将最大视图的左侧与约束布局对齐

Question

嗨，我正在尝试查看时间表。如果用户设置为显示 24 小时或不显示，则开放时间的格式会发生变化。有一天商店关门了。字符串 Closed 是动态的，它每天都可能发生，来自 VM.days.get(X).time

这就是我目前得到的：

我想将关闭时间与小时左侧对齐。

这是我的 ConstraintLayout

<android.support.constraint.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="@dimen/base_space">

    <TextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="@dimen/small_space"
        android:text="@{VM.title}"
        android:textStyle="bold"
        tools:text="Heures de la semaine" />

    <android.support.constraint.Barrier
        android:id="@+id/barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:barrierDirection="start"
        app:constraint_referenced_ids="first_time,second_time,third_time,fourth_time,fifth_time,sixth_time" />

    <TextView
        android:id="@+id/first_day"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(0).day}"
        android:textColor="@{VM.days.get(0).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(0).isBold}"
        app:layout_constraintTop_toBottomOf="@id/title"
        tools:text="Sunday" />

    <TextView
        android:id="@+id/first_time"
        app:layout_constraintLeft_toLeftOf="@+id/barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(0).time}"
        android:textColor="@{VM.days.get(0).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(0).isBold}"
        app:layout_constraintBottom_toBottomOf="@+id/first_day"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/barrier"
        app:layout_constraintTop_toTopOf="@+id/first_day"
        tools:text="8:30 AM - 9:00 PM" />

    <TextView
        android:id="@+id/second_day"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(1).day}"
        android:textColor="@{VM.days.get(1).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(1).isBold}"
        app:layout_constraintTop_toBottomOf="@id/first_day"
        tools:text="Monday" />

    <TextView
        android:id="@+id/second_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(1).time}"
        android:textColor="@{VM.days.get(1).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(1).isBold}"
        app:layout_constraintBottom_toBottomOf="@+id/second_day"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintLeft_toLeftOf="@+id/barrier"
        app:layout_constraintStart_toStartOf="@+id/barrier"
        app:layout_constraintTop_toTopOf="@+id/second_day"
        tools:text="Closed" />

    <TextView
        android:id="@+id/third_day"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(2).day}"
        android:textColor="@{VM.days.get(2).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(2).isBold}"
        app:layout_constraintTop_toBottomOf="@id/second_day"
        tools:text="Tuesday" />

    <TextView
        android:id="@+id/third_time"
        app:layout_constraintLeft_toLeftOf="@+id/barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(2).time}"
        android:textColor="@{VM.days.get(2).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(2).isBold}"
        app:layout_constraintBottom_toBottomOf="@+id/third_day"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/barrier"
        app:layout_constraintTop_toTopOf="@+id/third_day"
        tools:text="8:00 - 21:00" />

    <TextView
        android:id="@+id/fourth_day"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(3).day}"
        android:textColor="@{VM.days.get(3).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(3).isBold}"
        app:layout_constraintTop_toBottomOf="@id/third_day"
        tools:text="Wednesday" />

    <TextView
        android:id="@+id/fourth_time"
        app:layout_constraintLeft_toLeftOf="@+id/barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(3).time}"
        android:textColor="@{VM.days.get(3).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(3).isBold}"
        app:layout_constraintBottom_toBottomOf="@+id/fourth_day"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/barrier"
        app:layout_constraintTop_toTopOf="@+id/fourth_day"
        tools:text="8:00 - 21:00" />

    <TextView
        android:id="@+id/fifth_day"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(4).day}"
        android:textColor="@{VM.days.get(4).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(4).isBold}"
        app:layout_constraintTop_toBottomOf="@id/fourth_day"
        tools:text="Thursday" />

    <TextView
        android:id="@+id/fifth_time"
        app:layout_constraintLeft_toLeftOf="@+id/barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(4).time}"
        android:textColor="@{VM.days.get(4).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(4).isBold}"
        app:layout_constraintBottom_toBottomOf="@+id/fifth_day"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/barrier"
        app:layout_constraintTop_toTopOf="@+id/fifth_day"
        tools:text="8:00 - 21:00" />

    <TextView
        android:id="@+id/sixth_day"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(5).day}"
        android:textColor="@{VM.days.get(5).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(5).isBold}"
        app:layout_constraintTop_toBottomOf="@id/fifth_day"
        tools:text="Friday" />

    <TextView
        android:id="@+id/sixth_time"
        app:layout_constraintLeft_toLeftOf="@+id/barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(5).time}"
        android:textColor="@{VM.days.get(5).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(5).isBold}"
        app:layout_constraintBottom_toBottomOf="@+id/sixth_day"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/barrier"
        app:layout_constraintTop_toTopOf="@+id/sixth_day"
        tools:text="8:00 - 21:00" />

    <TextView
        android:id="@+id/seventh_day"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(6).day}"
        android:textColor="@{VM.days.get(6).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(6).isBold}"
        app:layout_constraintTop_toBottomOf="@id/sixth_day"
        tools:text="Saturday" />

    <TextView
        android:id="@+id/seventh_time"
        app:layout_constraintLeft_toLeftOf="@+id/barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{VM.days.get(6).time}"
        android:textColor="@{VM.days.get(6).highlight ? @color/red : @color/gray}"
        app:isBold="@{VM.days.get(6).isBold}"
        app:layout_constraintBottom_toBottomOf="@+id/seventh_day"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/barrier"
        app:layout_constraintTop_toTopOf="@+id/seventh_day"
        tools:text="8:00 - 21:00" />


</android.support.constraint.ConstraintLayout>

我尝试将所有 timeUI 宽度设置为 0dp 并从屏障开始到父级。但如果 UI 一直有这些约束，它们就会消失

Answer 1

您还可以使用Barrier。

使用Barrier，您可以对齐 Start <-> Barrier <-> End，然后在屏障中放置要与屏障对齐的视图的所有 id，然后将 的方向设置Barrier为start所有这些视图的id意见：

  <androidx.constraintlayout.widget.Barrier
    android:id="@+id/barrier"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:barrierDirection="end"
    app:constraint_referenced_ids="textView1,textView2,..." />