Constraint Layout not working properly despite adding constraints - android

I am using Constraint Layout in a list item and having difficulties in getting it to work properly when the code is compiled, though it is coming up properly in the preview pane. I can use Relative Layout but still want to know why it does not work because I am facing this problematic behaviour in many other cases.
In the image below, this is how the layout is, with all the children
constrained as desired.
For the sake of clarity, below image shows each child's constraints individually
This is how it renders in a recycler view :
List item scrolled down :
Source code for this layout :
<?xml version="1.0" encoding="utf-8"?>
<layout 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.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_recent_activity">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/civ_user_avatar"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="16dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:src="#color/primary"/>
<TextView
android:id="#+id/tv_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:text="TextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/civ_user_avatar" />
<TextView
android:id="#+id/tv_candidate_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="24dp"
android:layout_marginLeft="24dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:text="TextView"
android:textAppearance="#style/TextTitle"
app:layout_constraintBottom_toTopOf="#+id/tv_candidate_email"
app:layout_constraintEnd_toStartOf="#+id/tv_status"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toEndOf="#+id/civ_user_avatar"
app:layout_constraintTop_toTopOf="#+id/civ_user_avatar" />
<TextView
android:id="#+id/tv_candidate_email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:text="TextView"
android:textAppearance="#style/TextSecondary"
app:layout_constraintEnd_toStartOf="#+id/tv_status"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="#+id/tv_candidate_name"
app:layout_constraintTop_toBottomOf="#+id/tv_candidate_name" />
<TextView
android:id="#+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:text="Assessment : "
android:textColor="#color/black"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="#+id/tv_candidate_name"
app:layout_constraintTop_toBottomOf="#+id/tv_candidate_email" />
<TextView
android:id="#+id/tv_assessment_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:text="TextView"
android:textAppearance="#style/TextTitleBold"
app:layout_constraintBottom_toBottomOf="#+id/textView7"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toEndOf="#+id/textView7"
app:layout_constraintTop_toTopOf="#+id/textView7" />
</android.support.constraint.ConstraintLayout>
</layout>
Is there an explanation for this behavior so that I can understand how Constraint layout is actually working?
Update : After removing bottom constraints of Imageview and textView7constraint, the layout looks as below :


For all of your views instead of match_parent
use 0dp in the xml or select fill_parent in the design view


Please try below layout :
<?xml version="1.0" encoding="utf-8"?>
<layout 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.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/civ_user_avatar"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="16dp"
android:src="#color/primary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/tv_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:text="TextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/civ_user_avatar" />
<TextView
android:id="#+id/tv_candidate_name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="24dp"
android:layout_marginLeft="24dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:text="TextView"
app:layout_constraintEnd_toStartOf="#+id/tv_status"
app:layout_constraintStart_toEndOf="#+id/civ_user_avatar"
app:layout_constraintTop_toTopOf="#+id/civ_user_avatar" />
<TextView
android:id="#+id/tv_candidate_email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:text="TextView"
android:textAppearance="#style/TextSecondary"
app:layout_constraintEnd_toStartOf="#+id/tv_status"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="#+id/tv_candidate_name"
app:layout_constraintTop_toBottomOf="#+id/tv_candidate_name" />
<TextView
android:id="#+id/textView7"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:maxLines="1"
android:text="Assessment : "
android:textColor="#color/black"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="#+id/tv_candidate_name"
app:layout_constraintTop_toBottomOf="#+id/tv_candidate_email" />
<TextView
android:id="#+id/tv_assessment_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="#+id/textView7"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toEndOf="#+id/textView7"
app:layout_constraintTop_toTopOf="#+id/textView7" />
</android.support.constraint.ConstraintLayout>
</layout>


Try using Guidelines, for example horizontal, and you can fit all the view more easy there. If you combine it with 2 or 3 verticals (guidelines) it will be more easy to arrive it.

Related

Using Constraint Layout but still layout gets messed up

I'm trying to create a layout for my recycler view. I thought the best would be using a constraint layout for the activity. It renders correctly in the preview window but gets distorted while running the application. I tried using constraint layout before but I got the same problem please help. I posted both the code and image file of the layout
this is after running the application
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/levelback">
<ImageView
android:id="#+id/userface"
android:layout_width="76dp"
android:layout_height="76dp"
android:contentDescription="#string/player2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.004"
app:srcCompat="#drawable/ic_angry" />
<TextView
android:id="#+id/username"
android:layout_width="wrap_content"
android:layout_height="27dp"
android:layout_marginEnd="212dp"
android:text="#string/player2"
android:textColor="#android:color/background_light"
android:textSize="25sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.014" />
<TextView
android:id="#+id/usedesc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="descryption"
android:textColor="#android:color/darker_gray"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.324"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.06" />
</androidx.constraintlayout.widget.ConstraintLayout>

There you go:
<ImageView
android:id="#+id/userface"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:contentDescription="#string/player2"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_angry" />
<TextView
android:id="#+id/username"
android:layout_width="wrap_content"
android:layout_height="27dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="player2"
android:textColor="#android:color/background_light"
android:textSize="25sp"
app:layout_constraintStart_toEndOf="#+id/userface"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/usedesc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="descryption"
android:textColor="#android:color/darker_gray"
app:layout_constraintStart_toEndOf="#+id/userface"
app:layout_constraintTop_toBottomOf="#id/username" />
Put it inside ConstraintLayout.
Change your Strings and manipulate with margins if you need to.

Android GUI looks different when using margin and padding

I'm a beginner on Android, but my question require a little bit knowledge in UI and not in programming.
I have an xml code, i have their some views but for this question only two components are relevant.
The component is a ScrollView "father" that has only one "son" that is a TextView.
When setting padding in ScrollView, if the text inside the TextView is long, first line of TextView is a little bit truncated (although i am using padding). But on the other hand, when using margin_layout text is seen fine. I read a lot on the difference between margin and padding and from what i have understand setting padding inside father should give the same affect as setting margin inside son. I emphasize that i'm using only one son.
Code with margin (where text is fine):
<?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:background="#color/colorPrimary"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="76dp"
android:layout_marginEnd="8dp"
android:fontFamily="#font/chewy"
android:text="#string/title"
android:textSize="36sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.v7.widget.CardView
android:id="#+id/cardView"
android:layout_width="300dp"
android:layout_height="80dp"
android:layout_marginStart="8dp"
android:layout_marginTop="68dp"
android:layout_marginEnd="8dp"
app:cardCornerRadius="5dp"
app:cardElevation="7dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="#+id/question_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_margin="8dp"
android:text="Hello There this is where we are going to add something..."
android:textSize="18sp" />
</ScrollView>
</android.support.v7.widget.CardView>
<Button
android:id="#+id/true_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="48dp"
android:layout_marginTop="8dp"
android:background="#color/colorAccent"
android:text="#string/true_title"
app:layout_constraintStart_toEndOf="#+id/prev_button"
app:layout_constraintTop_toBottomOf="#+id/cardView" />
<Button
android:id="#+id/false_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="#color/colorAccent"
android:text="#string/false_title"
app:layout_constraintEnd_toStartOf="#+id/next_button"
app:layout_constraintStart_toEndOf="#+id/true_button"
app:layout_constraintTop_toBottomOf="#+id/cardView" />
<ImageButton
android:id="#+id/prev_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:background="#color/colorAccent"
android:contentDescription="#string/previous_button"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardView"
app:srcCompat="#android:drawable/ic_media_previous" />
<ImageButton
android:id="#+id/next_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="#color/colorAccent"
android:contentDescription="#string/next_button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardView"
app:srcCompat="#android:drawable/ic_media_next" />
<TextView
android:id="#+id/counter_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:fontFamily="#font/chewy"
android:text="#string/counter_questions"
app:layout_constraintBottom_toTopOf="#+id/cardView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView" />
</android.support.constraint.ConstraintLayout>
Code with padding (where first line is truncated)
<?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:background="#color/colorPrimary"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="76dp"
android:layout_marginEnd="8dp"
android:fontFamily="#font/chewy"
android:text="#string/title"
android:textSize="36sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.v7.widget.CardView
android:id="#+id/cardView"
android:layout_width="300dp"
android:layout_height="80dp"
android:layout_marginStart="8dp"
android:layout_marginTop="68dp"
android:layout_marginEnd="8dp"
app:cardCornerRadius="5dp"
app:cardElevation="7dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="8dp"
>
<TextView
android:id="#+id/question_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="Hello There this is where we are going to add something..."
android:textSize="18sp" />
</ScrollView>
</android.support.v7.widget.CardView>
<Button
android:id="#+id/true_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="48dp"
android:layout_marginTop="8dp"
android:background="#color/colorAccent"
android:text="#string/true_title"
app:layout_constraintStart_toEndOf="#+id/prev_button"
app:layout_constraintTop_toBottomOf="#+id/cardView" />
<Button
android:id="#+id/false_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="#color/colorAccent"
android:text="#string/false_title"
app:layout_constraintEnd_toStartOf="#+id/next_button"
app:layout_constraintStart_toEndOf="#+id/true_button"
app:layout_constraintTop_toBottomOf="#+id/cardView" />
<ImageButton
android:id="#+id/prev_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:background="#color/colorAccent"
android:contentDescription="#string/previous_button"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardView"
app:srcCompat="#android:drawable/ic_media_previous" />
<ImageButton
android:id="#+id/next_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="#color/colorAccent"
android:contentDescription="#string/next_button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardView"
app:srcCompat="#android:drawable/ic_media_next" />
<TextView
android:id="#+id/counter_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:fontFamily="#font/chewy"
android:text="#string/counter_questions"
app:layout_constraintBottom_toTopOf="#+id/cardView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView" />
</android.support.constraint.ConstraintLayout>
In addition, putting padding inside CardLayout make thins to be even bad than when adding padding inside the ScrollView
Can someone explain me the reason?

It seems that the difference related to ScrollView odd behavior. I fixed the issue by setting android:fillViewport="true", and removing padding and margin_layout

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.

how to prevent imageView from shrinking beyond the size of its containing items in constraint layout?

I am designing a constraint layout for an android application and I want the layout to look something like this:
The problem is that as soon as I constraint the height of the image views, they shrink until there is nothing left. I want the image views to have at least as much height as the text views they surround, plus a little padding. How can I do that without specifying an absolute height for the image views?
Here is my XML code:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimaryLightBlue">
<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">
<ImageView
android:id="#+id/imageView12"
android:layout_width="0dp"
android:layout_height="125dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView13"
app:srcCompat="#drawable/button_round_bg_off" />
<ImageView
android:id="#+id/imageView14"
android:layout_width="0dp"
android:layout_height="125dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView12"
app:srcCompat="#drawable/button_round_bg_off" />
<ImageView
android:id="#+id/imageView13"
android:layout_width="0dp"
android:layout_height="125dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/button_round_bg_off" />
<TextView
android:id="#+id/textView15"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="#+id/imageView14"
app:layout_constraintEnd_toEndOf="#+id/imageView14"
app:layout_constraintStart_toStartOf="#+id/imageView14"
app:layout_constraintTop_toTopOf="#+id/imageView14" />
<TextView
android:id="#+id/textView17"
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:text="TextView"
app:layout_constraintBottom_toBottomOf="#+id/imageView12"
app:layout_constraintEnd_toEndOf="#+id/imageView12"
app:layout_constraintStart_toStartOf="#+id/imageView12"
app:layout_constraintTop_toTopOf="#+id/imageView12" />
<TextView
android:id="#+id/textView16"
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:text="TextView"
app:layout_constraintBottom_toBottomOf="#+id/imageView13"
app:layout_constraintEnd_toEndOf="#+id/imageView13"
app:layout_constraintStart_toStartOf="#+id/imageView13"
app:layout_constraintTop_toTopOf="#+id/imageView13" />
</android.support.constraint.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/holo_blue_bright">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/imageView12"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:contentDescription="Image description."
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView13"
app:layout_constraintBottom_toTopOf="#id/imageView14" />
<ImageView
android:id="#+id/imageView14"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:contentDescription="Image description."
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView12"
app:layout_constraintBottom_toBottomOf="parent"
app:srcCompat="#android:drawable/alert_dark_frame" />
<ImageView
android:id="#+id/imageView13"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:contentDescription="Image description."
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toTopOf="#id/imageView12"
app:srcCompat="#android:drawable/alert_dark_frame" />
<TextView
android:id="#+id/textView15"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:padding="15dp"
android:text="TextView"
android:textColor="#android:color/white"
app:layout_constraintBottom_toBottomOf="#+id/imageView14"
app:layout_constraintEnd_toEndOf="#+id/imageView14"
app:layout_constraintStart_toStartOf="#+id/imageView14"
app:layout_constraintTop_toTopOf="#+id/imageView14" />
<TextView
android:id="#+id/textView17"
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:padding="15dp"
android:text="TextView"
android:textColor="#android:color/white"
app:layout_constraintBottom_toBottomOf="#+id/imageView12"
app:layout_constraintEnd_toEndOf="#+id/imageView12"
app:layout_constraintStart_toStartOf="#+id/imageView12"
app:layout_constraintTop_toTopOf="#+id/imageView12" />
<TextView
android:id="#+id/textView16"
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:padding="15dp"
android:text="TextView"
android:textColor="#android:color/white"
app:layout_constraintBottom_toBottomOf="#+id/imageView13"
app:layout_constraintEnd_toEndOf="#+id/imageView13"
app:layout_constraintStart_toStartOf="#+id/imageView13"
app:layout_constraintTop_toTopOf="#+id/imageView13" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
Use the above code and save the "Image description." in the strings.xml file and as you can notice that the imageView12 is not having app:srcCompat attribute in which you are specifying your drawable but still all the three image views are having the same distribution in terms of space occupied by them. Also, I have given padding of "15dp" to all the three text views which you may manage as per your requirement. Hope this helps you.

There is one magical attribute in ConstraintLayout.
app:layout_constraintHeight_min="wrap"
And I think you have constraint reversed. ImageView should constraintTo the TextView.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#2222">
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/textView16"
android:layout_width="0dp"
android:layout_height="60dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/imageView13"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/imageView13"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:padding="2dp"
app:layout_constraintBottom_toBottomOf="#+id/textView16"
app:layout_constraintEnd_toStartOf="#+id/textView16"
app:layout_constraintHeight_min="wrap"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/textView16"
app:srcCompat="#drawable/ic_message_check" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
This will not allow ImageView's height to go below "wrap_content" value. But if you chose this you will have to make sure height of the TextView will be at least that of "wrap" of the ImageView.
But this should be the only caveat. ImageView will automatically resize based on height of the TextView(and wrap of the width)

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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