Develop Reference

Multiples imagesView with text in a ScrollView

I'm making a soundbox for me and my friends in android studio.
I've got a simple Scroll view, that I filled up with multiple constraintLayout that each contains 2 imageView with each of having a line of text under it.
The problem is that when I run the app, I only see the 2 first layouts, i've no idea what's going on and this is probably not the good way to do it.
What's the best solution here? Here is the xml code :
<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:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="800dp"
android:background="#353535"
tools:context=".MainActivity">
<ScrollView
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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:id="#+id/buttonStopAll"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/red_perso"
android:text="Stop tout"
android:textColor="#000000" />
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="200dp">
<ImageView
android:id="#+id/idTheoGonfle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/theosouffle" />
<ImageView
android:id="#+id/idChuteCJ"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/cjchute" />
<TextView
android:id="#+id/textTheoGonfle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:width="150dp"
android:background="#FFEB3B"
android:fontFamily="sans-serif-black"
android:gravity="center"
android:text="Théo gonfle"
android:textAllCaps="false"
android:textColor="#000000"
android:textSize="16sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/idTheoGonfle" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:width="150dp"
android:background="#FFEB3B"
android:fontFamily="sans-serif-black"
android:text="TextView"
android:textAlignment="center"
android:textColor="#000000"
android:textSize="16sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/idChuteCJ" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/constraintLayout4"
android:layout_width="match_parent"
android:layout_height="200dp">
<ImageView
android:id="#+id/imageView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_launcher_foreground" />
<ImageView
android:id="#+id/imageView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_launcher_foreground" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/constraintLayout3"
android:layout_width="match_parent"
android:layout_height="200dp">
<ImageView
android:id="#+id/imageView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:srcCompat="#tools:sample/avatars" />
<ImageView
android:id="#+id/imageView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:srcCompat="#tools:sample/avatars" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/constraintLayout2"
android:layout_width="match_parent"
android:layout_height="200dp">
<ImageView
android:id="#+id/imageView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:srcCompat="#tools:sample/avatars" />
<ImageView
android:id="#+id/imageView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:srcCompat="#tools:sample/avatars" />
</androidx.constraintlayout.widget.ConstraintLayout>
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>```

look like you are begginer.
<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:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="800dp"
android:background="#353535"
tools:context=".MainActivity">
look like your problem
android:layout_height="800dp"
You set the fix height. Change it to match_parent.
<androidx.constraintlayout.widget.ConstraintLayout. And change root layout to FrameLayout or remove it.

RecyclerView not scrolling inside NestedScrollView

I'm designing a complex UI that has a NestedScrollView as a parent and inside it, there is a RecyclerView. Now the problem is that I'm not able to scroll the items inside the RecyclerView.
Things I've tried
Replacing ScrollView with NestedScrollView
Enabling android:fillViewport="true"
Disabling NestedScrolling of RecyclerView
<?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=".screens.StudentPreview">
<androidx.cardview.widget.CardView
android:id="#+id/toolbarCV"
android:layout_width="match_parent"
android:layout_height="130dp"
android:translationY="-45dp"
app:cardCornerRadius="30dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#1641A2">
<ImageView
android:id="#+id/menuIV"
android:layout_width="23dp"
android:layout_height="23dp"
android:layout_gravity="center"
android:layout_marginStart="24dp"
android:layout_marginLeft="24dp"
android:src="#drawable/ic_home"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.7" />
<TextView
android:id="#+id/featureName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:fontFamily="#font/poppins_light"
android:text="Student Preview"
android:textColor="#fff"
android:textSize="22sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.75" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.core.widget.NestedScrollView
android:id="#+id/studentPreviewNSV"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="90dp"
android:fillViewport="true"
android:visibility="gone"
app:layout_constraintTop_toTopOf="parent"
tools:visibility="visible">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.cardview.widget.CardView
android:id="#+id/avatarCV"
android:layout_width="60dp"
android:layout_height="60dp"
app:cardBackgroundColor="#color/colorPrimaryDark"
app:cardCornerRadius="40dp"
app:cardElevation="0dp"
app:layout_constraintBottom_toBottomOf="#+id/studentDetailsCL"
app:layout_constraintEnd_toStartOf="#+id/studentDetailsCL"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/studentDetailsCL">
<ImageView
android:id="#+id/avatarIV"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:visibility="gone"
tools:src="#drawable/avatar_sample" />
<TextView
android:id="#+id/nameInitialTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="#font/montserrat"
android:textColor="#FFF"
android:textSize="24sp"
android:textStyle="bold"
android:visibility="gone"
tools:text="AK"
tools:visibility="visible" />
</androidx.cardview.widget.CardView>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/studentDetailsCL"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="#+id/avatarCV"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/studentNameTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="#font/montserrat"
android:textColor="#000"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Akrit Khanna" />
<TextView
android:id="#+id/classNameTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="#font/montserrat"
android:textColor="#000"
android:textSize="15sp"
app:layout_constraintStart_toStartOf="#+id/studentNameTV"
app:layout_constraintTop_toBottomOf="#+id/studentNameTV"
tools:text="Class 8th A" />
<TextView
android:id="#+id/lastLoggedTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dp"
android:fontFamily="#font/raleway"
android:textColor="#000"
android:textSize="15sp"
android:textStyle="bold"
app:layout_constraintStart_toStartOf="#+id/classNameTV"
app:layout_constraintTop_toBottomOf="#+id/classNameTV"
tools:text="Last Logged: 30-01-2020" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.cardview.widget.CardView
android:id="#+id/classEnrollCV"
android:layout_width="0dp"
android:layout_height="120dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="5dp"
android:layout_marginRight="5dp"
app:cardBackgroundColor="#F5F5F5"
app:cardCornerRadius="18dp"
app:cardElevation="3dp"
app:layout_constraintEnd_toStartOf="#+id/courseEnrollCV"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/detailsGL">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/classEnrollCountTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="#font/raleway"
android:textColor="#000"
android:textSize="22sp"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="#+id/classEnrollTVContainerFL"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="1" />
<FrameLayout
android:id="#+id/classEnrollTVContainerFL"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#D0D9EC"
app:layout_constraintBottom_toBottomOf="parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="#font/raleway"
android:text="Classes Enrolled"
android:textColor="#1641A2"
android:textSize="18sp" />
</FrameLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/courseEnrollCV"
android:layout_width="0dp"
android:layout_height="120dp"
android:layout_marginStart="5dp"
android:layout_marginLeft="5dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:cardBackgroundColor="#F5F5F5"
app:cardCornerRadius="18dp"
app:cardElevation="3dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="#+id/classEnrollCV"
app:layout_constraintTop_toTopOf="#+id/detailsGL">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/courseEnrollCountTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="#font/raleway"
android:textColor="#000"
android:textSize="22sp"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="#+id/courseEnrollTVContainerFL"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="1" />
<FrameLayout
android:id="#+id/courseEnrollTVContainerFL"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#D0D9EC"
app:layout_constraintBottom_toBottomOf="parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="#font/raleway"
android:text="Courses Enrolled"
android:textColor="#1641A2"
android:textSize="18sp" />
</FrameLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.constraintlayout.widget.Guideline
android:id="#+id/detailsGL"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_begin="90dp" />
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/reportCL"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:background="#F5F5F5"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/classEnrollCV">
<Spinner
android:id="#+id/classOrTermSpinner"
style="#style/Base.Widget.AppCompat.Spinner.Underlined"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:layout_constraintEnd_toStartOf="#+id/courseSpinner"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Spinner
android:id="#+id/courseSpinner"
style="#style/Base.Widget.AppCompat.Spinner.Underlined"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="#+id/classOrTermSpinner"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/reportRV"
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:layout_constraintTop_toBottomOf="#+id/courseSpinner" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>

Use a NestedScrolView and add this to your RecyclerView:
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(false);
Or this to the XML:
android:nestedScrollingEnabled="false"
Also it might help to add orientation to the recyclerView:
android:orientation="vertical"

Wrap all the views present inside NestedScrollView into a RelativeLayout. For ex,
<androidx.core.widget.NestedScrollView
android:id="#+id/studentPreviewNSV"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="90dp"
android:fillViewport="true"
android:visibility="gone"
app:layout_constraintTop_toTopOf="parent"
tools:visibility="visible">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- your remaining code -->
</androidx.constraintlayout.widget.ConstraintLayout>
</RelativeLayout>
</androidx.core.widget.NestedScrollView>

I managed to fix this problem by adding android:layout_marginBottom="100dp"
I think this was happening because I gave android:layout_marginTop="90dp" to my NestedScrollView and due to that RecyclerView was assuming that all the items are visible on the screen so there is no need for scrolling. (Correct me if I'm wrong)
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/reportRV"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/courseSpinner"
tools:listitem="#layout/report_list_layout"
android:orientation="vertical"
android:layout_marginBottom="100dp"/>

How do I keep a part of my activity fixed and static

I'm making an app that allows a user to stream a video and then also comment / Ask questions below it, what happens is that when the keyboard is opened the video player is scrolled to make room on the screen for the keyboard.
Layout of the Activity :
<LinearLayout 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/root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimaryDark"
android:orientation="vertical"
android:weightSum="2"
tools:context=".LiveVideoBroadcasterActivity">
//player portion starts here
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:isScrollContainer="false"
android:layout_weight="0.7">
<android.opengl.GLSurfaceView
android:id="#+id/cameraPreview_surfaceView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone"
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"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:orientation="horizontal"
android:padding="2dp"
android:visibility="visible"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageButton
android:id="#+id/settings_button"
style="?borderlessButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:adjustViewBounds="true"
android:onClick="showSetResolutionDialog"
android:src="#drawable/ic_settings_white_24dp"
android:tint="#color/colorAccent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/changeCameraButton"
style="?attr/borderlessButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:onClick="changeCamera"
android:src="#drawable/ic_switch_camera_white_24dp"
android:tint="#color/colorAccent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toEndOf="#+id/settings_button"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/stream_live_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|top"
android:layout_margin="8dp"
android:layout_marginEnd="4dp"
android:background="#drawable/rounded_live"
android:padding="5dp"
android:text="#string/live_indicator"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
//player portion ends here
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:orientation="vertical"
android:visibility="visible">
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="#+id/linearLayout3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.core.widget.NestedScrollView
android:id="#+id/scroll"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="50dp"
android:paddingTop="40dp">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/show_chat"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</androidx.core.widget.NestedScrollView>
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<EditText
android:id="#+id/stream_name_edit_text"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:hint="#string/stream_name"
android:textColor="#color/colorAccent"
android:textColorHint="#color/colorSelect" />
<Button
android:id="#+id/toggle_broadcasting"
style="#style/TextAppearance.AppCompat.Widget.Button"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:backgroundTint="#color/colorPrimaryDark"
android:onClick="toggleBroadcasting"
android:text="#string/start"
android:textColor="#color/colorAccent" />
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout3"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#drawable/chatbox"
android:weightSum="3"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent">
<EditText
android:id="#+id/textmassge"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_gravity="bottom"
android:layout_weight="2.5"
android:hint="Enter Message"
android:textColor="#color/colorPrimary"
android:textColorHint="#color/colorPrimary"
android:textSize="20sp"
tools:ignore="Autofill,HardcodedText" />
<androidx.appcompat.widget.AppCompatImageButton
android:id="#+id/send_button"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:background="#android:color/transparent"
android:src="#drawable/ic_arrow_back_black_24dp"
android:tint="#color/colorAccent" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
I tried to keep the whole layout in a constraint layout and a give static height and width but, since I need the app to be responsive enough so as to work across multiple devices , I opted for this approach using linearlayout and weightsum.

How to write a viewPager inside a recyclerView full height

I have a RecyclerView with a ViewPager inside it, which in turn have another recyclerView. The recyclerView inside a ViewPager don't load whole items, but only one, and don't scroll to show the rest of the items
I have tried to set the layout_height of the two recycler view with wrap_content, and also nested it inside a nestedSCrollView, without success.
// First outside recyclerview
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
// cell item with viewPager
<com.google.android.material.tabs.TabLayout
android:id="#+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="50dp" />
<androidx.viewpager.widget.ViewPager
android:id="#+id/viewPager"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
// recyclerView inside viewPager
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
I expect that the outside recyclerView fill the whole height of the items, instead the recycler view inside seams that don't load the whole items but the only one that is visible in the screen, without scroll.
EDIT
fragment__events_detail (layout)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
tools:layout_marginBottom="#dimen/toolbar__height"
tools:layout_marginTop="#dimen/actionbar__height">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
The first cell of the recycler view
<?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:id="#+id/mainContainer"
android:layout_width="match_parent"
android:layout_height="300dp"
android:orientation="vertical">
<!-- img video club -->
<ImageView
android:id="#+id/imgVideoClub"
android:layout_width="0dp"
android:layout_height="300dp"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:srcCompat="#tools:sample/avatars[12]" />
<!-- play icon -->
<ImageView
android:id="#+id/playIcon"
android:layout_width="60dp"
android:layout_height="60dp"
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"
app:srcCompat="#drawable/play_icon" />
<LinearLayout
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_marginTop="8dp"
android:layout_marginRight="8dp"
android:background="#drawable/btn_rounded_orange_outline_red_bg"
android:orientation="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="#+id/imageView8"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="center"
android:layout_marginTop="8dp"
app:srcCompat="#drawable/prohibition_icon" />
<TextView
android:text="Segnala abuso"
android:textColor="#fff"
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
The second cell with a tablayout and a viewpager
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.google.android.material.tabs.TabLayout
android:id="#+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="50dp" />
<androidx.viewpager.widget.ViewPager
android:id="#+id/viewPager"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
The fragment inside first tab of the viewPager with a recyclerView inside
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:layout_marginBottom="#dimen/toolbar__height"
tools:layout_marginTop="#dimen/actionbar__height">
<!-- header -->
<TextView
android:text="Eventi"
style="#style/header_txtStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<!-- separator -->
<View
android:background="#color/separator_background"
android:layout_width="wrap_content"
android:layout_height="1dp"/>
<!-- container events search -->
<LinearLayout
android:orientation="horizontal"
android:paddingLeft="#dimen/main__horizzontalPadding"
android:paddingRight="#dimen/main__horizzontalPadding"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- search icon -->
<ImageView
android:src="#drawable/search_icon"
android:layout_width="20dp"
android:layout_height="30dp" />
<EditText
android:id="#+id/events__home_eventsSearchEditTxt"
android:background="#android:color/transparent"
android:layout_marginLeft="16dp"
android:hint="Cerca eventi"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<!-- separator -->
<View
android:background="#color/separator_background"
android:layout_width="wrap_content"
android:layout_height="3dp"/>
<!-- range time events -->
<androidx.constraintlayout.widget.ConstraintLayout
android:paddingLeft="#dimen/main__horizzontalPadding"
android:paddingRight="#dimen/main__horizzontalPadding"
android:layout_width="match_parent"
android:layout_height="50dp">
<TextView
android:id="#+id/events__home_thisWeekTimeTxt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="Questa settimana"
android:textColor="#color/events__home_itemNotSelected"
android:gravity="center"
android:textSize="#dimen/events__home_rangeTimeTxtSize"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/events__home_nextWeekTimeTxt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="Prossima settimana"
android:textColor="#color/events__home_itemNotSelected"
android:textSize="#dimen/events__home_rangeTimeTxtSize"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintRight_toLeftOf="#id/events__home_calendarRangeTimeContainer"
app:layout_constraintLeft_toRightOf="#id/events__home_thisWeekTimeTxt"
app:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:id="#+id/events__home_calendarRangeTimeContainer"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="match_parent">
<TextView
android:id="#+id/events__home_calendarRangeTimeTxt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:textSize="#dimen/events__home_rangeTimeTxtSize"
android:textColor="#color/events__home_itemNotSelected"
android:gravity="center" />
<ImageButton
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:background="#android:color/transparent"
android:padding="5dp"
android:scaleType="centerCrop"
android:src="#drawable/calendar__icon" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
The items of the second recyclerView
<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:id="#+id/row__events_home_container"
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="10dp"
android:background="#drawable/event__background_rounded"
android:padding="20dp">
<ImageView
android:id="#+id/calendarIcon"
android:layout_width="0dp"
android:layout_height="30dp"
android:layout_marginBottom="16dp"
android:scaleType="fitCenter"
app:layout_constraintBottom_toTopOf="#+id/clockIcon"
app:layout_constraintEnd_toEndOf="#+id/clockIcon"
app:layout_constraintStart_toStartOf="#+id/clockIcon"
app:srcCompat="#drawable/calendar__icon" />
<TextView
android:id="#+id/row__events_home_dateEvent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:text="TextView"
android:textColor="#color/events__home_secondaryTextColor"
app:layout_constraintBottom_toBottomOf="#+id/calendarIcon"
app:layout_constraintStart_toEndOf="#+id/calendarIcon"
app:layout_constraintTop_toTopOf="#+id/calendarIcon" />
<TextView
android:id="#+id/row__events_home_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/row__events_home_category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:textColor="#color/colorPrimary"
app:layout_constraintStart_toStartOf="#+id/row__events_home_title"
app:layout_constraintTop_toBottomOf="#+id/row__events_home_title" />
<ImageView
android:id="#+id/locationIcon"
android:layout_width="0dp"
android:layout_height="30dp"
android:scaleType="fitCenter"
android:adjustViewBounds="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:srcCompat="#drawable/location__icon" />
<TextView
android:id="#+id/row__events_home_locationEventName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:text="TextView"
android:textColor="#color/events__home_secondaryTextColor"
app:layout_constraintBottom_toBottomOf="#+id/locationIcon"
app:layout_constraintStart_toEndOf="#+id/locationIcon"
app:layout_constraintTop_toTopOf="#+id/locationIcon" />
<ImageView
android:id="#+id/clockIcon"
android:layout_width="0dp"
android:layout_height="30dp"
android:layout_marginBottom="16dp"
android:scaleType="fitCenter"
android:adjustViewBounds="true"
app:layout_constraintBottom_toTopOf="#+id/locationIcon"
app:layout_constraintEnd_toEndOf="#+id/locationIcon"
app:layout_constraintStart_toStartOf="#+id/locationIcon"
app:srcCompat="#drawable/clock__icon" />
<TextView
android:id="#+id/row__events_home_timeEvent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:text="TextView"
android:textColor="#color/events__home_secondaryTextColor"
app:layout_constraintBottom_toBottomOf="#+id/clockIcon"
app:layout_constraintStart_toEndOf="#+id/clockIcon"
app:layout_constraintTop_toTopOf="#+id/clockIcon" />
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/row__events_home_interestBtn"
android:layout_width="130dp"
android:layout_height="30dp"
android:background="#drawable/btn_rounded_orange_outline"
android:paddingLeft="10dp"
android:paddingRight="20dp"
app:layout_constraintBottom_toBottomOf="#+id/clockIcon"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/clockIcon">
<ImageView
android:id="#+id/imageView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/interest__events_icon" />
<TextView
android:id="#+id/textView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Mi interessa"
android:textColor="#color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/row__events_home_buyBtn"
android:layout_width="130dp"
android:layout_height="30dp"
android:background="#drawable/btn_rounded_orange_outline"
android:paddingLeft="10dp"
android:paddingRight="20dp"
app:layout_constraintBottom_toBottomOf="#+id/locationIcon"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/locationIcon">
<TextView
android:id="#+id/textView9"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Prenota"
android:textColor="#color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/imageView11"
app:layout_constraintTop_toTopOf="parent"
tools:text="Prenota" />
<ImageView
android:id="#+id/imageView11"
android:layout_width="20dp"
android:layout_height="20dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ticket__events_buy" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

Android Studio Linear Layout Design issue

I am having an issue with designing Android Studio Layout for App. In linear layout, I want to add first two layouts in the first column horizontally and then in the next column, I wish to add that three buttons in horizontally and finally in the last column want to add Listview. Any help would be highly appreciated. As currently, everything falls into one row.
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context=".MainActivity">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<james.view.VideoView
android:id="#+id/remoteVideoView"
android:layout_width="120dp"
android:layout_height="90dp"
/>
<james.view.VideoView
android:id="#+id/localVideoView"
android:layout_width="120dp"
android:layout_height="90dp"
/>
<Button
android:id="#+id/startVideoButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start Call"
/>
<Button
android:id="#+id/stopVideoButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="End Call"
/>
<Button
android:id="#+id/sendmessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="msg"
/>
<ListView
android:id="#+id/errorList"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>
</android.support.constraint.ConstraintLayou
This is how I want my layout to be

If you don't understand Constraints. You can use regular LinearLayout.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
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"
android:orientation="vertical"
android:padding="10dp"
tools:context=".MainActivity"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="90dp"
>
<james.view.VideoView
android:id="#+id/remoteVideoView"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
/>
<james.view.VideoView
android:id="#+id/localVideoView"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_marginLeft="10dp"
android:layout_weight="1"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
>
<Button
android:id="#+id/startVideoButton"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Start Call"/>
<Button
android:id="#+id/stopVideoButton"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="End Call"/>
<Button
android:id="#+id/sendmessage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="msg"/>
</LinearLayout>
<ListView
android:id="#+id/errorList"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="10dp"
android:layout_weight="1"
>
</ListView>
</LinearLayout>
Quite simple!

Solution:
This is exactly how you want, Just copy paste and your job is done:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context=".MainActivity">
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linearLayout2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<james.view.VideoView
android:id="#+id/remoteVideoView"
android:layout_width="120dp"
android:layout_height="90dp"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/localVideoView"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<james.view.VideoView
android:id="#+id/localVideoView"
android:layout_width="120dp"
android:layout_height="90dp"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="#+id/remoteVideoView"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
<LinearLayout
android:id="#+id/linearLayout3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:orientation="horizontal"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/linearLayout2">
<Button
android:id="#+id/startVideoButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Start Call" />
<Button
android:id="#+id/stopVideoButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="End Call" />
<Button
android:id="#+id/sendmessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="msg" />
</LinearLayout>
<ListView
android:id="#+id/errorList"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginEnd="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/linearLayout3">
</ListView>
</android.support.constraint.ConstraintLayout>
Try it. Hope it helps.

This is a sample xml, similar to your image. Since your code uses constraintLayout I have created the xml using constraintLayout instead of linear layout. I have created this from the design screen and not from the text screen. This is the xml `
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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=".MainActivity">
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="49dp"
android:layout_marginStart="49dp"
android:layout_marginTop="32dp"
android:text="Button"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="67dp"
android:layout_marginRight="67dp"
android:layout_marginTop="32dp"
android:text="Button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="193dp"
android:text="Button"
app:layout_constraintEnd_toEndOf="#+id/button"
app:layout_constraintStart_toStartOf="#+id/button"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/button4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="29dp"
android:layout_marginStart="29dp"
android:text="Button"
app:layout_constraintBaseline_toBaselineOf="#+id/button3"
app:layout_constraintStart_toEndOf="#+id/button3" />
<Button
android:id="#+id/button5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="35dp"
android:layout_marginEnd="17dp"
android:layout_marginRight="17dp"
android:layout_marginTop="193dp"
android:text="Button"
app:layout_constraintBottom_toTopOf="#+id/recyclerView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="19dp"
android:layout_marginEnd="22dp"
android:layout_marginLeft="22dp"
android:layout_marginRight="22dp"
android:layout_marginStart="22dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/button5" />
</android.support.constraint.ConstraintLayout>
`
Please see if this helps you. This is not exact screen as per your requirements.