Question

我正在尝试使用ConstraintLayout在Android中实现以下布局。

但是，两个用户名TextViews需要扩展，直到达到最大宽度为止，这取决于每个电话的屏幕。

第一个用户名应该是可见的，并且应尽可能具有8dp的边距，然后是具有固定宽度的“答复箭头”，然后，如果合适的话，应尽可能多地显示“答复用户名” TextView应该可见。点分隔符，日期和点赞TexViews应该在wrap_content上可见。

在iOS中，我们已经设法通过使用内容拥抱和内容压缩优先级来实现这种布局。 Android中有类似的功能吗？

这是我的XML布局供参考：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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/newspaperLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

<View
    android:id="@+id/commentDepthView"
    android:layout_width="2dp"
    android:layout_height="0dp"
    android:layout_marginStart="@dimen/default_margin"
    android:background="@color/blueDark"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    />

<TextView
    android:id="@+id/commentAuthorTextView"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginStart="@dimen/default_margin"
    android:layout_marginTop="@dimen/default_margin"
    android:ellipsize="end"
    android:lines="1"
    android:textColor="@color/blue"
    android:textStyle="bold"
    app:layout_constraintBottom_toTopOf="@id/commentTextView"
    app:layout_constraintEnd_toStartOf="@id/replyToArrowImageView"
    app:layout_constraintHorizontal_chainStyle="packed"
    app:layout_constraintStart_toEndOf="@+id/commentDepthView"
    app:layout_constraintTop_toTopOf="parent"
    tools:text="Username"/>

<ImageView
    android:id="@+id/replyToArrowImageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="@dimen/default_margin"
    android:layout_marginEnd="8dp"
    android:textStyle="bold"
    app:layout_constraintBottom_toBottomOf="@id/commentAuthorTextView"
    app:layout_constraintEnd_toStartOf="@id/commentReplyToTextView"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toEndOf="@+id/commentAuthorTextView"
    app:layout_constraintTop_toTopOf="@id/commentAuthorTextView"
    app:srcCompat="@drawable/reply_to_arrow"/>

<TextView
    android:id="@+id/commentReplyToTextView"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginStart="@dimen/default_margin"
    android:ellipsize="end"
    android:lines="1"
    android:textColor="@color/blue"
    android:textStyle="bold"
    app:layout_constraintBottom_toBottomOf="@+id/commentAuthorTextView"
    app:layout_constraintEnd_toStartOf="@+id/dotSeparatorTextView"
    app:layout_constraintHorizontal_bias="0.0"
    app:layout_constraintHorizontal_chainStyle="packed"
    app:layout_constraintStart_toEndOf="@id/replyToArrowImageView"
    app:layout_constraintTop_toTopOf="@id/commentAuthorTextView"
    tools:text="Reply To Username"
    />

<TextView
    android:id="@+id/dotSeparatorTextView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="@dimen/default_margin"
    android:layout_marginEnd="8dp"
    android:text="@string/dot_separator"
    android:textStyle="bold"
    app:layout_constraintBottom_toBottomOf="@id/commentAuthorTextView"
    app:layout_constraintEnd_toStartOf="@+id/commentDateTextView"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toEndOf="@+id/commentReplyToTextView"
    app:layout_constraintTop_toTopOf="@id/commentAuthorTextView"/>

<TextView
    android:id="@+id/commentDateTextView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="@dimen/default_margin"
    android:layout_marginEnd="@dimen/default_margin"
    app:layout_constraintBottom_toBottomOf="@+id/commentAuthorTextView"
    app:layout_constraintEnd_toStartOf="@id/commentLikesTextView"
    app:layout_constraintStart_toEndOf="@id/dotSeparatorTextView"
    app:layout_constraintTop_toTopOf="@+id/commentAuthorTextView"
    tools:text="1/1/1970"/>

<TextView
    android:id="@+id/commentLikesTextView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="@dimen/default_margin"
    android:layout_marginEnd="@dimen/default_margin"
    app:layout_constraintBottom_toBottomOf="@+id/commentAuthorTextView"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toEndOf="@id/commentDateTextView"
    app:layout_constraintTop_toTopOf="@+id/commentAuthorTextView"
    tools:text="0 Likes"/>


<TextView
    android:id="@+id/commentTextView"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginStart="@dimen/default_margin"
    android:layout_marginTop="@dimen/default_margin"
    android:layout_marginEnd="@dimen/default_margin"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toEndOf="@id/commentDepthView"
    app:layout_constraintTop_toBottomOf="@+id/commentAuthorTextView"
    tools:text="This is test comment that is really relly long. Well not that long, but it's long enough, don't you think?"/>

<View
    android:id="@+id/separatorView"
    android:layout_width="0dp"
    android:layout_height="0.5dp"
    android:layout_marginStart="@dimen/default_margin"
    android:layout_marginTop="@dimen/default_margin"
    android:layout_marginEnd="@dimen/default_margin"
    android:background="@color/grey"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toEndOf="@id/commentDepthView"
    app:layout_constraintTop_toBottomOf="@+id/commentTextView"/>

</androidx.constraintlayout.widget.ConstraintLayout>

任何建议都值得欢迎，即使使用的布局与ConstraintLayout不同。非常感谢。

Answer 1

提供第一个用户名

android:layout_width="0dp" 
app:layout_constraintHorizontal_bias="0"
app:layout_constraintWidth_default="wrap"

第二 android：layout_width =“ 0dp”

rest是wrap_content并将其链接

ConstraintLayout设置约束优先级？

1 个答案: