Develop Reference

Constraint layout in Custom Dialog problem

I have such XML file for custom Dialog:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:paddingHorizontal="15dp"
android:paddingVertical="10dp">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/cl_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
android:paddingBottom="15dp">
<TextView
style="#style/tv_big"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="#id/cl_header"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:text="Filter"/>
<com.google.android.material.button.MaterialButton
android:id="#+id/bt_reset"
android:textColor="#color/black"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="#style/Widget.MaterialComponents.Button.OutlinedButton"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintEnd_toEndOf="#id/cl_header"
android:text="RESET FILTERS"/>
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/cl_distance"
app:layout_constraintTop_toBottomOf="#id/cl_header"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/tv_distance_title"
style="#style/tv_medium"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Distance range"/>
<TextView
android:id="#+id/tv_distance_result"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:textAlignment="center"
app:layout_constraintBottom_toBottomOf="#id/tv_distance_title"
app:layout_constraintLeft_toRightOf="#id/tv_distance_title"
app:layout_constraintRight_toRightOf="parent"
android:background="#ddd"
android:padding="3dp"
android:textColor="#333"
android:text="0 km - 500km"/>
<com.google.android.material.slider.RangeSlider
android:id="#+id/slider_distance"
app:layout_constraintTop_toBottomOf="#id/tv_distance_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:labelBehavior="gone"
android:stepSize="1.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/cl_location"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/cl_distance"
app:layout_constraintStart_toStartOf="parent">
<TextView
android:id="#+id/tv_location_title"
style="#style/tv_medium"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Location"/>
<EditText
android:id="#+id/et_location"
android:layout_height="wrap_content"
android:layout_width="match_parent"
app:layout_constraintTop_toBottomOf="#id/tv_location_title"
android:hint="#string/filter_location_et_hint" />
</androidx.constraintlayout.widget.ConstraintLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/cl_location"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<Button
android:id="#+id/bt_cancel"
android:backgroundTint="#ccc"
android:textColor="#color/black"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:text="CANCEL"/>
<Button
android:id="#+id/bt_save"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="save"
android:layout_marginHorizontal="20dp"/>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
Android Studio renders it in this way:
And this is what I want to have in my Dialog.
BUT:
On physical device and on emulator it looks different than in Android Studio:
My question is: how to place "Filter" title on the left, and make the location EditText matching the parent (in the working app)?

What everybody else said is correct, keeping your layout flat is good for both performance and for these situations where you want to quickly figure out why isn't the layout being laid out the way you wanted it ;)
Try this :
<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:paddingHorizontal="15dp"
android:paddingVertical="10dp">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="start"
android:text="Filter"
app:layout_constraintBottom_toBottomOf="#id/bt_reset"
app:layout_constraintEnd_toStartOf="#id/bt_reset"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#id/bt_reset" />
<com.google.android.material.button.MaterialButton
android:id="#+id/bt_reset"
style="#style/Widget.MaterialComponents.Button.OutlinedButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="RESET FILTERS"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/tv_distance_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Distance range"
app:layout_constraintBottom_toBottomOf="#id/tv_distance_result"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#id/tv_distance_result" />
<TextView
android:id="#+id/tv_distance_result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:background="#ddd"
android:gravity="center"
android:paddingHorizontal="18dp"
android:paddingVertical="3dp"
android:text="0 km - 500km"
android:textColor="#333"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#id/bt_reset" />
<com.google.android.material.slider.RangeSlider
android:id="#+id/slider_distance"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:stepSize="1.0"
app:labelBehavior="gone"
app:layout_constraintTop_toBottomOf="#id/tv_distance_result" />
<TextView
android:id="#+id/tv_location_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Location"
app:layout_constraintTop_toBottomOf="#id/slider_distance" />
<EditText
android:id="#+id/et_location"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="test"
app:layout_constraintTop_toBottomOf="#id/tv_location_title" />
<Button
android:id="#+id/bt_cancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginEnd="20dp"
android:backgroundTint="#ccc"
android:text="CANCEL"
android:textColor="#color/colorBlack"
app:layout_constraintEnd_toStartOf="#id/bt_save"
app:layout_constraintTop_toBottomOf="#id/et_location" />
<Button
android:id="#+id/bt_save"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginEnd="20dp"
android:text="save"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#id/et_location" />
</androidx.constraintlayout.widget.ConstraintLayout>

I changed inner ConstraintLayouts into LinearLayouts and used weights. I also used this trick to fill space between e.g. "Filter" title and "reset filters" button.
There was also an issue with ll_location LinearLayout - it didn't match the parent.
I replaced:
<LinearLayout
android:id="#+id/ll_location"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/ll_distance_ext"
android:orientation="vertical">
<!-- content -->
</LinearLayout>
into:
<LinearLayout
android:id="#+id/ll_location"
android:layout_width="0dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/ll_distance_ext"
android:orientation="vertical">
<!-- content -->
</LinearLayout>
And then it worked.
The reason why I don't want to use flat layout (why I use nested layouts) is that IMHO the flat layout makes the code more difficult to maintain.
When you have Views splited into groups you can easily replace them, no matter how many View there are in a group.
My solution:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:paddingHorizontal="15dp"
android:paddingVertical="10dp">
<LinearLayout
android:id="#+id/ll_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
android:paddingBottom="15dp">
<TextView
style="#style/tv_big"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:text="Filter"/>
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1" />
<com.google.android.material.button.MaterialButton
android:id="#+id/bt_reset"
android:textColor="#color/black"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="#style/Widget.MaterialComponents.Button.OutlinedButton"
android:text="reset filters"/>
</LinearLayout>
<LinearLayout
android:id="#+id/ll_distance_ext"
app:layout_constraintTop_toBottomOf="#id/ll_header"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="#+id/tv_distance_title"
style="#style/tv_medium"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Distance range"/>
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1" />
<TextView
android:id="#+id/tv_distance_result"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:textAlignment="center"
android:background="#ddd"
android:padding="3dp"
android:textColor="#333"
android:text="0 km - 500km"/>
</LinearLayout>
<com.google.android.material.slider.RangeSlider
android:id="#+id/slider_distance"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:labelBehavior="gone"
android:stepSize="1.0" />
</LinearLayout>
<LinearLayout
android:id="#+id/ll_location"
android:layout_width="0dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/ll_distance_ext"
android:orientation="vertical">
<TextView
android:id="#+id/tv_location_title"
style="#style/tv_medium"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Location"/>
<EditText
android:id="#+id/et_location"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:hint="#string/filter_location_et_hint" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/ll_location"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<Button
android:id="#+id/bt_cancel"
android:backgroundTint="#ccc"
android:textColor="#color/black"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:text="cancel"/>
<Button
android:id="#+id/bt_save"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="save"
android:layout_marginHorizontal="20dp"/>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

Bottom of one layout in the middle of another layout vertically in android xml?

I want to create the below layout, but not sure how to do it.
height of both blue layout and white layout is set to "wrap_content" and therefor they don't have a constant height.
The point is, I want the bottom of blue layout to always be in the middle of white layout(vertically). I have no idea how to do it using constraint or relative layout.
I searched but couldn't find any solution to this problem.

modify this accordingly
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/credentials_card"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="20dp"
android:padding="#dimen/spacing_mlarge"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/image_logo">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="#dimen/spacing_medium"
android:visibility="visible"
app:cardBackgroundColor="#color/white"
app:cardCornerRadius="6dp"
app:cardElevation="5dp"
app:cardUseCompatPadding="true"
tools:ignore="MissingConstraints">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="#dimen/spacing_xmlarge">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="25dp"
android:fontFamily="#string/font_family_light"
android:text="L O G I N"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Large"
android:textColor="#color/colorPrimary"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="MOBILE"
android:textAlignment="center"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Caption"
android:textColor="#color/colorPrimary" />
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/mobileNumberET"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="number"
android:maxLength="10"
android:maxLines="1"
android:singleLine="true"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Large"
android:textColor="#color/colorPrimary"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="PASSWORD"
android:textAlignment="center"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Caption"
android:textColor="#color/colorPrimary" />
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/passwordET"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:maxLength="50"
android:maxLines="1"
android:singleLine="true"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Large"
android:textColor="#color/colorPrimary"
android:textStyle="bold" />
</LinearLayout>
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>
<Button
android:id="#+id/loginButton"
android:layout_width="match_parent"
android:layout_height="57dp"
android:layout_marginLeft="50dp"
android:layout_marginRight="50dp"
android:background="#drawable/button_round"
android:text="L O G I N"
android:fontFamily="#string/font_family_light"
android:textAllCaps="false"
android:textColor="#android:color/white"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="#+id/credentials_card"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

You can try this (I don't include border radius so take care of it..)
<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">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="250dp"
android:background="#8F2A2A"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="70dp"
android:layout_marginStart="50dp"
android:layout_marginEnd="50dp"
android:layout_marginTop="200dp"
android:background="#B8C159"
app:layout_constraintTop_toTopOf="#+id/constraintLayout" />
</androidx.constraintlayout.widget.ConstraintLayout>

Here My Ans check
<?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">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginLeft="#dimen/dp_16"
android:layout_marginRight="#dimen/dp_16"
app:cardBackgroundColor="#color/blue"
app:cardCornerRadius="#dimen/dp_10"
app:cardElevation="#dimen/dp_5"
app:cardUseCompatPadding="true"
android:id="#+id/card_container"
app:layout_constraintBottom_toBottomOf="#id/guideline"
app:layout_constraintTop_toTopOf="parent">
</androidx.cardview.widget.CardView>
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.42" />
<androidx.cardview.widget.CardView
android:layout_width="0dp"
android:layout_height="100dp"
app:cardBackgroundColor="#color/white"
app:cardCornerRadius="#dimen/dp_10"
app:cardElevation="#dimen/dp_5"
app:cardUseCompatPadding="true"
android:layout_marginStart="#dimen/dp_20"
android:layout_marginEnd="#dimen/dp_20"
app:layout_constraintStart_toStartOf="#id/card_container"
app:layout_constraintEnd_toEndOf="#id/card_container"
app:layout_constraintTop_toTopOf="#id/guideline"
app:layout_constraintBottom_toTopOf="#id/guideline">
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>

Use constraint layout as parent and then constraint the topOfSmallComponent to the bottomOfBigComponent. Then again constraint the bottomOfSmallComponent to the bottomOf BigComponent.
Example code below:
app:layout_constraintTop_toBottomOf="your_blue_items_id"
app:layout_constraintBottom_toBottomOf="your_blue_items_id"

Why my layout look like this ? Here is my XML file

Here Is my
and XML code first i use a Linear Layout then card View and other views so why my view overwrite where is the problem please watch the AVD picture and tell me where is the error.Sorry for bad english.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/item_linerLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardElevation="10dp">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp">
<TextView
android:id="#+id/item_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:textSize="36sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/item_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Title"
app:layout_constraintStart_toEndOf="#+id/item_id"
app:layout_constraintTop_toTopOf="#+id/item_id" />
<TextView
android:id="#+id/item_AuthorName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Author"
app:layout_constraintStart_toStartOf="#+id/item_title"
app:layout_constraintTop_toBottomOf="#+id/item_title" />
<TextView
android:id="#+id/item_pages"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="3dp"
android:text="100"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>

Try to use android:fitsSystemWindows="true" in your root layout(In your case LinearLayout). I recommend you to read this article to understand system overlapping. I hope it helps)

I have removed redundant LinearLayout parent and made CardView parent. Also your TextView with id item_pages is not overlapping.
<androidx.cardview.widget.CardView
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="wrap_content"
android:layout_margin="5dp"
app:cardElevation="10dp">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp">
<TextView
android:id="#+id/item_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:textSize="36sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/item_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:text="Title"
app:layout_constraintBottom_toTopOf="#id/item_AuthorName"
app:layout_constraintStart_toEndOf="#+id/item_id" />
<TextView
android:id="#+id/item_AuthorName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="4dp"
android:text="Author"
app:layout_constraintBottom_toBottomOf="#id/item_id"
app:layout_constraintStart_toStartOf="#+id/item_title" />
<TextView
android:id="#+id/item_pages"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="3dp"
android:text="100"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>

How to set height of a view in percent using ConstraintLayout

Currently I'm learning ConstraintLayout
below is my code that i have tried so far
<?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"
android:background="#000000"
android:fitsSystemWindows="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".activity.PhaseListActivity">
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="1">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.8"
android:background="#color/colorAccent">
<VideoView
android:id="#+id/myVideoView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="visible" />
<TextSwitcher
android:id="#+id/tvAnimText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:fontFamily="#font/knowledge_bold"
android:textColor="#color/greenColor"
android:textSize="#dimen/_100ssp"
android:textStyle="bold"
tools:text="1" />
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.2"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
</androidx.core.widget.NestedScrollView>
<LinearLayout
android:id="#+id/bottomView"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="bottom"
android:background="#color/greenColor"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="Fixed Bottombar"
android:textColor="#ff00"
android:textStyle="bold" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
I want don't want use nested LinearLayout inside ConstraintLayout
Also in above layout my NestedScrollView is not scrolling
I want to create this type of screen using ConstraintLayout
My expected OUTPUT
I have tried to set Guideline but it didn't work for me, because i don't know how to use Guideline in above layout
Can anybody help me create this screen only using ConstraintLayout
If need more information please do let me know. Thanks in advance. Your efforts will be appreciated.

So, after looking at your xml file, I've come up with solution to get rid of nested LinearLayout hierarchy in below solution:
<?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"
android:background="#000000"
android:fitsSystemWindows="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<androidx.core.widget.NestedScrollView
android:layout_width="0dp"
android:layout_height="0dp"
android:fillViewport="true"
app:layout_constraintBottom_toTopOf="#id/tv_bottom_view"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<VideoView
android:id="#+id/myVideoView"
android:layout_width="0dp"
android:layout_height="0dp"
android:visibility="visible"
app:layout_constrainedHeight="true"
app:layout_constraintBottom_toTopOf="#id/tv1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent="0.85"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed" />
<TextSwitcher
android:id="#+id/tvAnimText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:fontFamily="#font/knowledge_bold"
android:textColor="#color/greenColor"
android:textSize="#dimen/_100ssp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="#id/myVideoView"
app:layout_constraintEnd_toEndOf="#id/myVideoView"
app:layout_constraintStart_toStartOf="#id/myVideoView"
app:layout_constraintTop_toTopOf="#id/myVideoView"
tools:text="1" />
<TextView
android:id="#+id/tv1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="#id/tv2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/myVideoView" />
<TextView
android:id="#+id/tv2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="#id/tv3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/tv1" />
<TextView
android:id="#+id/tv3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="Scrollbale view below my videoView"
android:textColor="#ff00"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/tv2" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
<TextView
android:id="#+id/tv_bottom_view"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="Fixed Bottombar"
android:textColor="#ff00"
android:textStyle="bold"
app:layout_constrainedHeight="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent="0.08"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Let me know if there's any query in comments. For your fixed bottombar TextView, now you can change height percent to whatever you want to change it's height dynamically.

You can use below code for bottom View which remove your Nested LinearLayout :
<TextView
android:id="#+id/bottomView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Fixed Bottombar"
android:textColor="#ff00"
android:background="#00ff00"
android:padding="15dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:textStyle="bold" />

How to get constraintView to fill width space inside scrollView?

I have a constraintLayout inside a scrollView as shown below and the constraintLayout does not fill the screen in terms of width. How can I get it to do so ?
<?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:id="#+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
tools:context=".MainActivity">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/title_leg"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center|center_horizontal|center_vertical"
android:text="#string/leg"
android:textAppearance="#style/TextAppearance.AppCompat.Display1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="parent"
app:layout_constraintVertical_bias="1.0" />
<TextView
android:id="#+id/leg1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginLeft="5dp"
android:layout_marginTop="10dp"
android:text="#string/leg"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
app:layout_constraintStart_toStartOf="#id/title_leg"
app:layout_constraintTop_toBottomOf="#id/title_leg" />
<TextView
android:id="#+id/leg2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="55dp"
android:layout_marginLeft="5dp"
android:layout_marginTop="10dp"
android:text="#string/leg"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
app:layout_constraintStart_toStartOf="#id/leg1"
app:layout_constraintTop_toBottomOf="#id/leg1" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
Here is a screenshot, it does look fine in the Android Studio design tool but not on the phone I use for emulation sake:

If you want exactly like below
then please check this xml.
<?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:id="#+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/title_leg"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center|center_horizontal|center_vertical"
android:text="leg"
android:textAppearance="#style/TextAppearance.AppCompat.Display1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="parent"
app:layout_constraintVertical_bias="1.0" />
<TextView
android:id="#+id/leg1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginLeft="5dp"
android:layout_marginTop="10dp"
android:text="leg"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
app:layout_constraintStart_toStartOf="#id/title_leg"
app:layout_constraintTop_toBottomOf="#id/title_leg" />
<TextView
android:id="#+id/leg2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="55dp"
android:layout_marginLeft="5dp"
android:layout_marginTop="10dp"
android:text="leg"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
app:layout_constraintStart_toStartOf="#id/leg1"
app:layout_constraintTop_toBottomOf="#id/leg1" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>