android constraintlayout，是否可以按百分比设置mmaxWidth

Question

有三个textView，内容大小各不相同。要显示省略号，如果内容要大。

|[aaa][bbb][ccc]           |
|[aaaaaaa...][bbbbbb.][ccc]| 
|[aaa][bbbbbb.......][c...]|   
|[aaaa...][bbbb...][ccc...]|          

找不到使用constraintLayout的解决方案。此解决方案不需要，但是如果它可以通过父宽度的百分比设置具有maxWidth的[a]，这样它就可以为[b]和[c]留下一些宽度

类似的东西(但它并不存在(

android:maxWidth="50%"

有什么建议吗？是什么

<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:padding="22dp">
<TextView
android:id="@+id/greenTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@android:color/holo_green_dark"
app:layout_constraintEnd_toStartOf="@id/blueTextView"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Firdsfgsdfgasdsdfasdsdfsds" />
<TextView
android:id="@+id/blueTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@android:color/holo_blue_dark"
app:layout_constrainedWidth="true"
app:layout_constraintBaseline_toBaselineOf="@id/greenTextView"
app:layout_constraintEnd_toStartOf="@id/orangetextView"
app:layout_constraintStart_toEndOf="@id/greenTextView"
app:layout_constraintTop_toTopOf="parent"
tools:text="Secoasdfsdfsdfsdfsdf.." />
<TextView
android:id="@+id/orangetextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@android:color/holo_orange_dark"
app:layout_constraintBaseline_toBaselineOf="@id/blueTextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@id/blueTextView"
tools:text="Third Very Long Text 123456789" />
</androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

这是一个简单的解决方法，为了实现宽度百分比的逻辑，我们可以使用两个垂直的Guideline，它可以将屏幕划分为三个部分：

这是我为您编写的一个简单代码：

<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:padding="22dp">
<TextView
android:id="@+id/greenTextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@android:color/holo_green_dark"
app:layout_constraintEnd_toStartOf="@+id/guideline"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Firdsfgsdfgasdsdfasdsdfsds" />
<TextView
android:id="@+id/blueTextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@android:color/holo_blue_dark"
app:layout_constrainedWidth="true"
app:layout_constraintBaseline_toBaselineOf="@id/greenTextView"
app:layout_constraintEnd_toStartOf="@+id/guideline3"
app:layout_constraintStart_toStartOf="@+id/guideline"
app:layout_constraintTop_toTopOf="parent"
tools:text="Secoasdfsdfsdfsdfsdf.." />
<TextView
android:id="@+id/orangetextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@android:color/holo_orange_dark"
app:layout_constraintBaseline_toBaselineOf="@id/blueTextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="@+id/guideline3"
tools:text="Third Very Long Text 123456789" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.33" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.66" />
</androidx.constraintlayout.widget.ConstraintLayout>

你可以通过margins自定义空间，任何评论或修改都请告诉我，欢呼