Question

我有ConstraintLayout水平包含3个按钮。我希望3个按钮具有固定的宽度，并在布局的宽度上均匀分布。

Answer 1

这是一个视觉示例。

选择观看次数
右键单击并选择链＆gt;创建水平链

另见

ConstraintLayout: pack vs chain

Answer 2

尝试以下代码

<?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>

Answer 3

要使3个视图在整个宽度上均匀分布，只需设置每个视图的约束start/end必须定义正确

代码

<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>

输出

更多
如果您需要3个全角视图，只需将android:layout_width="wrap_content"更改为android:layout_width="0dp"

输出

Answer 4

试试这个对我有用......

    <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>

Answer 5

只需在所有3个按钮中将android：layout_width =“ wrap_content”设置为android：layout_width =“ 0dp”

Answer 6

你可以使用带有百分比标签的指南，请检查下面的xml并用图像或按钮替换你想要的任何内容

<android.support.constraint.ConstraintLayout
    android:id="@+id/layoutMyProperty"
    android:layout_width="match_parent"
    android:layout_height="100dp"
    android:layout_marginTop="@dimen/margin12"
    android:visibility="visible"
   >
    <android.support.constraint.Guideline
        app:layout_constraintGuide_percent="0.33"
        android:id="@+id/Guideline1"
        android:orientation="vertical"
        android:layout_width="1dp"
        android:layout_height="0dp"/>
    <android.support.constraint.Guideline
        app:layout_constraintGuide_percent="0.66"
        android:id="@+id/Guideline2"
        android:orientation="vertical"
        android:layout_width="1dp"
        android:layout_height="0dp"/>


    <ImageView
        android:id="@+id/myPropertyImage1"
        android:layout_width="0dp"
        android:layout_height="@dimen/homeImageH"
        android:scaleType="centerCrop"
        android:visibility="visible"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintRight_toRightOf="@+id/Guideline1"
        app:layout_constraintEnd_toStartOf="@+id/Guideline1"
        tools:src="@drawable/placeholder" />

    <ImageView
        android:id="@+id/myPropertyImage2"
        android:layout_width="0dp"
        android:layout_height="@dimen/homeImageH"
        android:scaleType="centerCrop"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/Guideline1"
        app:layout_constraintRight_toLeftOf="@+id/Guideline2"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@drawable/placeholder" />

    <ImageView
        android:id="@+id/myPropertyImage3"
        android:layout_width="0dp"
        android:layout_height="@dimen/homeImageH"
        android:scaleType="centerCrop"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/Guideline2"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@drawable/placeholder" />

</android.support.constraint.ConstraintLayout>

Answer 7

尝试使用它。

Android ConstraintLayout：三个按钮在宽度上均匀分布

7 个答案: