android - 在 ConstraintLayout 中等距分布 View

Question

我正在尝试制作 5 ImageButton在 ConstraintLayout 上，它们之间的间距相等，但我遇到了一些问题来锚定它们并使其容易，例如:



我的xml代码:

    android:id="@+id/navigation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom"
    android:background="@drawable/sheet_shadow"
    android:padding="5dp">

    <ImageButton
        android:id="@+id/btn1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="18dp"
        android:layout_marginBottom="8dp"
        android:background="?attr/selectableItemBackgroundBorderless"
        android:tint="@color/grey_40"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ic_more_vert" />

    <ImageButton
        android:id="@+id/btn2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="18dp"
        android:layout_marginBottom="8dp"
        android:background="?attr/selectableItemBackgroundBorderless"
        android:tint="@color/grey_40"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toEndOf="@+id/btn1"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ic_more_vert" />

    <ImageButton
        android:id="@+id/btn3"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="18dp"
        android:layout_marginBottom="8dp"
        android:background="?attr/selectableItemBackgroundBorderless"
        android:tint="@color/grey_40"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toEndOf="@+id/btn2"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ic_more_vert" />

    <ImageButton
        android:id="@+id/btn4"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="18dp"
        android:layout_marginEnd="8dp"
        android:layout_marginBottom="8dp"
        android:background="?attr/selectableItemBackgroundBorderless"
        android:tint="@color/grey_40"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/btn5"
        app:layout_constraintStart_toEndOf="@+id/btn3"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ic_more_vert" />

    <ImageButton
        android:id="@+id/btn5"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="18dp"
        android:layout_marginEnd="8dp"
        android:layout_marginBottom="8dp"
        android:background="?attr/selectableItemBackgroundBorderless"
        android:tint="@color/grey_40"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ic_more_vert" />

</android.support.constraint.ConstraintLayout>

Answer 1

您应该创建链并设置:

app:layout_constraintHorizontal_chainStyle=”spread”

这里有一些关于使用 ConstraintLayout 创建链的资源:
https://constraintlayout.com/basics/create_chains.html

更新:

例子

<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"
tools:context=".MainActivity">

<ImageButton
    android:id="@+id/imageView1"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintEnd_toStartOf="@id/imageView2"
    app:layout_constraintHorizontal_chainStyle="spread"
    android:src="@mipmap/ic_launcher"/>

<ImageButton
    android:id="@+id/imageView2"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    app:layout_constraintStart_toEndOf="@id/imageView1"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintEnd_toStartOf="@id/imageView3"
    android:src="@mipmap/ic_launcher"/>

<ImageButton
    android:id="@+id/imageView3"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    app:layout_constraintStart_toEndOf="@id/imageView2"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintEnd_toStartOf="@id/imageView4"
    android:src="@mipmap/ic_launcher"/>

<ImageButton
    android:id="@+id/imageView4"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    app:layout_constraintStart_toEndOf="@id/imageView3"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintEnd_toStartOf="@id/imageView5"
    android:src="@mipmap/ic_launcher"/>

<ImageButton
    android:id="@+id/imageView5"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    app:layout_constraintStart_toEndOf="@id/imageView4"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    android:src="@mipmap/ic_launcher"/>