Android ConstraintLayout : Three buttons equally distribute across the width

To make 3 view equally distribute across the width just need to set constraint start/end of each view must define correct

Code

<android.support.constraint.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button 1"
        app:layout_constraintEnd_toStartOf="@+id/button2"
        app:layout_constraintStart_toStartOf="parent"
        />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button 2"
        app:layout_constraintEnd_toStartOf="@+id/button3"
        app:layout_constraintStart_toEndOf="@+id/button1"
        />

    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button 3"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/button2"
        />

</android.support.constraint.ConstraintLayout>

Output

MORE
If you need 3 views full width, just need to change android:layout_width="wrap_content" to android:layout_width="0dp"

Output


Here is a visual example.

  1. Select the views
  2. Right click and choose Chain > Create Horizontal Chain

enter image description here

See also

  • ConstraintLayout: pack vs chain

Try the below 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"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main_inference"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_editor_absoluteX="0dp"
    app:layout_editor_absoluteY="80dp"
    tools:layout_editor_absoluteX="0dp"
    tools:layout_editor_absoluteY="80dp">


    <Button
        android:text="Button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/button7"
        android:layout_marginTop="16dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginBottom="16dp"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        tools:layout_constraintRight_creator="1"
        tools:layout_constraintLeft_creator="1" />

    <Button
        android:text="Button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/button8"
        app:layout_constraintTop_toTopOf="@+id/button7"
        tools:layout_constraintLeft_creator="1"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginStart="8dp"
        app:layout_constraintRight_toLeftOf="@+id/button7"
        android:layout_marginEnd="8dp" />

    <Button
        android:text="Button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/button9"
        app:layout_constraintBaseline_toBaselineOf="@+id/button7"
        tools:layout_constraintRight_creator="1"
        android:layout_marginEnd="7dp"
        app:layout_constraintRight_toRightOf="parent"
        android:layout_marginStart="8dp"
        app:layout_constraintLeft_toRightOf="@+id/button7" />
</android.support.constraint.ConstraintLayout>

Try this it works for me...

    <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="match_parent">

<Button
    android:id="@+id/button_save"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:text="@string/button_save_text"
    android:layout_marginStart="8dp"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="4dp"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintRight_toLeftOf="@+id/button_share"
    app:layout_constraintHorizontal_chainStyle="spread" />

<Button
    android:id="@+id/button_share"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:text="@string/button_share_text"
    android:layout_marginStart="4dp"
    android:layout_marginEnd="8dp"
    android:layout_marginBottom="8dp"
    app:layout_constraintLeft_toRightOf="@+id/button_save"
    app:layout_constraintRight_toLeftOf="parent"
    app:layout_constraintBottom_toBottomOf="parent" />

</android.support.constraint.ConstraintLayout>

Tags:

Android

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