding="utf-8"?>
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:motion="http://schemas.android.com/tools">
<ConstraintSet android:id="#+id/start">
<Constraint android:id="#+id/txtCategory"
android:layout_width="0dp"
android:layout_height="wrap_content"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintTop_toTopOf="parent" />
<Constraint
android:layout_height="wrap_content"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
android:layout_width="match_parent"
app:layout_constraintTop_toBottomOf="#id/txtCategory"
android:id="#+id/rv_horizontal"
app:layout_constraintBottom_toTopOf="#+id/txtFamousPlaces" />
</ConstraintSet>
<ConstraintSet android:id="#+id/end">
<Constraint android:id="#id/txtCategory"
android:layout_width="0dp"
android:layout_height="wrap_content"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintBottom_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toTopOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
<Constraint
android:layout_height="0dp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
android:layout_width="match_parent"
app:layout_constraintTop_toBottomOf="#id/txtCategory"
android:id="#+id/rv_horizontal"
app:layout_constraintBottom_toTopOf="parent" />
</ConstraintSet>
<Transition
app:constraintSetEnd="#id/end"
app:constraintSetStart="#+id/start">
<OnSwipe
motion:onTouchUp="stop"
motion:dragDirection="dragUp"
motion:touchAnchorId="#+id/rv_vertical"
app:moveWhenScrollAtTop="true"/>
</Transition>
</MotionScene>
I am facing the following problems, if anyone knows please help me:
I am scrolling up the rv_vertical but nothing is happening , although I have set the attribute motion:touchAnchorId="#+id/rv_vertical" within OnSwipe attribute in home_scene.xml file. As you can see.
When I scroll up the FamousPlaces then scroll down it then recycler view rv_horizontal does not load completey. As following
I tell you again what I want is,when I scroll up the rv_vertical, rv_horizontal, along with the Text ViewtxtCategory, should disappear.And when I scroll down rv_vertical, rv_horizontal should loaded completely. If anybody knows please help me.

CollapsingToolbarLayout with fixed/pinned Toolbar and functionality of "enterAlways"

I have a standard "CollapsingToolbarLayout" implementation based on material design guidelines.
With the the settings below I was able to achieve behavior depicted on the picture:
<CoordinatorLayout ...>
<AppBarLayout ...>
<CollapsingToolbarLayout
app:layout_scrollFlags="scroll|enterAlways"
...>
<Toolbar
app:layout_collapseMode="pin">
</Toolbar>
<MyCustomContent01 ... />
</CollapsingToolbarLayout>
</AppBarLayout>
<MyCustomContent02 ... />
</CoordinatorLayout>
Question
How to achieve the following behavior?:
Scrolling up: always expand the Toolbar fully, even if we are not on the top of the list.
Scrolling down: just collapse the Toolbar, but don't hide it.
In other words: How can I get rid of the step 3 while preserving the condition of step 4?
Research
For me the best article on this topic seems to be this one, however none of the presented configurations match my needs.
Attempt one:
<CollapsingToolbarLayout
app:layout_scrollFlags="scroll|enterAlways"
...>
Never hide fully the Toolbar (getting rid of step 3): FAIL
Expand the Toolbar even if we are not on the top: OK
Attempt two
<CollapsingToolbarLayout
app:layout_scrollFlags="scroll|exitUntilCollapsed"
...>
Never hide fully the Toolbar (getting rid of step 3): OK
Expand the Toolbar even if we are not on the top: FAIL

The default CollapsingToolbarLayout provided by the Material library is too limited to a set of predefined animations. To create our own custom effects, say you want to fully expand the header layout when scrolling up on the RecyclerView/ NestedScrollView even if you are not on top of the scroll view, you can use the powerful MotionLayout which is a subclass of ConstraintLayout for building animations. If you are happy to replace the existing view hierarchy with a flat Constraint-layout equivalent, read the detailed answer given below.
Here I am going to show you how to create the "enterAlways" effect with an always pinned header layout, all with in three simple steps.
Before writing any code, see the gif image given below to better understand what we are trying to create.
1. Add the ConstraintLayout dependency:
To use MotionLayout in your project, add the ConstraintLayout 2.0 dependency to your app's build.gradle file. If you're using AndroidX, add the following dependency:
dependencies {
implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta2'
}
If you aren't using AndroidX, add the following support library dependency:
dependencies {
implementation 'com.android.support.constraint:constraint-layout:2.0.0-beta2'
}
2. Create the MotionLayout file:
MotionLayout is a subclass of ConstraintLayout, so you can transform any existing ConstraintLayout into a MotionLayout. So create one layout file as shown below.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.motion.widget.MotionLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:motion="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
motion:layoutDescription="#xml/motionscene"
tools:showPaths="false">
<View
android:id="#+id/toolbar_image"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#345634"
android:fitsSystemWindows="true"
motion:layout_constraintBottom_toBottomOf="#id/toolbar"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:src="#drawable/abc_ic_ab_back_material"
android:tint="?android:attr/textColorPrimaryInverse"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:id="#+id/customHeader"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toEndOf="#id/home"
motion:layout_constraintTop_toTopOf="parent">
<LinearLayout
android:id="#+id/row1"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="8dp">
<View
android:layout_width="20dp"
android:layout_height="20dp"
android:background="#345678" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:text="some text"
android:textColor="#ffffff" />
</LinearLayout>
<LinearLayout
android:id="#+id/row2"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="8dp"
android:layout_marginRight="16dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="8dp">
<View
android:layout_width="20dp"
android:layout_height="20dp"
android:background="#345678" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:text="some text"
android:textColor="#ffffff" />
</LinearLayout>
<LinearLayout
android:id="#+id/row3"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="8dp"
android:layout_marginRight="16dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="8dp">
<View
android:layout_width="20dp"
android:layout_height="20dp"
android:background="#345678" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:text="some text"
android:textColor="#ffffff" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/toolbar"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="8dp"
android:background="#345634"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="8dp"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toEndOf="#id/home"
motion:layout_constraintTop_toBottomOf="#id/customHeader">
<View
android:layout_width="20dp"
android:layout_height="20dp"
android:background="#F44336" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:text="Toolbar Title"
android:textColor="#ffffff" />
<View
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_marginLeft="16dp"
android:background="#F44336" />
</LinearLayout>
<androidx.core.widget.NestedScrollView
android:id="#+id/scrollView"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#ffffff"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintTop_toBottomOf="#+id/toolbar_image">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="#dimen/text_margin"
android:text="#string/large_text" />
</androidx.core.widget.NestedScrollView>
</androidx.constraintlayout.motion.widget.MotionLayout>
3. Create a MotionScene:
In the previous step, motion:layoutDescription attribute references a MotionScene. A MotionScene is an XML resource file that contains all of the motion descriptions for the corresponding layout. To keep layout information separate from motion descriptions, each MotionLayout references a separate MotionScene. Note that definitions in the MotionScene take precedence over any similar definitions in the MotionLayout.
Following is a sample MotionScene file that creates the required fixed/pinned toolbar with 'enterAlways' effect:
Put the file in the xml folder under the res directory.
motionscene.xml
<?xml version="1.0" encoding="utf-8"?>
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:motion="http://schemas.android.com/apk/res-auto">
<Transition
motion:constraintSetEnd="#id/collapsed"
motion:constraintSetStart="#id/expanded">
<OnSwipe
motion:dragDirection="dragUp"
motion:moveWhenScrollAtTop="false"
motion:touchAnchorId="#id/scrollView"
motion:touchAnchorSide="top" />
</Transition>
<ConstraintSet android:id="#+id/expanded">
<Constraint android:id="#id/toolbar_image" />
<Constraint android:id="#id/toolbar" />
<Constraint android:id="#id/customHeader">
<PropertySet android:alpha="1" />
</Constraint>
</ConstraintSet>
<ConstraintSet android:id="#+id/collapsed">
<Constraint
android:id="#id/toolbar_image"
android:layout_height="?attr/actionBarSize"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintTop_toTopOf="parent">
</Constraint>
<Constraint
android:id="#id/customHeader"
android:layout_width="0dp"
android:layout_height="wrap_content"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toEndOf="#id/home"
motion:layout_constraintTop_toTopOf="parent">
<PropertySet android:alpha="0" />
</Constraint>
<Constraint
android:id="#id/toolbar"
android:layout_height="?attr/actionBarSize"
android:layout_marginStart="16dp"
android:layout_marginTop="0dp"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toEndOf="#id/home"
motion:layout_constraintTop_toTopOf="parent">
</Constraint>
</ConstraintSet>
</MotionScene>
That's all. You created an amazing custom animation with out writing any java/kotlin code. MotionLayout is fully declarative, meaning that you can describe any transitions in XML, no matter how complex.
The following repo by Google includes more samples.
https://github.com/googlesamples/android-ConstraintLayoutExamples

you have to combine both flags to get that effect
Try this
app:layout_scrollFlags="scroll|exitUntilCollapsed|enterAlways"

Android: Show toolbar when scrolling UP(Drag UP) and hide when scrolling down(Drag down)

I have a scenario where the Toolbar/Action Bar, in an Activity, has an opposite behaviour than the general Toolbar behaviour. It should hide when the motion layout inside a fragment is scrolled UP and show when the motion layout is scrolled DOWN, which is the opposite of the general scroll behaviour.
I trie hiding the Support Action Bar and the toolbar layout completely but it is without any animation and does not bode well, since the Activity contains a BottomNavigation View, so the constant hiding and showing of Action bar does not look good.
supportActionBar?.hide()
containerToolbar.visibility = View.GONE
The AppBarLayout.LayoutParams scroll-flags apparently add the general behaviour.
fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.motion.widget.MotionLayout
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"
app:layoutDescription="#xml/collapsing_header_arc"
app:showPaths="false"
android:background="#color/white"
tools:showPaths="true">
<com.github.florent37.shapeofview.shapes.ArcView
android:id="#+id/header"
android:layout_width="0dp"
android:layout_height="200dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:shape_arc_height="26dp"
android:background="#color/yellow_dark"
app:shape_arc_position="bottom">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/bg_actionbar_gradient" />
<ScrollView
android:id="#+id/scrollview_counts_container2"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<include
android:id="#+id/counts_container"
layout="#layout/layout_card_count"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</ScrollView>
</com.github.florent37.shapeofview.shapes.ArcView>
<View
android:id="#+id/guideline_anchor"
android:layout_width="wrap_content"
android:layout_height="5dp"
android:orientation="horizontal"
android:background="#color/red_dark"
app:layout_constraintTop_toBottomOf="#id/header"/>
<View
android:id="#+id/recyclerView"
android:layout_width="0dp"
android:layout_height="210dp"
app:layout_constraintBottom_toBottomOf="#+id/guideline_anchor"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/guideline_anchor"
android:background="#color/btnRedAlpha" />
<androidx.core.widget.NestedScrollView
android:id="#+id/parent_parent_dashboard"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/recyclerView"
android:background="#color/transparent"
android:layout_marginTop="#dimen/marginNormal">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/parent_dashboard"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ScrollView
android:id="#+id/scrollview_counts_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toTopOf="#+id/calendar_container"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed"
app:layout_constraintVertical_bias="0.0"
android:nestedScrollingEnabled="true"
android:visibility="gone">
<include
android:id="#+id/counts_container"
layout="#layout/layout_card_count"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"/>
</ScrollView>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#color/white"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_margin="#dimen/marginBig"
app:layout_constraintTop_toBottomOf="#id/scrollview_counts_container"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintVertical_bias="0.0">
<View
android:layout_width="match_parent"
android:layout_height="400dp"
android:background="#color/yellow_dark" />
<View
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_marginTop="#dimen/marginBig"
android:background="#color/yellow_dark"/>
<View
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_marginTop="#dimen/marginBig"
android:background="#color/yellow_dark"/>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
<!--<androidx.appcompat.widget.AppCompatTextView-->
<!--android:id="#+id/headerText"-->
<!--android:layout_width="wrap_content"-->
<!--android:layout_height="wrap_content"-->
<!--android:layout_gravity="center_vertical"-->
<!--android:layout_marginLeft="23sp"-->
<!--android:elevation="4dp"-->
<!--android:gravity="center_vertical|left"-->
<!--android:text="I love paris"-->
<!--android:shadowColor="#3E3E3E"-->
<!--android:shadowDx="2"-->
<!--android:shadowDy="2"-->
<!--android:shadowRadius="4"-->
<!--android:textColor="#android:color/holo_blue_dark"/>-->
</androidx.constraintlayout.motion.widget.MotionLayout>
collapsing_header_arc.xml
<?xml version="1.0" encoding="utf-8"?>
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<Transition
app:constraintSetEnd="#id/end"
app:constraintSetStart="#id/start">
<OnSwipe
app:dragDirection="dragUp"
app:touchAnchorId="#id/guideline_anchor"
app:touchAnchorSide="top" />
</Transition>
<ConstraintSet android:id="#+id/start">
<Constraint
android:id="#id/header"
android:layout_height="240dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<CustomAttribute
app:attributeName="arcHeightDp"
app:customFloatValue="60" />
</Constraint>
<Constraint
android:id="#id/scrollview_counts_container2">
<CustomAttribute
app:attributeName="visibility"
app:customStringValue="visible" />
</Constraint>
</ConstraintSet>
<ConstraintSet android:id="#+id/end">
<Constraint
android:id="#id/header"
android:layout_height="0dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<CustomAttribute
app:attributeName="arcHeightDp"
app:customFloatValue="0" />
</Constraint>
<Constraint
android:id="#id/scrollview_counts_container2">
<CustomAttribute
app:attributeName="visibility"
app:customStringValue="gone" />
</Constraint>
</ConstraintSet>
</MotionScene>
Is there a way to implement this?

You can try to make collapse toolbar and manage it as you want. If you have problems to manage activity toolbar from the fragment you could use callback / or events / or observables to call activity animation when something happens from fragment. So for example you have a view in Activity with animation method something like here Show and hide a View with a slide up/down animation and just call it from the fragment.

MotionLayout with vertical ScrollView

I'm trying to make animation with motion layout, and want to set scrollView as targetAnchor for motion scene onSwipe Transition, but it doesn't work.
Maybe I don't know some thing about onSwipe transition.
Here is my layout file
<androidx.constraintlayout.motion.widget.MotionLayout 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:background="#color/main_background_color"
app:layoutDescription="#xml/base_scroll_scene">
<ImageView
android:id="#+id/background_image"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="#dimen/scrollable_background_image_margin_bottom"
android:scaleType="centerCrop"
android:src="#drawable/lift_bg"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="#dimen/top_gradient_mask_height"
android:background="#drawable/top_gradient_mask"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/ski_more_logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/ski_more_logo_margin_top"
android:src="#drawable/ic_skimore_logo"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/locked_icon"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_marginTop="#dimen/locked_icon_margin_top"
android:src="#drawable/ic_lock"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/ski_more_logo" />
<FrameLayout
android:id="#+id/bottom_gradient_mask"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#drawable/bottom_gradient_mask"
app:layout_constraintBottom_toBottomOf="#+id/background_image" />
<ScrollView
android:id="#+id/content_scroll_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:overScrollMode="never"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent">
<FrameLayout
android:id="#+id/content_container_view"
android:layout_width="match_parent"
android:clickable="false"
android:layout_height="match_parent" />
</ScrollView>
</androidx.constraintlayout.motion.widget.MotionLayout>
In scroll view programmatically i'm adding some content with big height, which will be scrollable.
And here is my motion scene
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:motion="http://schemas.android.com/apk/res-auto">
<Transition
motion:constraintSetEnd="#+id/end"
motion:constraintSetStart="#+id/start"
motion:duration="1000">
<OnSwipe
motion:dragDirection="dragUp"
motion:touchAnchorId="#+id/content_scroll_view"
motion:touchAnchorSide="top" />
</Transition>
<ConstraintSet android:id="#+id/start"/>
<ConstraintSet android:id="#+id/end">
<Constraint
android:id="#+id/background_image"
android:layout_width="0dp"
android:layout_height="#dimen/top_gradient_mask_height"
android:layout_marginBottom="#dimen/scrollable_background_image_margin_bottom"
android:scaleType="centerCrop"
android:src="#drawable/lift_bg"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintTop_toTopOf="parent" />
</ConstraintSet>
</MotionScene>
Please help me, Thanks.

Have you tried to replace ScrollView with NestedScrollView?
And, also, I would define ConstraintSet "start" as well.

I had the same issue on using a scrolling view with motion layout to implement my custom animations. But simply changing ScrollView to NestedScrollView fixed everything and animations work as expected

Android motion layout not working accordingly

I am new to motionlayout and been following various tutorials online like this to get an understanding of how it works. From a nutshell I have come to know it basically animates constraintSets, you have a start and end constraintSet which you can further customize with KeyFrameSets. I have this layout
I want to mimic Lyft's bottom sheet
With my layout the Where are you going button is suppose to slowly fade out as the search destination textInputs fade in. The recyclerview at the bottom is suppose to hold saved addresses, it will not be affected. I tried this implementation using a standard bottomsheet but had challenges with the animation, it had this weird flickering so I decided to use a MotionLayout with a normal view.
My bottomsheet layout is as follows
<com.google.android.material.card.MaterialCardView 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/cardChooseAddressBottomSheet"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
app:shapeAppearance="#style/ShapeAppearanceRoundedLargeTopCorners">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/bottomSheetConstraintLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="#dimen/activity_horizontal_margin"
android:layout_marginRight="#dimen/activity_horizontal_margin"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="#+id/swipeUpHandle"
android:layout_width="50dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:background="#drawable/ic_swipe_up_handle"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.android.material.textview.MaterialTextView
android:id="#+id/hiThere"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/medium_margin"
android:text="#string/hi_there"
android:textAppearance="#style/h6_headline"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/swipeUpHandle"
/>
<com.google.android.material.button.MaterialButton
android:id="#+id/btnSearch"
style="#style/Widget.MaterialComponents.Button.OutlinedButton"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_marginTop="#dimen/medium_margin"
android:gravity="start|center_vertical"
android:letterSpacing="0.0"
android:text="#string/where_are_you_going"
android:textAllCaps="false"
android:textAppearance="#style/subtitle1"
android:textColor="#android:color/darker_gray"
app:backgroundTint="#android:color/white"
app:icon="#drawable/ic_search"
app:iconTint="#android:color/black"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/hiThere"
app:shapeAppearanceOverlay="#style/ShapeAppearanceRoundedMediumAllCorners" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:id="#+id/addressViews"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/btnSearch">
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/inputOrigin"
style="#style/textInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/medium_margin"
android:hint="#string/search_destination"
android:textColorHint="#android:color/darker_gray"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/edtOrigin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text"
android:textAppearance="#style/subtitle1"
android:textColor="#android:color/white" />
</com.google.android.material.textfield.TextInputLayout>
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/inputDestination"
style="#style/textInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/medium_margin"
android:hint="#string/search_destination"
android:textColorHint="#android:color/darker_gray"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/inputOrigin">
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/edtDestination"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text"
android:textAppearance="#style/subtitle1"
android:textColor="#android:color/white" />
</com.google.android.material.textfield.TextInputLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="0dp"
android:id="#+id/recyclerAddresses"
android:layout_marginTop="#dimen/medium_margin"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/addressViews"
tools:listitem="#layout/recycler_view_item" />
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.card.MaterialCardView>
And my parent layout where I include the bottomsheet is as follows
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.motion.widget.MotionLayout 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/motionLayout"
app:layoutDescription="#xml/taxi_bottomsheet_scene"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<include
layout="#layout/choose_destination_bottom_sheet_layout"/>
</androidx.constraintlayout.motion.widget.MotionLayout>
And finally my taxi_bottomsheet_scene motion scene is
<?xml version="1.0" encoding="utf-8"?>
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<Transition
app:constraintSetEnd="#+id/expanded"
app:constraintSetStart="#+id/collapsed"
app:duration="1000">
<OnSwipe
app:touchAnchorId="#+id/btnSearch"
app:touchAnchorSide="top"
app:dragDirection="dragUp"/>
</Transition>
<ConstraintSet android:id="#+id/expanded">
<Constraint
android:id="#+id/cardChooseAddressBottomSheet"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHeight_percent="1"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0" />
<Constraint
android:id="#+id/addressViews"
app:layout_constraintHeight_percent="1"/>
<Constraint
android:id="#+id/btnSearch"
app:layout_constraintHeight_percent="0"/>
</ConstraintSet>
<ConstraintSet android:id="#+id/collapsed">
<Constraint
android:id="#+id/cardChooseAddressBottomSheet"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHeight_percent="0.4"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />
<Constraint
android:id="#+id/addressViews"
app:layout_constraintHeight_percent="0.0"/>
<Constraint
android:id="#+id/btnSearch"
app:layout_constraintHeight_percent="0.0"/>
</ConstraintSet>
</MotionScene>
When I launch this app I cannot get the bottomsheet to slide up, it simply does not respond in any way. One thing I noticed though is after adding the app:layoutDescription="#xml/taxi_bottomsheet_scene"attribute, the bottom sheet size changed to what I had specified in the constraintSetStart but the addressViews view did not.
So my layout looks like
So my question is, where I am going wrong for my bottomsheet not to respond to my swipes and addressViews to disappear in the initial state?

I finally managed to make it work, both with MotionLayout and CoordinatorLayout. I will only post the Coordinator solution as it is long and I do not have the time, if someone needs it, comment and I will post.
I created 3 layouts, 1. The main layout with the map, 2. Top bar with the to and from address EditTexts and 3. The bottom layout that slides up and reveals the top bar.
Solution 1 using CoordinatorLayout
The topbar
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:focusable="true"
android:layout_marginBottom="#dimen/medium_margin"
app:layout_scrollFlags="noScroll">
<com.google.android.material.appbar.MaterialToolbar
android:id="#+id/topToolBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navigationIcon="#drawable/ic_arrow_back_black_24dp" />
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/addressViews"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginStart="#dimen/activity_horizontal_margin"
android:layout_marginEnd="#dimen/activity_horizontal_margin"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/topToolBar">
<androidx.appcompat.widget.AppCompatImageView
android:id="#+id/imgOrigin"
android:layout_width="#dimen/activity_horizontal_margin"
android:layout_height="#dimen/activity_horizontal_margin"
android:layout_marginStart="#dimen/medium_margin"
android:layout_marginEnd="#dimen/medium_margin"
app:layout_constraintBottom_toBottomOf="#+id/inputOrigin"
app:layout_constraintEnd_toStartOf="#+id/inputOrigin"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/inputOrigin"
app:srcCompat="#drawable/ic_origin"
app:tint="#color/colorAccent" />
<View
android:layout_width="2dp"
android:layout_height="0dp"
android:layout_marginTop="#dimen/xsmall_margin"
android:layout_marginBottom="#dimen/xsmall_margin"
android:background="#drawable/accent_to_color_primary_dark__negative_90_gradient"
app:layout_constraintBottom_toTopOf="#+id/imgDestination"
app:layout_constraintEnd_toEndOf="#+id/imgOrigin"
app:layout_constraintStart_toStartOf="#+id/imgOrigin"
app:layout_constraintTop_toBottomOf="#+id/imgOrigin" />
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/inputOrigin"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/medium_margin"
android:hint="#string/pick_up_location"
android:marqueeRepeatLimit="marquee_forever"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/imgOrigin"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/edtOrigin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:inputType="textPostalAddress"
android:singleLine="true"
android:textAppearance="#style/subtitle1" />
</com.google.android.material.textfield.TextInputLayout>
<androidx.appcompat.widget.AppCompatImageView
android:id="#+id/imgDestination"
android:layout_width="#dimen/activity_horizontal_margin"
android:layout_height="#dimen/activity_horizontal_margin"
android:layout_marginStart="#dimen/medium_margin"
android:layout_marginEnd="#dimen/medium_margin"
app:layout_constraintBottom_toBottomOf="#+id/inputDestination"
app:layout_constraintEnd_toStartOf="#+id/inputDestination"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/inputDestination"
app:srcCompat="#drawable/ic_destination"
app:tint="#color/colorPrimaryDark" />
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/inputDestination"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/medium_margin"
android:hint="#string/search_destination"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/imgDestination"
app:layout_constraintTop_toBottomOf="#id/inputOrigin">
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/edtDestination"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:inputType="textPostalAddress"
android:singleLine="true"
android:textAppearance="#style/subtitle1" />
</com.google.android.material.textfield.TextInputLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.appbar.AppBarLayout>
The bottom layout that acts like a bottom sheet
<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/cardChooseAddressBottomSheet"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:cardBackgroundColor="#color/white"
app:behavior_hideable="false"
app:layout_behavior="#string/bottom_sheet_behavior">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="#+id/swipeUpHandle"
android:layout_width="35dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:layout_marginLeft="#dimen/activity_horizontal_margin"
android:layout_marginRight="#dimen/activity_horizontal_margin"
android:background="#drawable/ic_swipe_up_handle"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.android.material.textview.MaterialTextView
android:id="#+id/hiThere"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hi_there"
android:layout_marginLeft="#dimen/activity_horizontal_margin"
android:layout_marginRight="#dimen/activity_horizontal_margin"
android:textAppearance="#style/h6_headline"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/swipeUpHandle" />
<com.google.android.material.button.MaterialButton
android:id="#+id/btnSearch"
style="#style/Widget.MaterialComponents.Button.OutlinedButton"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_marginLeft="#dimen/activity_horizontal_margin"
android:layout_marginRight="#dimen/activity_horizontal_margin"
android:gravity="start|center_vertical"
android:letterSpacing="0.0"
android:text="#string/where_are_you_going"
android:textAllCaps="false"
android:textAppearance="#style/subtitle1"
android:textColor="#android:color/darker_gray"
app:backgroundTint="#android:color/white"
app:icon="#drawable/ic_search"
app:iconSize="#dimen/medium_icon"
app:iconTint="#color/colorAccent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/hiThere"
app:shapeAppearanceOverlay="#style/ShapeAppearanceRoundedMediumAllCorners" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerAddresses"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/btnSearch" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerSearchAddresses"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#color/white"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/btnSearch" />
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.card.MaterialCardView>
And finally the two layouts included in my map layout
<?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:layout_width="match_parent"
android:id="#+id/coordinator"
android:layout_height="match_parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_percent="0.67"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.appcompat.widget.AppCompatImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imgMapCenter"
android:layout_marginBottom="#dimen/xlarge_margin"
android:visibility="invisible"
android:tint="#color/colorAccent"
app:layout_constraintBottom_toBottomOf="#id/map"
app:layout_constraintEnd_toEndOf="#id/map"
app:layout_constraintStart_toStartOf="#id/map"
app:layout_constraintTop_toTopOf="#id/map"
app:srcCompat="#drawable/ic_destination" />
</androidx.constraintlayout.widget.ConstraintLayout>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fabMyLocation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="#dimen/activity_horizontal_margin"
app:backgroundTint="#color/white"
app:fabSize="mini"
app:layout_anchor="#id/cardChooseAddressBottomSheet"
app:layout_anchorGravity="top|right"
app:srcCompat="#drawable/ic_origin"
app:tint="#color/colorAccent" />
<include layout="#layout/taxi_fragment_set_destination_top_bar" />
<include layout="#layout/taxi_fragment_bottom_sheet_addresses_layout" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
And my fragment
final private BottomSheetBehavior.BottomSheetCallback addressBottomSheetCallBack = new BottomSheetBehavior.BottomSheetCallback() {
#Override
public void onStateChanged(#NonNull View bottomSheet, int newState) {
switch (newState) {
case BottomSheetBehavior.STATE_HIDDEN:
break;
case BottomSheetBehavior.STATE_SETTLING:
break;
case BottomSheetBehavior.STATE_EXPANDED:
if (!allPermissionsGranted())
requestForLocationPermissions();
topAddressBar.setVisibility(Visibility.VISIBLE);
fabMyLocation.hide();
break;
case BottomSheetBehavior.STATE_COLLAPSED:
if (!allPermissionsGranted())
requestForLocationPermissions();
topAddressBar.setVisibility(Visibility.INVISIBLE);
fabMyLocation.show();
break;
case BottomSheetBehavior.STATE_DRAGGING:
break;
case BottomSheetBehavior.STATE_HALF_EXPANDED:
break;
}
}
BottomSheetBehavior addressBottomSheetBehavior = BottomSheetBehavior.from(cardChooseAddressBottomSheet);
topAddressBar.post(() -> {
CoordinatorLayout.LayoutParams layoutParams = (CoordinatorLayout.LayoutParams) cardChooseAddressBottomSheet.getLayoutParams();
layoutParams.height = ((Resources.getSystem().getDisplayMetrics().heightPixels + (int) utils.percentageOf(62, btnSearch.getMeasuredHeight())) - topAddressBar.getMeasuredHeight());
});
addressBottomSheetBehavior.setPeekHeight((int) utils.percentageOf(29, Resources.getSystem().getDisplayMetrics().heightPixels), true);
addressBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
topToolBar.setNavigationOnClickListener(view12 -> {
if (addressBottomSheetBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
utopAddressBar.setVisibility(INVISIBLE);
addressBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
} else
Navigation.findNavController(view12).navigateUp();
});
addressBottomSheetBehavior.addBottomSheetCallback(addressBottomSheetCallBack);
Notice am using INVISIBLE instead of GONE on the topAddressBar? that is because everytime I called GONE the layout would ideally recalculate according to my assumption and the map would flicker, to stop that I had to use invisible as the layout does not shrink instead it still takes up the same space but just not visible.
Also notice I am adding padding cardChooseAddressBottomSheet.getLayoutParams() this is because I need the Sheet not to go too deep underneath the topAddressBar as not to hide my recyclerview content. The current padding makes sure the recyclerview is fully visible and everything else on top of it is underneath the topAddressBar