Develop Reference

Constraint layout in Custom Dialog problem

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

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

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

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

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

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

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

RecyclerView item get deforme as keyboard pop up

I an activity I am using a dialog (which extend DialogFragment), Dialog contains a recycler view (w: match parent,h:200dp) and below recycler view an edit text and button, as soon as edit text is in focus and keyboard pops up the item in recycler view get deformed. dialog root view (card view) has w:match_parent h: wrap_content and list item root view (constraint layout) have w:match_parent h:wrap_content
enter image description here
Dialog :
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView 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"
app:cardBackgroundColor="#color/white"
app:cardCornerRadius="4dp"
app:cardElevation="0dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minWidth="350dp"
android:orientation="vertical">
<TextView
android:id="#+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:layout_marginStart="20dp"
android:fontFamily="#font/opensans_bold"
android:gravity="center_vertical"
android:text="#string/label_add_remark"
android:textColor="#color/colorPrimary"
android:textSize="16sp" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#color/windowBackground" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rv_revisit_remarks"
android:layout_width="match_parent"
android:layout_height="#dimen/revisit_rv_size"
android:visibility="gone"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
tools:itemCount="6"
tools:listitem="#layout/layout_remark_item" />
<LinearLayout
android:id="#+id/ll_add_comment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:background="#drawable/rectangle_grey_border"
android:minWidth="250dp"
android:orientation="horizontal"
android:weightSum="2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/rv_remarks">
<EditText
android:id="#+id/et_add_comment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_margin="10dp"
android:layout_weight="2"
android:background="#null"
android:hint="#string/add_your_comment"
android:inputType="textMultiLine|textCapSentences"
android:minHeight="40dp"
android:paddingStart="10dp"
android:paddingEnd="10dp"
android:textColor="#color/primaryTextColor"
android:textColorHint="#color/text_color_light"
android:textSize="12sp" />
</LinearLayout>
<com.google.android.material.button.MaterialButton
android:id="#+id/button_submit"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:layout_marginBottom="20dp"
android:backgroundTint="#color/colorPrimary"
android:fontFamily="#font/opensans_bold"
android:text="#string/submit"
android:textAllCaps="false"
android:textColor="#color/white"
android:translationZ="0dp"
app:cornerRadius="4dp"
app:elevation="0dp" />
</LinearLayout>
</androidx.cardview.widget.CardView>
List Item:
<?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="wrap_content"
android:background="?attr/selectableItemBackground"
android:paddingTop="10dp"
android:paddingBottom="10dp">
<ImageView
android:id="#+id/iv_profile_image"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginStart="20dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:src="#drawable/image_member_sample" />
<TextView
android:id="#+id/tv_name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:ellipsize="end"
android:fontFamily="#font/opensans_semibold"
android:lines="1"
android:textColor="#color/text_color_dark"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/iv_profile_image"
app:layout_constraintTop_toTopOf="#id/iv_profile_image"
tools:text="BIna Antony Mari Kurian Paulose" />
<TextView
android:id="#+id/tv_comment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="4dp"
android:layout_marginEnd="20dp"
android:fontFamily="#font/opensans_regular"
android:textColor="#color/text_color_dark"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="#id/tv_name"
app:layout_constraintTop_toBottomOf="#id/tv_name"
tools:text="#tools:sample/lorem" />
</androidx.constraintlayout.widget.ConstraintLayout>

try this:
dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);

Constraint layout with wrap_content clips it's content

Recently I've bumped into a strange ConstraintLayout behavior. What I tried to do was a simple layout with ImageView, Button and a TextView. Here's the code:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:contentDescription="#null"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:paddingBottom="10dp"
android:paddingEnd="20dp"
android:paddingStart="20dp"
android:text="TEST TEXT"
android:paddingTop="20dp"
app:layout_constraintStart_toStartOf="#id/image"
app:layout_constraintTop_toBottomOf="#+id/button" />
<android.support.v4.widget.Space
android:id="#+id/marginSpacer"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="10dp"
app:layout_constraintBottom_toBottomOf="#id/image" />
<Button
android:id="#id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:background="#drawable/button_bg"
android:text="BUTTON"
app:layout_constraintTop_toBottomOf="#id/marginSpacer" />
</android.support.constraint.ConstraintLayout>
The ImageView content is loaded using Glide like this:
Glide.with(this).load("https://homepages.cae.wisc.edu/~ece533/images/monarch.png").into(imageView);
Here is how I wanted it to look like:
And here's what I actually got:
My intent was to make the text align relative to the button, not the image, how do I make this happen? Why did the ConstraintLayout clip itself to the ImageView? On the other hand, if I align the text relative to the image everything works great and nothing is clipped.
The full source is available here:
https://github.com/satorikomeiji/ConstraintLayoutBug

Use this for your Button:
#+id/button
instead of
android:id="#id/button"
You'll be able to design urself.
I would suggest you to add loading image:
.placeholder(R.drawable.ic_error_black_48px)
My Layout:
<?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:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteY="81dp">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:contentDescription="#null" />
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginTop="8dp"
android:paddingBottom="10dp"
android:paddingEnd="20dp"
android:paddingStart="20dp"
android:paddingTop="20dp"
android:text="TEST TEXT"
app:layout_constraintStart_toStartOf="#+id/ButtonLayout"
app:layout_constraintTop_toBottomOf="#+id/ButtonLayout" />
<android.support.constraint.ConstraintLayout
android:id="#+id/ButtonLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="#+id/image"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/image">
<View
android:id="#+id/dummyView"
android:layout_width="match_parent"
android:layout_height="15dp" />
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:background="#drawable/button_bg"
android:text="BUTTON"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/dummyView" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
Preview:

You need to align something to the bottom of the parent
Align TEST TEXT TextView bottom to the bottom of parent like this:
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:paddingBottom="10dp"
android:paddingEnd="20dp"
android:paddingStart="20dp"
android:text="TEST TEXT"
android:paddingTop="20dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="#id/image"
app:layout_constraintTop_toBottomOf="#+id/button" />
And add plus sign in button id
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:background="#drawable/button_bg"
android:text="BUTTON"
app:layout_constraintTop_toBottomOf="#id/marginSpacer" />

Try this :
<?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:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteY="81dp">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="fitXY"
android:src="#drawable/ic_launcher_background"
android:adjustViewBounds="true"
android:contentDescription="#null" />
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginTop="8dp"
android:paddingBottom="10dp"
android:paddingEnd="20dp"
android:paddingStart="20dp"
android:paddingTop="20dp"
android:text="TEST TEXT"
app:layout_constraintStart_toStartOf="#+id/ButtonLayout"
app:layout_constraintTop_toBottomOf="#+id/ButtonLayout" />
<android.support.constraint.ConstraintLayout
android:id="#+id/ButtonLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="#+id/image"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/image">
<View
android:id="#+id/dummyView"
android:layout_width="match_parent"
android:layout_height="15dp" />
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:text="BUTTON"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/dummyView" />
</android.support.constraint.ConstraintLayout>

ConstraintLayout sub textview cut off text

I layout the cell of RecyclerView with ConstraintLayout, and the element TextView (id:cell_summary) cut off its long text;
here is the cell layout xml code:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/cell_title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="16dp"
android:maxLines="2"
android:text="And we find ourselves cruelly cut off from the wireless world"
android:textColor="#android:color/black"
android:textSize="16sp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/cell_thumb"
android:layout_width="120dp"
android:layout_height="88dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="8dp"
android:background="#cccccc"
android:scaleType="centerCrop"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="#id/cell_title" />
<TextView
android:id="#+id/cell_datetime"
android:layout_width="0dp"
android:layout_height="15dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="16dp"
android:text="2Hours"
android:textColor="#999999"
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="#id/cell_thumb"
app:layout_constraintLeft_toRightOf="#id/cell_thumb"
app:layout_constraintRight_toRightOf="parent" />
<TextView
android:id="#+id/cell_summary"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="12dp"
android:text="But then we were not being singled out, the entire country lives in a bubble of unreality, cut off from the outside world and watched by an army of informers."
android:ellipsize="end"
app:layout_constraintBottom_toTopOf="#id/cell_datetime"
app:layout_constraintLeft_toLeftOf="#id/cell_datetime"
app:layout_constraintRight_toRightOf="#id/cell_datetime"
app:layout_constraintTop_toTopOf="#id/cell_thumb" />
<View
android:layout_width="0dp"
android:layout_height="0.5dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="16dp"
android:background="#dddddd"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/cell_thumb" />
</android.support.constraint.ConstraintLayout>
If I add android:maxLines="3", the TextView will work correctly. But here I need an unbounded TextView.

remove android:layout_marginBottom="12dp" from cell_summary

Try below code this will help you out :-
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="16dp"
android:orientation="vertical">
<TextView
android:id="#+id/cell_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:maxLines="2"
android:text="And we find ourselves cruelly cut off from the wireless world"
android:textColor="#android:color/black"
android:textSize="16sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal">
<ImageView
android:id="#+id/cell_thumb"
android:layout_width="120dp"
android:layout_height="88dp"
android:layout_gravity="center_vertical"
android:background="#cccccc"
android:scaleType="centerCrop" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:id="#+id/cell_summary"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ellipsize="end"
android:text="But then we were not being singled out, the entire country lives in a bubble of unreality, cut off from the outside world and watched by an army of informers." />
<TextView
android:id="#+id/cell_datetime"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="2Hours"
android:textColor="#999999"
android:textSize="12sp" />
</LinearLayout>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:background="#dddddd" />