How to position view in this ConstraintLayout - android

I want the ImageView positioned to the far right
look at the picture the first row have a white color ImageView how to make it stick to the right. Using the Android layout inspector the ImageView show to have empty space on both right and left side. Is there some Gravity left something I can use?
Here´s the XML:
<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="wrap_content"
android:layout_margin="5dp"
android:background="?AppTheme.line_box_background_1">
<android.support.constraint.Guideline
android:id="#+id/guideline32"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.74"/>
<android.support.constraint.ConstraintLayout
android:id="#+id/constraintLayout2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="4dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:background="?AppTheme.list_item_background"
app:layout_constraintBottom_toTopOf="#+id/guideline567"
app:layout_constraintEnd_toStartOf="#+id/guideline32"
app:layout_constraintStart_toStartOf="#+id/guideline67"
app:layout_constraintTop_toTopOf="parent"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintTop_creator="1">
<android.support.constraint.Guideline
android:id="#+id/guideline5654"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.5"/>
<ImageView
android:id="#+id/imageView_extra"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="4dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/guideline5654"
app:srcCompat="#drawable/ic_create_port_place"/>
<TextView
android:id="#+id/text_content"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="4dp"
android:layout_marginLeft="4dp"
android:layout_marginRight="4dp"
android:layout_marginTop="4dp"
android:autoSizeTextType="uniform"
android:textColor="?AppTheme.PrimaryTextColor"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="#+id/text_extra"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed"
tools:layout_constraintBottom_creator="1"
tools:layout_constraintLeft_creator="1"
tools:text="some text"/>
<TextView
android:id="#+id/text_extra"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginLeft="4dp"
android:layout_marginRight="4dp"
android:layout_marginTop="4dp"
android:autoSizeTextType="uniform"
android:gravity="center"
android:textColor="?AppTheme.PrimaryTextColor"
app:layout_constraintBottom_toTopOf="#+id/text_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text_content"
tools:layout_constraintBottom_creator="1"
tools:layout_constraintLeft_creator="1"
tools:text="some text"/>
<ProgressBar
android:id="#+id/progressBar"
style="?android:attr/progressBarStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.212"/>
</android.support.constraint.ConstraintLayout>
<ImageView
android:id="#+id/imageView_street_image"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="4dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:contentDescription=""
android:scaleType="fitCenter"
app:layout_constraintBottom_toTopOf="#+id/guideline567"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="#+id/guideline32"
app:layout_constraintTop_toTopOf="parent"/>
<ImageView
android:id="#+id/imageView_google_place"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="4dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:contentDescription=""
app:layout_constraintBottom_toTopOf="#+id/guideline567"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="#+id/guideline32"
app:layout_constraintTop_toBottomOf="#+id/imageView_street_image"
app:srcCompat="#drawable/powered_by_google_on_white"/>
<ImageView
android:id="#+id/imageView_flag"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toTopOf="#+id/guideline521"
app:layout_constraintEnd_toStartOf="#+id/guideline67"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_circle"/>
<android.support.constraint.Guideline
android:id="#+id/guideline67"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.17"/>
<android.support.constraint.Guideline
android:id="#+id/guideline567"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.89"/>
<TextView
android:id="#+id/text_country"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:autoSizeTextType="uniform"
android:gravity="center|top"
android:text="country"
app:layout_constraintBottom_toTopOf="#+id/guideline567"
app:layout_constraintEnd_toStartOf="#+id/guideline67"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/guideline521"
app:layout_constraintVertical_bias="0.050000012"/>
<android.support.constraint.Guideline
android:id="#+id/guideline521"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.4"/>
</android.support.constraint.ConstraintLayout>


When using ConstraintLayout I find it better to preview in blueprint mode. If you do so you'll be able to see the circle indicating the constraints in each element:
TO use it just click and drag the arrow to the view you want this element to me constrained to. In you case you'll use the top and right constraints guides to position the image view to the top right in the screen.
Moreover, to have a parfectly squared image view you should set the width and height to be the sabe, if you have wrap content in one and 0dp in other it won't be perfectly squared but rather rectangular because one of the dimensions is allowed to grow freely.

Related

Scrollview not scrolling with a constraint layout

I am having some issues with scroll view. My scrollview contains a parent constraint layout, which further contains two more constraint layouts, and two buttons. The child constraint layout at the bottom contains a listview, that is populated at runtime. In order to take advantage of the scroll view, I did the following:
Set the height of listview to wrap_content.
Set the height of the second child constraint layout (containing the listview) as wrap_content.
Set the height of the parent constraint layout (containing the two child constraint layout) to wrap_content.
Set the height of the root view, that is the scrollview to be wrap_content.
PS: After the two child constraint layouts, there are two buttons in the parent constraint layout.
But the result is, scrolling does not go beyond the third item in the listview (I have total of 5 items in the list view), also the buttons are not visible (they are out of the screen, below).
If someone could help me in identifying the possible issues, that will be great. Googling wasn't much of a help.
Here is my code: (child items are jumbled up)
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".view.Vote"
tools:showIn="#layout/activity_vote">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.constraint.ConstraintLayout
android:id="#+id/constraintLayout"
android:layout_width="0dp"
android:layout_height="210dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:background="#android:color/white"
android:elevation="20dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<android.support.v7.widget.CardView
android:id="#+id/electionDetailsHeaderCardView"
android:layout_width="0dp"
android:layout_height="75dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:cardBackgroundColor="#FDD700"
app:cardElevation="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/electionDetailsTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:padding="8dp"
android:text="Election detail"
android:textColor="#android:color/white"
android:textSize="24dp" />
</android.support.v7.widget.CardView>
<TextView
android:id="#+id/electionDescriptionTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="16dp"
android:text="Description"
android:textSize="18sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/electionDetailsHeaderCardView" />
<TextView
android:id="#+id/textView4"
android:layout_width="180dp"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:ellipsize="end"
android:maxLines="3"
android:scrollHorizontally="true"
android:text="#string/medium_text"
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/electionDescriptionTextView" />
<!--Reference: https://stackoverflow.com/a/10282253/5394180 (divider)-->
<View
android:id="#+id/view"
android:layout_width="1dp"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:background="#android:color/darker_gray"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toEndOf="#+id/textView4"
app:layout_constraintTop_toBottomOf="#+id/electionDetailsHeaderCardView" />
<TextView
android:id="#+id/importantHeaderTextView"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:text="Important"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="#+id/electionDescriptionTextView"
app:layout_constraintStart_toEndOf="#+id/view"
app:layout_constraintTop_toTopOf="#+id/electionDescriptionTextView" />
<TextView
android:id="#+id/startLabelTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:text="Start:"
android:textSize="12sp"
app:layout_constraintStart_toEndOf="#+id/view"
app:layout_constraintTop_toBottomOf="#+id/importantHeaderTextView" />
<TextView
android:id="#+id/finishLabelTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:text="Finish:"
android:textSize="12sp"
app:layout_constraintStart_toEndOf="#+id/view"
app:layout_constraintTop_toBottomOf="#+id/startLabelTextView" />
<TextView
android:id="#+id/startDateTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:text=" 23/03/2019, 00:00:00"
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="#+id/startLabelTextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/startLabelTextView" />
<TextView
android:id="#+id/finishDateTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:text="30/03/2019, 00:00:00"
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="#+id/finishLabelTextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/finishLabelTextView" />
<TextView
android:id="#+id/statusLabelTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:text="Status:"
android:textSize="12sp"
app:layout_constraintStart_toEndOf="#+id/view"
app:layout_constraintTop_toBottomOf="#+id/finishLabelTextView" />
<TextView
android:id="#+id/textView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:text="Finish"
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="#+id/statusLabelTextView"
app:layout_constraintStart_toEndOf="#+id/statusLabelTextView"
app:layout_constraintTop_toTopOf="#+id/statusLabelTextView" />
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:background="#android:color/white"
android:elevation="20dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/constraintLayout">
<android.support.v7.widget.CardView
android:id="#+id/electionCandidatesHeaderCardView"
android:layout_width="0dp"
android:layout_height="75dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:cardBackgroundColor="#FDD700"
app:cardElevation="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/electionCandidatesHeaderTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:padding="8dp"
android:text="Election candidates"
android:textColor="#android:color/white"
android:textSize="24dp" />
</android.support.v7.widget.CardView>
<ListView
android:id="#+id/candidateListView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/electionCandidatesHeaderCardView" />
<Button
android:id="#+id/cancelButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="8dp"
android:text="Cancel"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/candidateListView" />
<Button
android:id="#+id/voteButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:text="Vote"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/candidateListView" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.NestedScrollView>
I tried googling for this thing. I saw some related results, but I wasn't able to solve my issue following them. The results were pretty specific to the asker's code.

NestedScrollView Having Constraint Layout not scrolling

My xml is composed by one constraint layout. Inside this there are 2 buttons and 1 nested scroll view. Inside the ScrollView there are various elements including recycle view. I would like that the recycle view not scroll but scroll only the nested scroll view. I have disabled the scroll of recycle view in this mode
(recyclerView.setNestedScrollingEnabled(false);)
but the problem is that the nested scroll view not scrolling. Can you help me?
I attach the code below.
The code start in this mode :
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<TextView
android:id="#+id/azzera"
android:layout_width="120dp"
android:layout_height="40dp"
android:layout_marginStart="40dp"
android:layout_marginBottom="28dp"
android:background="#drawable/rounded_4lati"
android:backgroundTint="#color/azzurro"
android:elevation="#dimen/dimen8"
android:paddingTop="#dimen/dimen8"
android:text="#string/azzera"
android:textAlignment="center"
android:textColor="#FFFFFF"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<TextView
android:id="#+id/conferma"
android:layout_width="120dp"
android:layout_height="40dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="28dp"
android:background="#drawable/rounded_4lati"
android:backgroundTint="#color/azzurro"
android:paddingTop="#dimen/dimen8"
android:text="#string/conferma"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:elevation="#dimen/dimen8"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:id="#+id/view1"
android:layout_width="0dp"
android:layout_height="48dp"
android:background="#color/white"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<View
android:id="#+id/view2"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_marginTop="16dp"
android:background="#color/white"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/view1" />
<View
android:id="#+id/view3"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_marginTop="16dp"
android:background="#color/white"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/view2" />
<TextView
android:id="#+id/mostraPreferiti"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:text="#string/mostraPreferiti"
android:textColor="#color/black"
android:textSize="18sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/view3" />
<TextView
android:id="#+id/creditiEcm"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="10dp"
android:text="#string/creditiECM"
android:textColor="#color/black"
android:textSize="18sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/view1" />
<EditText
android:id="#+id/editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:inputType="number"
android:hint="#string/zero"
android:text="#string/editText"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="#+id/creditiEcm"
app:layout_constraintTop_toTopOf="#+id/view1"
android:autofillHints="" />
<Button
android:id="#+id/buttonMeno"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_marginTop="6dp"
android:layout_marginEnd="16dp"
android:background="#drawable/ic_remove_circle_azzurro_24dp"
android:gravity="center"
android:textAlignment="gravity"
android:textColor="#color/azzurro"
android:textSize="24sp"
app:layout_constraintEnd_toStartOf="#+id/buttonPiu"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/buttonPiu"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_marginTop="6dp"
android:layout_marginEnd="32dp"
android:background="#drawable/ic_add_circle_azzurro_24dp"
android:gravity="center"
android:textAlignment="gravity"
android:textColor="#color/azzurro"
android:textSize="24sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/mostraCorsiPassati"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:text="#string/mostraCorsiPassati"
android:textColor="#color/black"
android:textSize="18sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="#+id/view2"
app:layout_constraintTop_toTopOf="#+id/view2" />
<Switch
android:id="#+id/switch_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="32dp"
android:theme="#style/SwitchTheme"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/view2" />
<Switch
android:id="#+id/switch_button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="32dp"
android:theme="#style/SwitchTheme"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/view3" />
<android.support.v7.widget.AppCompatTextView
android:id="#+id/professioni"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="90dp"
android:layout_marginEnd="8dp"
android:text="#string/professione2"
android:textColor="#color/black"
android:textSize="18sp"
android:textStyle="bold"
app:fontFamily="#font/sanfrancisco"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/mostraCorsiPassati" />
<SearchView
android:id="#+id/searchBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="4dp"
android:background="#fff"
android:elevation="2dp"
app:layout_constraintHorizontal_bias="0.557"
app:layout_constraintLeft_toRightOf="parent"
app:layout_constraintRight_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="#+id/professioni"
app:queryHint="Cerca..">
</SearchView>
<android.support.v7.widget.RecyclerView
android:id="#+id/listProfessioni"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/searchBar"
android:orientation="vertical"
>
</android.support.v7.widget.RecyclerView>
<TextView
android:id="#+id/professioniNonDisponibili"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:text="#string/professioniNonDisponibili"
android:textAlignment="center"
android:textColor="#color/gray"
android:textSize="18sp"
app:autoSizeMaxTextSize="#dimen/dimen20"
app:autoSizeMinTextSize="#dimen/dimen12"
app:autoSizeTextType="uniform"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/error" />
<ImageView
android:id="#+id/error"
android:layout_width="#dimen/dimen80"
android:layout_height="#dimen/dimen80"
android:layout_marginStart="8dp"
android:layout_marginTop="32dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:background="#drawable/ic_error_outline_gray_24dp"
android:contentDescription="#string/TODO"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/searchBar"
app:layout_constraintVertical_bias="0.105" />
<ProgressBar
android:id="#+id/progress"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_marginStart="8dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:alpha="1"
android:minWidth="80dp"
android:minHeight="80dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/searchBar"
app:layout_constraintVertical_bias="0.168" />
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.NestedScrollView>

As i answered in comments
For Someone other facing same problem. This might help.
For some reasons ScrollView doesn't scroll when having ConstraintLayout inside it.
For Workaround we can use LinearLayout or RelativeLayoutinstead of ConstraintLayout inside ScrollView. OR
As OP does put the ConstraintLayout inside Linear or Relative Layout does the trick.

According to Ali Ahmed's answer, a ScrollView doesn't scroll if you have a ConstraintLayout inside it. Well that's not true. I have been using ConstraintLayout inside ScrollView and everything works perfectly fine. Well the problem with the code that you posted is that you are using 0dpas the layout_height of your RecyclerView. 0dp means match_parent. You should be using wrap_content as your layout_height. So that the RecyclerView expands its height according to the elements in it. Doing so will make your code work fine.

Using Constraint Layout for Custom views

I am using the drag and drop functionality in the layout editor to try and get 4 image buttons aligned in a kite shape. This is the layout I am trying to achieve, currently using ImageButton but I will change to the circular image view to suit the layout later.
Can anyone help me to achieve this. Please find my XML below:
<android.support.constraint.ConstraintLayout
android:id="#+id/ongoing_call_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="#dimen/activity_padding"
android:layout_below="#id/contact_number_tv"
android:layout_above="#id/calculator_layout">
<ImageButton
android:id="#+id/home_imgBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="120dp"
android:src="#android:drawable/btn_star"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/not_billable_imgBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="104dp"
android:src="#android:drawable/btn_star"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/billable_imgBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/btn_star"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toEndOf="#+id/not_billable_imgBtn"
tools:layout_editor_absoluteY="105dp" />
<ImageButton
android:id="#+id/decide_later_imgBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="120dp"
android:src="#android:drawable/btn_star"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
</android.support.constraint.ConstraintLayout>

Try this buddy, and make your own adjustments.
<android.support.constraint.ConstraintLayout
android:id="#+id/ongoing_call_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="#dimen/activity_padding"
android:layout_below="#id/contact_number_tv"
android:layout_above="#id/calculator_layout">
<ImageButton
android:id="#+id/home_imgBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:src="#android:drawable/btn_star"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.32"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/not_billable_imgBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="24dp"
android:src="#android:drawable/btn_star"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/billable_imgBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:src="#android:drawable/btn_star"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.66"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/decide_later_imgBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="60dp"
android:layout_marginBottom="24dp"
android:src="#android:drawable/btn_star"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/not_billable_imgBtn" />
</android.support.constraint.ConstraintLayout>
See the example image
But perhaps your real problem is that the constrainLayout is not your root element, and you should set a fixed height instead of android:layout_height="wrap_content"

View is not visible in Constraint layout

In the Constraint layout I have a Button and on top of it is an Image View(id==R.id.imageView) which is aligned center-right area of the Button.The background of the Image View is a white colored right arrow. In design view and in my device the Image View is not displayed. I cleaned and build the project but the problem persists.In the Image below the blue rectangular portion is then area where the Image should be displayed.Please provide a solution for this...
Design Preview:
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">
<TextView
android:id="#+id/head"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="#dimen/ph_verify_lbl_mrgn"
android:text="#string/verify_your_phone_number"
android:textColor="#bb2b67"
android:textSize="#dimen/ph_verify_head_tsxtsze"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="4dp"
android:text="#string/lorem_ipsum_lorem_ipsum"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/head" />
<EditText
android:id="#+id/editText"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:hint="#string/ph_hint"
android:inputType="number"
android:paddingTop="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView" />
<ImageView
android:id="#+id/imageView"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:background="#drawable/arrow"
app:layout_constraintBottom_toBottomOf="#+id/button"
app:layout_constraintEnd_toEndOf="#+id/button"
app:layout_constraintHorizontal_bias="0.909"
app:layout_constraintStart_toStartOf="#+id/button"
app:layout_constraintTop_toTopOf="#+id/button"
app:layout_constraintVertical_bias="0.571" />
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="89dp"
android:layout_marginTop="16dp"
android:background="#drawable/button_bg"
android:text="#string/next"
android:textColor="#ffffff"
android:textSize="22sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/editText"
app:layout_constraintVertical_bias="0.25" />
</android.support.constraint.ConstraintLayout>

Place the ImageView tag below the Button tag.
Since you have provided match parent to the button and set the constraints to fill horizontally, the ImageView is being overlapped.
You can test it by keeping property of Button clickable="false" and put a click listener on the ImageView
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="89dp"
android:layout_marginTop="16dp"
android:background="#drawable/button_bg"
android:text="#string/next"
android:textColor="#ffffff"
android:textSize="22sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/editText"
app:layout_constraintVertical_bias="0.25" />
<ImageView
android:id="#+id/imageView"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:background="#drawable/arrow"
app:layout_constraintBottom_toBottomOf="#+id/button"
app:layout_constraintEnd_toEndOf="#+id/button"
app:layout_constraintHorizontal_bias="0.909"
app:layout_constraintStart_toStartOf="#+id/button"
app:layout_constraintTop_toTopOf="#+id/button"
app:layout_constraintVertical_bias="0.571" />
UPDATE
Also if this does not work, put an elevation to the ImageView
android:elevation="2dp"

Constraint layout leaving space On top

I have a fragment containing a layout
<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="wrap_content"
android:fitsSystemWindows="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp"
tools:context="tech.pkg.name.fragments.ReportFragment">
<android.support.constraint.ConstraintLayout
android:id="#+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimaryDark"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<Spinner
android:id="#+id/typeSlector"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/linearLayout2" />
<android.support.constraint.ConstraintLayout
android:id="#+id/linearLayout2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="32dp"
android:background="#drawable/android_date_bgd"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/fromTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="#string/from"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/fromDateTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:drawablePadding="5dp"
android:padding="5dp"
android:text="#string/dd_mm_yy"
android:textStyle="bold"
app:layout_constraintBaseline_toBaselineOf="#+id/fromTextView"
app:layout_constraintEnd_toStartOf="#+id/view9"
app:layout_constraintHorizontal_chainStyle="spread_inside"
app:layout_constraintStart_toEndOf="#+id/fromTextView"
app:layout_constraintTop_toTopOf="#+id/fromTextView" />
<View
android:id="#+id/view9"
android:layout_width="1dp"
android:layout_height="0dp"
android:layout_marginBottom="4dp"
android:layout_marginTop="4dp"
android:background="#android:color/black"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/toTextView"
app:layout_constraintStart_toEndOf="#+id/fromDateTextView"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="#+id/toTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/to"
android:textStyle="bold"
app:layout_constraintBaseline_toBaselineOf="#+id/fromDateTextView"
app:layout_constraintEnd_toStartOf="#+id/toDateTextView"
app:layout_constraintStart_toEndOf="#+id/view9" />
<TextView
android:id="#+id/toDateTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:drawablePadding="5dp"
android:padding="5dp"
android:text="#string/dd_mm_yy"
android:textStyle="bold"
app:layout_constraintBaseline_toBaselineOf="#+id/toTextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/toTextView" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
<RadioGroup
android:id="#+id/radioGroup"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:orientation="horizontal"
android:padding="10dp"
android:theme="#style/AppTheme.RadioButton"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView8"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1">
<RadioButton
android:id="#+id/mobileRadioButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="20dp"
android:layout_weight="0.20"
android:checked="true"
android:text="Mobile"
android:textSize="18sp" />
<RadioButton
android:id="#+id/DTHradioButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="0.14"
android:text="DTH"
android:textSize="18sp" />
</RadioGroup>
<Button
android:id="#+id/button_view_report"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:background="#drawable/button_bgd"
android:text="#string/submit"
android:textColor="#color/colorAccent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/view5"
app:layout_constraintVertical_bias="0.0" />
<View
android:id="#+id/view5"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginEnd="10dp"
android:layout_marginRight="15dp"
android:background="#color/colorEditTextLine"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/radioGroup" />
<CheckBox
android:id="#+id/downloadCheck"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:theme="#style/AppTheme.Checkbox"
app:layout_constraintHorizontal_bias="0.088"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/constraintLayout" />
<TextView
android:id="#+id/textView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:text="#string/download"
app:layout_constraintBaseline_toBaselineOf="#+id/downloadCheck"
app:layout_constraintHorizontal_bias="0.02"
app:layout_constraintLeft_toRightOf="#+id/downloadCheck"
app:layout_constraintRight_toRightOf="parent" />
</android.support.constraint.ConstraintLayout>
it is containing in
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/fragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
But in the layout editor it is showing
How can I remove the spacing above?

The problem is with your Activity where you had inflated the Fragment. Actually, i tried it on My system and I'm Getting Proper result.
Check Your Activity's Layout where the FrameLayout is Used.
2nd Possbility
Check your May be Your Theme is Changing this . Check all the possibilities

Try the following code Replacing the ConstraintLayout after the Spinner
<android.support.constraint.ConstraintLayout
android:id="#+id/linearLayout2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="#drawable/android_date_bgd"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">

What happened to me was smiliar, a space on top that did not show in the editor.
The problem was not in the main layout file I was focusing on, I was displaying some fragments thru a viewpager and the margins on the editor for the pager were 0 so the editor preview did not showed a space on top. However the fragments that were being created/shown had of course a different layout file and in that layout there was a huge space on top because I erroneously thought centering the layout vertically was a good idea for some reason (mainly because I code at night before bed and sometimes im too tired lol). Since the layout height for the viewpager did not match the dimensions of the fragment I had some weird behaviors trying to position the elements of the main layout file.

I was facing a similar problem. By looking at the code snippet in the question I saw the similarity that we both have android:fitsSystemWindows set to True. By removing this android:fitsSystemWindows attribute, my space at the top was removed.

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