如何在 ConstraintLayout 中以固定边距和动态宽度均匀放置视图？

Question

我想这样设置ConstraintLayout：

我需要有固定的左右约束，大小尺寸比为1:1，宽度可以灵活调整以适应屏幕的实际宽度。我设置如下：

1. 左右约束均为8dp
2. 这些视图的大小设置为“任意大小”
3. layout_constraintDimensionRatio = "1:1"

我所拥有的是所有视图都设置为点，除了设置了左右约束的视图（其他视图只有左约束）。那个应用了 1:1 比例的规则。

我应该怎么做才能修复这个布局？

这是我尝试添加链的 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:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="rs.agilesolutions.constraintlayouttest.MainActivity">

    <TextView
        android:id="@+id/textView"
        android:text="1"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginTop="16dp"
        style="@style/TextViewCustom"
        app:layout_constraintRight_toLeftOf="@+id/textView2"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintDimensionRatio="1:1" />

    <TextView
        android:id="@+id/textView2"
        android:text="2"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintBaseline_toBaselineOf="@+id/textView"
        style="@style/TextViewCustom"
        app:layout_constraintRight_toLeftOf="@+id/textView3"
        app:layout_constraintLeft_toRightOf="@+id/textView"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintDimensionRatio="1:1" />

    <TextView
        android:id="@+id/textView3"
        android:text="3"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintBaseline_toBaselineOf="@+id/textView"
        style="@style/TextViewCustom"
        app:layout_constraintRight_toLeftOf="@+id/textView4"
        app:layout_constraintLeft_toRightOf="@+id/textView2"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintDimensionRatio="1:1" />

    <TextView
        android:id="@+id/textView4"
        android:text="4"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintBaseline_toBaselineOf="@+id/textView"
        style="@style/TextViewCustom"
        app:layout_constraintRight_toLeftOf="@+id/textView5"
        app:layout_constraintLeft_toRightOf="@+id/textView3"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintDimensionRatio="1:1" />

    <TextView
        android:id="@+id/textView5"
        android:text="5"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintBaseline_toBaselineOf="@+id/textView"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/textView4"
        style="@style/TextViewCustom"
        app:layout_constraintDimensionRatio="1:1" />

</android.support.constraint.ConstraintLayout>

这是结果：

非常接近，但还不够好。

Answer 1

您可以创建 chains 以确保相同的分布（例如每行一个链）——这样每个小部件将具有相同的维度。你描述的其余部分应该是正确的。

edit：这是一些 XML。诀窍是只在第一个元素上设置边距。

<?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:background="@color/colorAccent"
        android:id="@+id/textView"
        android:text="1"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginLeft="8dp"
        android:layout_marginStart="8dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginTop="8dp"
        app:layout_constraintRight_toLeftOf="@+id/textView2"
        app:layout_constraintDimensionRatio="1:1" />

    <TextView
        android:background="@color/colorAccent"
        android:id="@+id/textView2"
        android:text="2"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintTop_toTopOf="@+id/textView"
        app:layout_constraintRight_toLeftOf="@+id/textView3"
        app:layout_constraintLeft_toRightOf="@+id/textView"
        app:layout_constraintDimensionRatio="1:1" />

    <TextView
        android:background="@color/colorAccent"
        android:id="@+id/textView3"
        android:text="3"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintTop_toTopOf="@+id/textView"
        app:layout_constraintRight_toLeftOf="@+id/textView4"
        app:layout_constraintLeft_toRightOf="@+id/textView2"
        app:layout_constraintDimensionRatio="1:1" />

    <TextView
        android:background="@color/colorAccent"
        android:id="@+id/textView4"
        android:text="4"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintTop_toTopOf="@+id/textView"
        app:layout_constraintRight_toLeftOf="@+id/textView5"
        app:layout_constraintLeft_toRightOf="@+id/textView3"
        app:layout_constraintDimensionRatio="1:1" />

    <TextView
        android:background="@color/colorAccent"
        android:id="@+id/textView5"
        android:text="5"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintHorizontal_weight="1"
        app:layout_constraintTop_toTopOf="@+id/textView"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/textView4"
        app:layout_constraintDimensionRatio="1:1" />

</android.support.constraint.ConstraintLayout>

Answer 2

<data>
    <variable
        name="model"
        type="model.DoctorCoveredGrade_Data" />
</data>

<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="@dimen/view_spacing30"
    android:layout_marginTop="@dimen/view_spacing5"
    android:paddingStart="@dimen/view_spacing4"
    android:paddingEnd="@dimen/view_spacing4">

        <androidx.core.widget.ContentLoadingProgressBar
            android:id="@+id/progressBar_aGrad"
            style="?android:attr/progressBarStyleHorizontal"
            android:layout_width="0dp"
            android:layout_height="10dp"
            android:layout_marginTop="@dimen/view_spacing5"
            android:layout_marginBottom="@dimen/view_spacing5"
            android:progressDrawable="@drawable/progress_bar_grade_a"
            android:secondaryProgress="0"
            app:layout_constraintHorizontal_weight="0.8"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toLeftOf="@+id/tv_lable"/>

        <TextView
            android:id="@+id/tv_lable"
            style="@style/dwrDetailsTextAsh"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/view_spacing5"
            android:layout_marginBottom="@dimen/view_spacing10"
            android:singleLine="true"
            android:text="@{model.name}"
            app:layout_constraintHorizontal_weight="0.2"
            app:layout_constraintBaseline_toBaselineOf="@+id/progressBar_aGrad"
            app:layout_constraintRight_toLeftOf="@+id/tv_a_grade_values"
            app:layout_constraintLeft_toRightOf="@+id/progressBar_aGrad" />

        <TextView
            android:id="@+id/tv_a_grade_values"
            style="@style/Textlabel_dashboard"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/view_spacing5"
            android:layout_marginBottom="@dimen/view_spacing10"
            android:singleLine="true"
            android:text="@{model.totalcallsgrdwise}"
            app:layout_constraintHorizontal_weight="0.2"
            app:layout_constraintBaseline_toBaselineOf="@+id/progressBar_aGrad"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintLeft_toRightOf="@+id/tv_lable" />

</androidx.constraintlayout.widget.ConstraintLayout>