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,这取决于每部手机的屏幕。
第一个用户名应该尽可能可见,它应该有 8dp 的边距,然后是具有固定宽度的“回复箭头”,然后,如果合适,尽可能多的“回复用户名”TextView
应该是可见的。
点分隔符、日期和喜欢 TexViews
awlays 应该可见,在 wrap_content
.
在 iOS 中,我们已经设法通过使用内容拥抱和内容压缩阻力优先级来实现这样的布局。 Android中是否有类似的功能?
这是我的 XML 布局供引用:
<?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>
欢迎提出任何建议,即使使用与
ConstraintLayout
不同的布局.非常感谢。
最佳答案
给出第一个用户名
android:layout_width="0dp"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintWidth_default="wrap"
并排在第二位
android:layout_width="0dp"
rest 是 wrap_content 并链接它们
关于android - ConstraintLayout 设置约束优先级?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56848230/