constraintLayout 中的居中对齐

Question

我尝试使用 chainStyle 但没有用。请提出解决方案。enter image description here

我想将这些按钮居中对齐，就像上面的两个文本视图一样。我在这里提供了“+3 点”按钮的代码。

我想使用 chainStyle 来实现它。我该怎么做？

<Button
        android:id="@+id/points_3A"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:onClick="points3"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="+3 points"
        app:layout_constraintRight_toLeftOf="@+id/points_3B"
        app:layout_constraintTop_toBottomOf="@id/team_a_score"
        app:layout_constraintHorizontal_chainStyle="spread"/>

    <Button
        android:id="@+id/points_3B"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:onClick="points3"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="+3 points"
        app:layout_constraintLeft_toRightOf="@+id/points_3A"
        app:layout_constraintTop_toBottomOf="@id/team_b_score" />

Answer 1

尝试使用这样的指南

<?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"
>

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent"/>

<Button
    android:id="@+id/points_3A"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    android:background="#EEEEEE"
    android:paddingLeft="30dp"
    android:paddingRight="30dp"
    app:layout_constraintRight_toLeftOf="@+id/guideline"
    android:text="+3 points"
    />

<Button
    android:id="@+id/points_3B"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    android:background="#EEEEEE"
    android:paddingLeft="30dp"
    android:paddingRight="30dp"
    android:text="+3 points"
    app:layout_constraintLeft_toRightOf="@+id/guideline" />

<android.support.constraint.Guideline
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/guideline"
    android:orientation="vertical"
    app:layout_constraintGuide_percent="0.5"
    />

</android.support.constraint.ConstraintLayout>

Answer 2

您可以使用 50% 的 Guideline，然后将您的按钮绑定到指南

<android.support.constraint.Guideline
        android:id="@+id/guidelineHalf"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.5" />

你的按钮现在是：

<Button
        android:id="@+id/points_3A"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:onClick="points3"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="+3 points"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toLeftOf="@+id/guidelineHalf"
        app:layout_constraintTop_toBottomOf="@id/team_a_score"/>

    <Button
        android:id="@+id/points_3B"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:onClick="points3"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="+3 points"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/guidelineHalf"
        app:layout_constraintTop_toBottomOf="@id/team_b_score" />

Answer 3

这里是你如何完成整个事情

<android.support.constraint.ConstraintLayout xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="match_parent">


    <Button
        android:id="@+id/points_3A"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="+3 points"
        app:layout_constraintRight_toLeftOf="@+id/points_3B"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/ta" />

    <Button
        android:id="@+id/points_3B"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="+3 points"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/points_3A"
        android:layout_marginRight="8dp"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/tb" />

    <Button
        android:id="@+id/points_2A"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="+2 points"
        app:layout_constraintRight_toLeftOf="@+id/points_2B"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/points_3A" />

    <Button
        android:id="@+id/points_2B"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="+2 points"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/points_2A"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/points_3B" />

    <Button
        android:id="@+id/points_FA"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="Free Throw"
        app:layout_constraintRight_toLeftOf="@+id/points_FB"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/points_2A" />

    <Button
        android:id="@+id/points_FB"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="#EEEEEE"
        android:paddingLeft="30dp"
        android:paddingRight="30dp"
        android:text="Free Throw"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/points_FA"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/points_2B" />

    <TextView
        android:id="@+id/ta"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:padding="8dp"
        android:text="TeamA\n2"
        android:textAlignment="center"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toLeftOf="@+id/tb"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/tb"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginRight="8dp"
        android:layout_marginTop="8dp"
        android:padding="8dp"
        android:text="TeamB\n2"
        android:textAlignment="center"
        app:layout_constraintLeft_toRightOf="@+id/ta"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />


</android.support.constraint.ConstraintLayout>

constraintLayout 中的居中对齐

central alignment in constraintLayout

android

android-layout

android-constraintlayout