ConstraintLayout: set height of all views in row to match the tallest one

Question

I\'m trying to utilize a ConstraintLayout (version 1.0.2) to set the height of 2 side-by-side views to match the tallest one of them. This serves as a ViewHolder in for a Re

Answer 1

<TextView
    android:id="@+id/txt_service_request_id"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:background="@drawable/bg_rectangle_blue"
    android:gravity="center"
    android:padding="8dp"
    android:text="@string/service_request_id"
    android:textColor="@android:color/white"
    android:textSize="12sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toStartOf="@+id/txt_service_request_status"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<TextView
    android:id="@+id/txt_service_request_status"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:background="@drawable/bg_rectangle_blue"
    android:gravity="center"
    android:padding="8dp"
    android:text="@string/service_request_status"
    android:textColor="@android:color/white"
    android:textSize="12sp"
    app:layout_constraintBottom_toBottomOf="@+id/txt_service_request_id"
    app:layout_constraintEnd_toStartOf="@+id/txt_service_request_desc"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toEndOf="@+id/txt_service_request_id"
    app:layout_constraintTop_toTopOf="parent" />


<TextView
    android:id="@+id/txt_service_request_desc"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:background="@drawable/bg_rectangle_blue"
    android:gravity="center"
    android:padding="8dp"
    android:text="@string/service_request_desc"
    android:textColor="@android:color/white"
    android:textSize="12sp"
    app:layout_constraintBottom_toBottomOf="@+id/txt_service_request_id"
    app:layout_constraintEnd_toStartOf="@+id/txt_service_request_cat"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toEndOf="@+id/txt_service_request_status"
    app:layout_constraintTop_toTopOf="parent" />

<TextView
    android:id="@+id/txt_service_request_cat"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:background="@drawable/bg_rectangle_blue"
    android:gravity="center"
    android:padding="8dp"
    android:text="@string/service_request_cat"
    android:textColor="@android:color/white"
    android:textSize="12sp"
    app:layout_constraintBottom_toBottomOf="@+id/txt_service_request_id"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toEndOf="@+id/txt_service_request_desc"
    app:layout_constraintTop_toTopOf="parent" />

Answer 2

This might help you.

<android.support.constraint.ConstraintLayout
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin">

    <TextView
        android:id="@+id/tv_1"
        android:layout_width="150dp"
        android:layout_height="match_parent"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:background="@color/colorAccent"
        android:gravity="center"
        android:padding="@dimen/activity_vertical_margin"
        android:text="sjdjhshdjhdjhsdgfjhgsdjfgjsdgfjsdgfhgdsjhfghs"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toLeftOf="@+id/tv_2"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/tv_2"
        android:layout_width="150dp"
        android:layout_height="match_parent"
        android:background="@color/colorPrimary"
        android:gravity="center"
        android:padding="@dimen/activity_vertical_margin"
        android:text="sjdjhsjhd"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/tv_1"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

Answer 3

This is tricky and slow, but it works.

The point is:

• Add additional invisible same layout for measure height. This one has wrap_content height attribute, so it will stretch parent if it is big enough.
• Set your visible layout height to 0dp, so it will fill rest of parent.

As you can see the capture below, we have two layouts. Hidden one is wrap_contents

<?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="wrap_content">

    <TextView
        android:id="@+id/view_1"
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:background="#DDDDDD"
        android:text="@android:string/yes"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toLeftOf="@+id/view_2"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/view_1_invisible"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="#DDDDDD"
        android:text="@android:string/yes"
        android:visibility="invisible"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toLeftOf="@+id/view_2"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/view_2"
        android:layout_width="100dp"
        android:layout_height="0dp"
        android:background="#DDDDDD"
        android:text="@android:string/httpErrorBadUrl"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/view_1"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/view_2_invisible"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:background="#DDDDDD"
        android:text="@android:string/httpErrorBadUrl"
        android:visibility="invisible"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/view_1"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Answer 4

Answering, in case anyone is looking out for answer in future.

ConstraintLayout introduced Barrier in v1.1 to achieve one such functionality asked by the OP in the question

The above mentioned functionality can be achieved using below 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_marginLeft="2dp"
    android:layout_marginRight="2dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

  <TextView
      android:id="@+id/id1"
      android:layout_width="60dp"
      android:layout_height="wrap_content"
      app:layout_constraintTop_toTopOf="parent"
      app:layout_constraintLeft_toLeftOf="parent"
      app:layout_constraintBottom_toBottomOf="@+id/barrier"
      app:layout_constraintVertical_bias="0.0"
      android:text="@string/id1_text" />

  <TextView
      android:id="@+id/id2"
      android:layout_width="0dp"
      android:layout_height="wrap_content"
      app:layout_constraintLeft_toRightOf="@+id/id1"
      app:layout_constraintRight_toRightOf="parent"
      app:layout_constraintTop_toTopOf="parent"
      app:layout_constraintBottom_toBottomOf="@+id/barrier"
      app:layout_constraintVertical_bias="0.0"
      android:text="@string/id2_text" />

  <android.support.constraint.Barrier
      android:id="@+id/barrier"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      app:barrierDirection="bottom"
      app:constraint_referenced_ids="id1,id2" />

</android.support.constraint.ConstraintLayout>