keep the margin when the referenced view is gone in ConstraintLayout

Question

I have 2 TextViews as in the xml below. If I hide the textView2 at runtime, I lose the bottom margin. How can I keep the bottom margin between textView and parent to be 16dp when the textView2 is gone.

<?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/textView"
      android:layout_width="0dp"
      android:layout_height="wrap_content"
      android:layout_marginBottom="16dp"
      android:layout_marginEnd="8dp"
      android:layout_marginStart="8dp"
      android:layout_marginTop="8dp"
      android:text="abc"
      app:layout_constraintBottom_toTopOf="@+id/textView2"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintTop_toTopOf="parent"
      app:layout_constraintVertical_chainStyle="packed"
      />

  <TextView
      android:id="@+id/textView2"
      android:layout_width="0dp"
      android:layout_height="wrap_content"
      android:layout_marginBottom="32dp"
      android:layout_marginEnd="8dp"
      android:layout_marginStart="8dp"
      android:text="xyz"
      app:layout_constraintBottom_toBottomOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintTop_toBottomOf="@+id/textView"
      app:layout_constraintVertical_chainStyle="packed"/>
</android.support.constraint.ConstraintLayout>

score 125 · Accepted Answer · answered Oct 03 '17 at 17:06

Use layout_goneMarginBottom:

<?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/textView"
      android:layout_width="0dp"
      android:layout_height="wrap_content"
      android:layout_marginBottom="16dp"
      android:layout_marginEnd="8dp"
      android:layout_marginStart="8dp"
      android:layout_marginTop="8dp"
      android:text="abc"
      app:layout_goneMarginBottom="16dp"
      app:layout_constraintBottom_toTopOf="@+id/textView2"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintTop_toTopOf="parent"
      app:layout_constraintVertical_chainStyle="packed"
      />

  <TextView
      android:id="@+id/textView2"
      android:layout_width="0dp"
      android:layout_height="wrap_content"
      android:layout_marginBottom="32dp"
      android:layout_marginEnd="8dp"
      android:layout_marginStart="8dp"
      android:text="xyz"
      app:layout_constraintBottom_toBottomOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintTop_toBottomOf="@+id/textView"
      app:layout_constraintVertical_chainStyle="packed"/>
</android.support.constraint.ConstraintLayout>

Thanks for the example! In my case I was setting `layout_goneMarginTop` in the view I was hiding, instead of setting `layout_goneMarginBottom` in the view that I wanted to stay visible and keep the margin. — Lucas P., Jul 07 '20 at 14:35

Tarun Anchala · Answer 2 · 2023-08-17T05:17:53.630

Below example helps to understand this concept

Below are the constraints for text3

 app:layout_goneMarginStart="100dp"
 app:layout_constraintStart_toEndOf="@id/text2"
 android:layout_marginStart="10dp"

since we had set start constraint with text2 for text3

when text2 is visible, android:layout_marginStart="10dp" will be considered
when text2 is gone,app:layout_goneMarginStart="100dp" will be considered as text3 start constraint is with text2.

So, when startConstraint is gone it considers goneMarginStart.Similarly,if endConstraint is gone, goneMarginEnd will be considered as below

keep the margin when the referenced view is gone in ConstraintLayout

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