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.

How to position a textView above recyclerView?

I have a problem related with my xml code. Here is a screenshot from my page: https://i.stack.imgur.com/M6kvA.jpg
In this photo you can see that the Text View which says "Popular Tv Series" is over the recycler view items. I want to position this textView above the recycler view so they dont't cover each other. Here is the xml code for both layout that i am using. I tried playing with the constraints but it just seems that the textView is fixed. Thanks!
fragment_search.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".ui.SearchFragment.SearchFragment">
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/edit_text_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_margin="8dp"
app:endIconMode="clear_text"
app:startIconDrawable="#drawable/ic_search_bottomnav"
android:hint="#string/searchbar_hint"
app:boxStrokeColor="#color/dark_red"
>
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</com.google.android.material.textfield.TextInputLayout>
<View
android:id="#+id/divider"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#color/light_gray"
android:layout_marginTop="20dp"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
app:layout_constraintTop_toBottomOf="#+id/edit_text_layout"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
/>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/search_fragment_recyclerView"
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/text_view_recommended"
android:layout_marginTop="10dp"
/>
<TextView
android:id="#+id/text_view_recommended"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/divider"
android:layout_margin="10dp"
android:text="#string/searchFragment_mostPopular"
android:textStyle="bold"
android:textColor="#color/white"
android:textSize="23sp"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
item_fragmentsearch_popular.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto">
<ImageView
android:id="#+id/movie_image"
android:layout_width="150dp"
android:layout_height="250dp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:scaleType="fitXY"
android:layout_margin="5dp"
/>
</androidx.constraintlayout.widget.ConstraintLayout>

1- Declare textview before recyclerview .
Assign height=0dp to recyclerview, contraints will automatically assign height to it.
Other Note: if you assign match parent width to any view then you dont need to write start to start and end to end contraint.

android Seekbar width "match_parent" not working

I'm creating a seekbar in a dialog fragment, and for some reason, the seekbar width is not taking the whole available width. I guess it has something to do with the dialogfragment somehow.
here is my xml file:
<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="wrap_content">
<SeekBar
android:id="#+id/seekBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="12dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
/>
<ImageButton
android:id="#+id/play_pause"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="12dp"
android:background="#drawable/play_icon"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/seekBar" />
<TextView
android:id="#+id/player_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="12dp"
android:layout_marginEnd="8dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/play_pause"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/seekBar" />
</androidx.constraintlayout.widget.ConstraintLayout>
you can see that the seekbar width is set to "match parent" but it's not working.
Although it's look good in the preview.

Use RelativeLayout as root layout for dialog XML file like this...
<RelativeLayout 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">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<SeekBar
android:id="#+id/seekBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="12dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/play_pause"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="12dp"
android:background="#drawable/play_icon"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/seekBar" />
<TextView
android:id="#+id/player_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="12dp"
android:layout_marginEnd="8dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/play_pause"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/seekBar" />
</androidx.constraintlayout.widget.ConstraintLayout>
</RelativeLayout>

Android Studio Layout is Compressed

I have a problem. Everything just looks compressed but my design layout in my IDE is normal as is. What could be the problem?
First pic: The output of the app. Everything is compressed. I have no idea what happened
Second pic: Everything seems normal
This is my XML Code:
<?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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity"
tools:showIn="#layout/activity_main">
<android.support.constraint.ConstraintLayout
android:layout_width="395dp"
android:layout_height="659dp"
tools:ignore="MissingConstraints"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp">
<Button
android:id="#+id/btn_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/btn_text"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="131dp" />
<Button
android:id="#+id/btn_txt_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableStart="#android:drawable/ic_dialog_email"
android:text="#string/btn_txt_image"
tools:layout_editor_absoluteX="117dp"
tools:layout_editor_absoluteY="131dp" />
<ImageButton
android:id="#+id/ibtn_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="TODO"
android:onClick="doImageButton"
app:srcCompat="#android:drawable/ic_menu_camera"
tools:layout_editor_absoluteX="237dp"
tools:layout_editor_absoluteY="128dp" />
<CheckBox
android:id="#+id/cbx_fruit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/cbx_fruit"
tools:layout_editor_absoluteX="34dp"
tools:layout_editor_absoluteY="221dp" />
<CheckBox
android:id="#+id/cbx_meat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/cbx_meat"
tools:layout_editor_absoluteX="135dp"
tools:layout_editor_absoluteY="221dp" />
<RadioGroup
android:id="#+id/rgrp_level"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:layout_editor_absoluteX="34dp"
tools:layout_editor_absoluteY="283dp">
<RadioButton
android:id="#+id/rbtn_one"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/rbtn_one" />
<RadioButton
android:id="#+id/rbtn_two"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/rbtn_two" />
<RadioButton
android:id="#+id/rbtn_three"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/rbtn_three" />
</RadioGroup>
<RatingBar
android:id="#+id/rbar_star"
android:layout_width="435dp"
android:layout_height="116dp"
tools:layout_editor_absoluteX="-37dp"
tools:layout_editor_absoluteY="454dp" />
<EditText
android:id="#+id/etxt_msg"
android:layout_width="251dp"
android:layout_height="55dp"
android:ems="10"
android:inputType="textPersonName"
android:text="#string/etxt_msg"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="606dp" />
<Button
android:id="#+id/btn_toast"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/btn_toast"
tools:layout_editor_absoluteX="293dp"
tools:layout_editor_absoluteY="612dp" />
<ToggleButton
android:id="#+id/tbtn_power"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tbtn_power"
tools:layout_editor_absoluteX="279dp"
tools:layout_editor_absoluteY="312dp" />
</android.support.constraint.ConstraintLayout>

You need to add constraints to your layout views, heres an example:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/constraintlayout_intro"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimaryDark"
android:paddingLeft="#dimen/spacing_normal"
android:paddingRight="#dimen/spacing_normal">
<br.com.informant.cegonheira.ui.component.CustomViewPager
android:id="#+id/viewpager_intro"
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" />
<androidx.appcompat.widget.AppCompatButton
android:id="#+id/btn_intro"
android:layout_width="200dp"
android:layout_marginTop="360dp"
android:layout_height="#dimen/spacing_big"
android:background="#drawable/background_rounded_green_gradient_button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<me.relex.circleindicator.CircleIndicator
android:id="#+id/circle_indicator_intro"
android:layout_width="match_parent"
android:layout_height="#dimen/spacing_normal"
android:layout_marginTop="460dp"
app:ci_drawable="#drawable/ic_radio_white"
app:ci_drawable_unselected="#drawable/ic_radio_grey"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Notice this in the last view(CircleIndicator):
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
This is what tells where the view is going to be "anchored", otherwise they just "float" like happened to yours.
You can read more about it here: Build a Responsive UI with ConstraintLayout
Congratulations for your first app!

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.