Android vertical barrier is not aligning - android

I am having trouble to aligning TextViews and Barrier in Android. Somehow the barrier stays/stick to the left or right edge of the parent layout. See the blue and green line in image.
I want to align the barrier in the way the red line in image so it can separate left and right content.
Layout XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<ImageView
android:id="#+id/cover_photo"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="24dp"
android:scaleType="centerCrop"
android:src="#drawable/ferrari"
app:layout_constraintBottom_toBottomOf="#id/user_avatar"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<ImageView
android:id="#+id/user_avatar"
android:layout_width="96dp"
android:layout_height="96dp"
android:layout_marginStart="16dp"
android:background="#FFFFFF"
android:padding="1dp"
android:scaleType="centerCrop"
android:src="#drawable/user_avatar"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.3" />
<TextView
android:id="#+id/username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:text="Lora Mitchell's Car"
android:textColor="#000"
android:textSize="24sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/user_avatar" />
<TextView
android:id="#+id/manufacturer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Manufacturer"
app:layout_constraintStart_toStartOf="#+id/username"
app:layout_constraintTop_toBottomOf="#+id/username" />
<TextView
android:id="#+id/model"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Model"
app:layout_constraintStart_toStartOf="#+id/username"
app:layout_constraintTop_toBottomOf="#+id/manufacturer" />
<TextView
android:id="#+id/type"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Type"
app:layout_constraintStart_toStartOf="#+id/username"
app:layout_constraintTop_toBottomOf="#+id/model" />
<TextView
android:id="#+id/bore_stroke"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Bore and stroke"
app:layout_constraintStart_toStartOf="#+id/username"
app:layout_constraintTop_toBottomOf="#+id/type" />
<TextView
android:id="#+id/max_power"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Maximum power**"
app:layout_constraintStart_toStartOf="#+id/username"
app:layout_constraintTop_toBottomOf="#+id/bore_stroke" />
<TextView
android:id="#+id/specific_power"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Specific power output"
app:layout_constraintStart_toStartOf="#+id/username"
app:layout_constraintTop_toBottomOf="#+id/max_power" />
<TextView
android:id="#+id/max_torque"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Maximum torque"
app:layout_constraintStart_toStartOf="#+id/username"
app:layout_constraintTop_toBottomOf="#+id/specific_power" />
<TextView
android:id="#+id/type_value"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:text="V8 - 90°"
app:layout_constraintEnd_toEndOf="parent"
tools:layout_editor_absoluteY="351dp" />
<android.support.constraint.Barrier
android:id="#+id/barrier"
app:barrierDirection="right"
app:constraint_referenced_ids="bore_stroke,manufacturer,max_torque,model,max_power,type,specific_power" />
</android.support.constraint.ConstraintLayout>

I am not sure that barrier is the best option to separate left and right in your screen, from the documentation :
If the widgets dimensions change, the barrier will automatically move according to its direction to get the most extreme widget:
In my layouts using constraint layout when I want to separate right and left part of the screen I usually use guideline in this way :
<android.support.constraint.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.5" />
I constraint all of my views to the guideline and it works like charm.

Related

Guideline does not shift based on change in Views dimensions inside barrier in ConstraintLayout

I have my root layout as ConstraintLayout in my activity. I have added one Guideline which is Percentage based and it is about 35 % from top. The Guideline divides the Layout in 2 section (35% top & 65% bottom). In top 25% section I have 2 TextViews. The textview text is dynamically changing. One Barrier is added in Layout which has my Guideline added in it. Top constraint of Image inside the below Section 65% is given to bottom of Barrier & bottom constraint of textview inside the 25% section is given to top of Barrier. When my Text inside above textview is increased, it is not shifting the Guideline & violating Barrier working. How it can be done ?
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/clIntroMainContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/intro_screen_background">
<androidx.constraintlayout.widget.Barrier
android:id="#+id/mybarrier"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:barrierDirection="bottom"
app:constraint_referenced_ids="imageView,textView4,textView3,guideline2"
tools:layout_editor_absoluteY="731dp" />
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="200dp"
android:scaleType="fitXY"
android:visibility="visible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"
app:srcCompat="#drawable/intro_background_cross" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="50dp"
android:layout_height="50dp"
app:layout_constraintBottom_toBottomOf="#+id/imageView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.50"
app:srcCompat="#mipmap/ic_launcher" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="3dp"
android:gravity="center"
android:text="#string/auto_expense_title"
android:textColor="#color/white"
android:textSize="#dimen/ExtraLargeText"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="#+id/imageView2"
app:layout_constraintStart_toStartOf="#+id/imageView2"
app:layout_constraintTop_toBottomOf="#+id/imageView2" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="3dp"
android:gravity="center"
android:text="#string/auto_expense_info"
android:textColor="#color/white"
android:textSize="#dimen/MedText"
app:layout_constraintBottom_toTopOf="#+id/mybarrier"
app:layout_constraintEnd_toEndOf="#+id/textView3"
app:layout_constraintStart_toStartOf="#+id/textView3"
app:layout_constraintTop_toBottomOf="#+id/textView3" />
<ImageView
android:id="#+id/iv2"
android:layout_width="wrap_content"
android:layout_height="330dp"
android:layout_gravity="center"
android:adjustViewBounds="true"
app:layout_constraintBottom_toTopOf="#+id/mybarrier"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/guideline2"
app:layout_constraintVertical_bias="0.0"
app:srcCompat="#drawable/phone_blue_black_final_intro" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.35" />
</androidx.constraintlayout.widget.ConstraintLayout>
As I understand the question you want to change top part based on "textView4"'s text size changed, If text is small then above part will not stay 25% in my answer. Let me know if your requirement is different, I will update it.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/clIntroMainContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/color_grey">
<androidx.constraintlayout.widget.Barrier
android:id="#+id/mybarrier"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:barrierDirection="bottom"
app:constraint_referenced_ids="imageView,textView4,textView3,guideline2"
tools:layout_editor_absoluteY="731dp" />
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="200dp"
android:scaleType="fitXY"
android:visibility="visible"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#color/browser_actions_text_color" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="50dp"
android:layout_height="50dp"
app:layout_constraintBottom_toBottomOf="#+id/imageView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.50"
app:srcCompat="#drawable/ic_pen" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="3dp"
android:gravity="center"
android:text="auto_expense_title"
android:textColor="#color/white"
android:textSize="#dimen/_12ssp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="#+id/imageView2"
app:layout_constraintStart_toStartOf="#+id/imageView2"
app:layout_constraintTop_toBottomOf="#+id/imageView2" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="3dp"
android:gravity="center"
android:text="auto_expense_info auto_expense_info auto_expense_info auto_expense_info"
android:textColor="#color/white"
android:textSize="#dimen/_15ssp"
app:layout_constraintBottom_toTopOf="#+id/mybarrier"
app:layout_constraintEnd_toEndOf="#+id/textView3"
app:layout_constraintStart_toStartOf="#+id/textView3"
app:layout_constraintTop_toBottomOf="#+id/textView3" />
<ImageView
android:id="#+id/iv2"
android:layout_width="wrap_content"
android:layout_height="330dp"
android:layout_gravity="center"
android:adjustViewBounds="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/mybarrier"
app:layout_constraintVertical_bias="0.0"
app:srcCompat="#drawable/empty_star" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.35" />
</androidx.constraintlayout.widget.ConstraintLayout>

Problem placing TextView on ImageView using ConstraintLayout

I am using Constraintlayout and I want to place my Textview on my Imageview, it is supposed to look like this after I'm done: https://i.stack.imgur.com/mYAws.png but each time I add constraints to the texts(Vertically and horizontally), the texts disorganizes and goes totally from how I want it to be,
Sometimes even shifting my images. I have tried severally to adjust it well to no avail
My layout.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.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">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".FirstFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Current"
android:textColor="#FF3D19"
android:textSize="24sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/imageView3"
android:layout_width="358dp"
android:layout_height="337dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView3"
app:srcCompat="#drawable/orange_panel" />
<ImageView
android:id="#+id/imageView4"
android:layout_width="146dp"
android:layout_height="151dp"
android:layout_marginStart="45dp"
android:layout_marginTop="7dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView3"
app:srcCompat="#drawable/green_panel" />
<ImageView
android:id="#+id/imageView5"
android:layout_width="146dp"
android:layout_height="151dp"
android:layout_marginTop="6dp"
android:layout_marginEnd="44dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView3"
app:srcCompat="#drawable/pink_panel" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tonight"
android:textColor="#FFFFFF"
android:textSize="18sp"
tools:layout_editor_absoluteX="89dp"
tools:layout_editor_absoluteY="415dp" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tomorrow"
android:textColor="#FFFFFF"
android:textSize="18sp"
tools:layout_editor_absoluteX="254dp"
tools:layout_editor_absoluteY="415dp" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
The answer is pretty straightforward. First you should delete this lines from both text views.
tools:layout_editor_absoluteX="254dp"
tools:layout_editor_absoluteY="415dp"
Then all you need to do is add constraints like this. Below are constraints for your image
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
And the constraints for your text view would be like this.
app:layout_constraintEnd_toEndOf="#+id/image_view"
app:layout_constraintStart_toStartOf="#+id/image_view"
app:layout_constraintTop_toTopOf="#+id/image_view"
Of course you can add different constraints for the image because i do not know how do you want to position the image view in the app. But if you want a text view to be inside the image like in the link you sent then the constraints for the text view will be always like this.
It's all about tools:layout_editor_absoluteX and tools:layout_editor_absoluteY for yours textView3 and textView4. Also i think you do not know for what namespace tools exist.
Check the example below; it shows you what constraints can be used to get in the direction of your layout goals.
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.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">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Current"
android:textColor="#FF3D19"
android:textSize="24sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/imageView1"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_marginTop="16dp"
android:background="#00FF00"
android:textColor="#FFFFFF"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView1" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_marginTop="16dp"
android:background="#0000FF"
app:layout_constraintStart_toStartOf="#+id/imageView1"
app:layout_constraintTop_toBottomOf="#+id/imageView1" />
<ImageView
android:id="#+id/imageView3"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_marginTop="16dp"
android:background="#FF0000"
app:layout_constraintEnd_toEndOf="#+id/imageView1"
app:layout_constraintTop_toBottomOf="#+id/imageView1" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tonight"
android:textColor="#FFFFFF"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="#+id/imageView2"
app:layout_constraintEnd_toEndOf="#+id/imageView2"
app:layout_constraintStart_toStartOf="#+id/imageView2"
app:layout_constraintTop_toTopOf="#+id/imageView2" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tomorrow"
android:textColor="#FFFFFF"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="#+id/imageView3"
app:layout_constraintEnd_toEndOf="#+id/imageView3"
app:layout_constraintStart_toStartOf="#+id/imageView3"
app:layout_constraintTop_toTopOf="#+id/imageView3" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
See how this example looks: screenshot.

View get packed in ConstraintLayout, Views run out of screen in LinearLayout

I am implementing a signup/login screen like below
I have tried this using ConstraintLayout like below
<?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:layout_margin="16dp"
tools:context=".MainActivity">
<ImageView
android:id="#+id/img"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_marginBottom="72dp"
android:src="#drawable/ic_launcher_background"
app:layout_constraintBottom_toTopOf="#+id/btn1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed" />
<Button
android:id="#+id/btn1"
android:layout_width="0dp"
android:layout_height="56dp"
android:layout_marginStart="32dp"
android:layout_marginEnd="32dp"
android:layout_marginBottom="12dp"
android:text="Button 1"
app:layout_constraintBottom_toTopOf="#+id/btn2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/img" />
<Button
android:id="#+id/btn2"
android:layout_width="0dp"
android:layout_height="56dp"
android:layout_marginBottom="48dp"
android:text="Button 2"
app:layout_constraintBottom_toTopOf="#+id/txt_already_member"
app:layout_constraintEnd_toEndOf="#+id/btn1"
app:layout_constraintStart_toStartOf="#+id/btn1"
app:layout_constraintTop_toBottomOf="#+id/btn1" />
<TextView
android:id="#+id/txt_already_member"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Already Member? Sign In"
android:textSize="16sp"
app:layout_constraintBottom_toTopOf="#+id/txt_agreement"
app:layout_constraintEnd_toEndOf="#+id/btn2"
app:layout_constraintStart_toStartOf="#+id/btn2"
app:layout_constraintTop_toBottomOf="#+id/btn2" />
<TextView
android:id="#+id/txt_agreement"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="By continuing you agree to our terms and privacy policy"
android:layout_marginTop="32dp"
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Summary of XML:
Vertical chain is applied on four top most views
vertical chain style is set to packed
last text view is constraint to bottom and sides
margin is set on views to separate items.
Problem is when I run this on my phone, bottom text views get tight packed as shown here.
Next I tried LinearLayout like below
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:gravity="center_horizontal"
android:layout_margin="16dp"
android:layout_height="match_parent">
<ImageView
android:id="#+id/img"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_marginBottom="72dp"
android:layout_marginTop="72dp"
android:src="#drawable/ic_launcher_background"/>
<Button
android:id="#+id/btn1"
android:layout_width="match_parent"
android:layout_height="56dp"
android:layout_marginStart="32dp"
android:layout_marginEnd="32dp"
android:layout_marginBottom="8dp"
android:text="Button 1" />
<Button
android:id="#+id/btn2"
android:layout_width="match_parent"
android:layout_marginStart="32dp"
android:layout_marginEnd="32dp"
android:layout_height="56dp"
android:layout_marginBottom="32dp"
android:text="Button 2" />
<TextView
android:id="#+id/txt_already_member"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Already Member? Sign In"
android:textSize="16sp"
android:layout_weight="1"/>
<TextView
android:id="#+id/txt_agreement"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="By continuing you agree to our terms and privacy policy "
android:textSize="12sp"/>
</LinearLayout>
In this case bottom text views are not visible as shown here.
My device resolution is 720 * 1280 pixels.
I suppose the problem is with the hard margins. How could I make the screen look like in the sketch above, regardless of screen height? either using LinearLayout or ConstraintLayout?
I would recommend you you use all screen densities rather than one for this you can use the famous library SDP or follow the guideline provided by android.
Second use Guideline class for Constraintlayout.
Here is the sample code snippet you can also use this one.
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="16dp">
<ImageView
android:id="#+id/img"
android:layout_width="#dimen/_200sdp"
android:layout_height="#dimen/_200sdp"
android:layout_marginTop="16dp"
android:src="#drawable/ic_launcher"
app:layout_constraintBottom_toTopOf="#+id/btn1"
app:layout_constraintEnd_toStartOf="#+id/right"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="#+id/left"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/btn1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button 1"
app:layout_constraintBottom_toTopOf="#+id/btn2"
app:layout_constraintEnd_toStartOf="#+id/right"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="#+id/left"
app:layout_constraintTop_toBottomOf="#+id/img" />
<Button
android:id="#+id/btn2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button 2"
app:layout_constraintBottom_toTopOf="#+id/txt_already_member"
app:layout_constraintEnd_toStartOf="#+id/right"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="#+id/left"
app:layout_constraintTop_toBottomOf="#+id/btn1" />
<TextView
android:id="#+id/txt_already_member"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="Already Member? Sign In"
android:textSize="16sp"
app:layout_constraintBottom_toTopOf="#+id/divider"
app:layout_constraintEnd_toStartOf="#+id/right"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="#+id/left"
app:layout_constraintTop_toBottomOf="#+id/btn2" />
<TextView
android:id="#+id/txt_agreement"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="24dp"
android:text="By continuing you agree to our terms and privacy policy"
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/right"
app:layout_constraintStart_toStartOf="#+id/left"
app:layout_constraintTop_toTopOf="#+id/divider"
app:layout_constraintVertical_bias="1.0" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/left"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_begin="#dimen/_16sdp" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/right"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_end="#dimen/_16sdp" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/divider"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintGuide_percent="0.7"
app:layout_constraintTop_toBottomOf="#+id/txt_already_member" />
Actually solution to my problem is using Guidelines in ConstraintLayout with Guidelines app:layout_constraintGuide_percentattribute and constraining the views to Guidelines.
Since value for app:layout_constraintGuide_percent is a percentage rather than a dp value, it works responsively regardless of screen width/height.
example :
<?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:layout_margin="16dp"
tools:context=".MainActivity">
<ImageView
android:id="#+id/img"
android:layout_width="250dp"
android:layout_height="200dp"
android:src="#drawable/ic_launcher_background"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/guideline4" />
<Button
android:id="#+id/btn1"
android:layout_width="match_parent"
android:layout_height="56dp"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:text="Button 1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/guideline5" />
<Button
android:id="#+id/btn2"
android:layout_width="match_parent"
android:layout_height="56dp"
android:layout_marginTop="8dp"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:text="Button 2"
app:layout_constraintEnd_toEndOf="#+id/btn1"
app:layout_constraintStart_toStartOf="#+id/btn1"
app:layout_constraintTop_toBottomOf="#+id/btn1" />
<TextView
android:id="#+id/txt_already_member"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_marginBottom="16dp"
android:text="Already Member? Sign In"
android:textSize="16sp"
app:layout_constraintBottom_toTopOf="#+id/txt_agreement"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/btn2" />
<TextView
android:id="#+id/txt_agreement"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
android:text="By continuing you agree to our terms and privacy policy "
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent=".1" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent=".6" />
</androidx.constraintlayout.widget.ConstraintLayout>
Thank you very much Rehan Sarwar for remembering me about Guidelines.

Constraint Layout to stretch to edge of the screen

here is the image of the pic i want without the space on the rightI have a nested constraint layout.
I am trying to use a drawable as a background for my constraint layout. The only problem is that it does not stretches to the edges of the screen. what I want is to have the drawable on the edge of the screen so that it can be a part of the edge of the screen.
<?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:background="#drawable/img_bg"
android:layout_height="match_parent"
tools:context=".MainActivity">
<ImageButton
android:id="#+id/imageButton"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_marginEnd="12dp"
android:translationZ="8dp"
app:layout_constraintBottom_toBottomOf="#+id/innter_constraint"
app:layout_constraintEnd_toEndOf="#id/innter_constraint"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/barrier"
app:srcCompat="#drawable/ic_btn_enter" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="of spa booking"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/tv_termsandconditions">
</TextView>
<TextView
android:id="#+id/tv_termsandconditions"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginTop="102dp"
android:gravity="center"
android:text="#string/terms_and_condititons"
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/imageButton"
app:layout_constraintVertical_bias="0.736" />
<androidx.constraintlayout.widget.Barrier
android:id="#+id/barrier"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:barrierDirection="bottom"
app:constraint_referenced_ids="innter_constraint"
tools:layout_editor_absoluteY="437dp">
</androidx.constraintlayout.widget.Barrier>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/innter_constraint"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:alpha="0.5"
android:background="#drawable/ic_img_bg"
android:orientation="vertical"
android:padding="40dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.51"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintLeft_toRightOf="#+id/guideline_vertical"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="#+id/guideline_vertical"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.499">
<EditText
android:id="#+id/editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="(+91)Enter the mobile number"
android:inputType="phone"
android:textSize="16sp"
app:layout_constraintBottom_toBottomOf="#+id/imageView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="#+id/imageView" />
<ImageView
android:id="#+id/imageView"
android:layout_width="16dp"
android:layout_height="16dp"
android:layout_gravity="center"
android:src="#drawable/ic_icon_phone"
app:layout_constraintEnd_toStartOf="#+id/editText"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/editText" />
<TextView
android:id="#+id/not_verify_short"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingBottom="16dp"
android:text="Hello,"
android:textColor="#color/colorViews"
android:textSize="40sp"
app:layout_constraintBottom_toTopOf="#+id/editText"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.constraintlayout.widget.Barrier
android:id="#+id/barrier2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingBottom="20dp"
app:barrierDirection="bottom"
app:constraint_referenced_ids="editText" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline_vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.2" />
</androidx.constraintlayout.widget.ConstraintLayout>
as you can see I really don't want the space that is out there and need to just stick it to the right edge of the screen. How can I make sure that it is scalable in all the phones. I used padding but it goes off the screen and is not a recommended practice. What constraint should I add to fill my space on the right side of the screen with the drawable background.

Why do the buttons goes up?

So I programmed a simple app with android studio and the layout that is shown in the app when I run it is different than the xml file I designed.
Here is a link of an image of the problem.
https://imgur.com/6JIHSQ7
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="#+id/subBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/subBtn"
android:textSize="30sp"
app:layout_constraintBaseline_toBaselineOf="#+id/addBtn"
app:layout_constraintStart_toStartOf="#+id/divBtn" />
<Button
android:id="#+id/addBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="36dp"
android:layout_marginLeft="36dp"
android:layout_marginBottom="42dp"
android:text="#string/addBtn"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="#+id/multBtn"
app:layout_constraintStart_toEndOf="#+id/subBtn" />
<EditText
android:id="#+id/n1EditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="56dp"
android:ems="10"
android:hint="#string/number1"
android:inputType="textPersonName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.444"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="#+id/n2EditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="39dp"
android:ems="10"
android:hint="#string/number2"
android:inputType="textPersonName"
app:layout_constraintStart_toStartOf="#+id/n1EditText"
app:layout_constraintTop_toBottomOf="#+id/n1EditText" />
<Button
android:id="#+id/multBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="108dp"
android:layout_marginRight="108dp"
android:layout_marginBottom="336dp"
android:text="#string/multBtn"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
<Button
android:id="#+id/divBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="88dp"
android:layout_marginLeft="88dp"
android:layout_marginBottom="336dp"
android:text="#string/divBtn"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<TextView
android:id="#+id/resultTextView"
android:layout_width="174dp"
android:layout_height="73dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:background="#color/colorPrimaryDark"
android:text="#string/resultView"
android:textColor="#color/colorPrimary"
android:textSize="50sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.455"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/n2EditText"
app:layout_constraintVertical_bias="0.637" />
</androidx.constraintlayout.widget.ConstraintLayout>
I think it might be related to the virtual device i'm using but I don't know if that's the problem.
The problem is, your addBtn and subBtn are not aware of the n2EditText. The addBtn depends on the divBtn and the divBtn is placed 336dp above the bottom edge of the screen.
If you need the addBtn to appear below the n2EditText then you need to add a vertical constraint connecting to the n2EditText. Once your buttons are connected to their immediate top elements, you don't need to add the bottom constraint to the bottom edge of the screen.
Imagine a ConstraintLayout as a collection of widgets hanging down from the top of the screen, each tied to the immediately top elements with the chains called "constraints". You don't need to tie the bottom widget to the ground unless it is required by design.
Here is the modified layout:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/subBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="-"
android:textSize="30sp"
android:layout_marginTop="16dp"
app:layout_constraintTop_toBottomOf="#+id/n2EditText"
app:layout_constraintStart_toStartOf="#+id/n2EditText"/>
<Button
android:id="#+id/addBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="+"
android:textSize="30sp"
app:layout_constraintStart_toEndOf="#+id/subBtn"
app:layout_constraintTop_toTopOf="#+id/subBtn"
android:layout_marginStart="16dp"/>
<EditText
android:id="#+id/n1EditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="56dp"
android:ems="10"
android:hint="n1"
android:inputType="textPersonName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="#+id/n2EditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:ems="10"
android:hint="n2"
android:inputType="textPersonName"
app:layout_constraintStart_toStartOf="#+id/n1EditText"
app:layout_constraintTop_toBottomOf="#+id/n1EditText"/>
<Button
android:id="#+id/multBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="*"
android:textSize="30sp"
app:layout_constraintStart_toEndOf="#+id/divBtn"
android:layout_marginStart="16dp"
app:layout_constraintTop_toTopOf="#+id/divBtn"/>
<Button
android:id="#+id/divBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="/"
android:textSize="30sp"
app:layout_constraintStart_toStartOf="#+id/subBtn"
android:layout_marginTop="8dp"
app:layout_constraintTop_toBottomOf="#+id/subBtn"/>
<TextView
android:id="#+id/resultTextView"
android:layout_width="174dp"
android:layout_height="73dp"
android:layout_marginBottom="8dp"
android:background="#color/colorPrimaryDark"
android:text="res"
android:textColor="#color/colorPrimary"
android:textSize="50sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginTop="8dp" app:layout_constraintTop_toBottomOf="#+id/divBtn"/>
</androidx.constraintlayout.widget.ConstraintLayout>
Anyway, when you have a lot of widgets, you may have to use a ScrollView to accommodate them all.
Try this
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="#+id/subBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="52dp"
android:layout_marginEnd="25dp"
android:layout_marginRight="25dp"
android:text="submit"
android:textSize="30sp"
app:layout_constraintEnd_toStartOf="#+id/addBtn"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/n2EditText" />
<Button
android:id="#+id/addBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="52dp"
android:text="add"
android:textSize="30sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/subBtn"
app:layout_constraintTop_toBottomOf="#+id/n2EditText" />
<EditText
android:id="#+id/n1EditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="52dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:ems="10"
android:hint="1"
android:inputType="textPersonName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.439"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="#+id/n2EditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="2dp"
android:layout_marginLeft="2dp"
android:layout_marginTop="36dp"
android:ems="10"
android:hint="2"
android:inputType="textPersonName"
app:layout_constraintStart_toStartOf="#+id/n1EditText"
app:layout_constraintTop_toBottomOf="#+id/n1EditText" />
<Button
android:id="#+id/multBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="44dp"
android:text="mult"
android:textSize="30sp"
app:layout_constraintStart_toEndOf="#+id/subBtn"
app:layout_constraintTop_toBottomOf="#+id/addBtn" />
<Button
android:id="#+id/divBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="44dp"
android:layout_marginEnd="48dp"
android:layout_marginRight="48dp"
android:text="div"
android:textSize="30sp"
app:layout_constraintEnd_toEndOf="#+id/subBtn"
app:layout_constraintTop_toBottomOf="#+id/subBtn" />
<TextView
android:id="#+id/resultTextView"
android:layout_width="174dp"
android:layout_height="73dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="48dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:background="#color/colorPrimaryDark"
android:text="resultView"
android:textColor="#color/colorPrimary"
android:textSize="50sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.547"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/divBtn" />
</androidx.constraintlayout.widget.ConstraintLayout>
Probably on your layout editor and phone screen sizes are different. Use ConstraintLayout or some other add constraints to views
I cannot say definitly just looking at image but i think you are using facing problem because of your layout. Use LinearLayout to fix it.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical" />
<!-- EditText: number1 -->
<!-- EditText Number2 -->
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<!-- 2 Buttons here -->
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<!-- 2 Buttons here -->
</LinearLayout>
</LinearLayout>
Some general tips that can help:
Check the constraints if you're using ConstraintLayout or relatives between view if you're using RelativeLayout;
Check the values and the units of views;
Check the screen resolution of your "Preview" pane and Emulator.
If it's possible to provide some additional information about the layout that is used, if these tips didn't help.
In preview pane you can find info about resolutions here:
In the emulator pane you can simple see the sizes in the column:

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