ConstraintLayout 中的 Textviews

Question

我在一个布局中有 2 个文本视图。该布局将在recyclerview中使用。

首先布局是这样的：

我的代码是：

<?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/mViewRoot"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="?android:attr/selectableItemBackground"
    android:clickable="true"
    android:focusable="true">

    <TextView
        android:id="@+id/mTextViewTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="16dp"
        android:layout_marginRight="16dp"
        android:layout_marginTop="16dp"
        android:text="title"
        android:textColor="@android:color/black"
        android:textSize="18sp"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/mTextViewDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="16dp"
        android:layout_marginLeft="0dp"
        android:layout_marginRight="16dp"
        android:layout_marginTop="8dp"
        android:text="date"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="@+id/mTextViewTitle"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/mTextViewTitle"
        app:layout_constraintVertical_bias="0.0" />
</android.support.constraint.ConstraintLayout>

结果剪裁成这样。 margin right好像没用

我也尝试过将 textviews 的宽度设为 0dp。

密码是：

<?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/mViewRoot"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="?android:attr/selectableItemBackground"
    android:clickable="true"
    android:focusable="true">

    <TextView
        android:id="@+id/mTextViewTitle"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginLeft="16dp"
        android:layout_marginRight="16dp"
        android:layout_marginTop="16dp"
        android:text="title"
        android:textColor="@android:color/black"
        android:textSize="18sp"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/mTextViewDate"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginBottom="16dp"
        android:layout_marginLeft="0dp"
        android:layout_marginRight="16dp"
        android:layout_marginTop="8dp"
        android:text="date"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="@+id/mTextViewTitle"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/mTextViewTitle"
        app:layout_constraintVertical_bias="0.0" />
</android.support.constraint.ConstraintLayout>

结果如下。下面的文本视图与其上面的约束不匹配。

如何解决这个问题？

Answer 1

<?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/mViewRoot"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="?android:attr/selectableItemBackground"
    android:clickable="true"
    android:focusable="true">

    <TextView
        android:id="@+id/mTextViewTitle"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginLeft="16dp"
        android:layout_marginRight="16dp"
        android:layout_marginTop="16dp"
        android:text="asd;fjalksd fjlkasdjflasdflkasdlfkja lsdkfjals dfalskdfj alsdkfja sdlfkjalsdfj"
        android:textColor="@android:color/black"
        android:textSize="18sp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/mTextViewDate"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginBottom="16dp"
        android:layout_marginLeft="0dp"
        android:layout_marginRight="16dp"
        android:layout_marginTop="8dp"
        android:text="date asdf asdf asdf asdf asdf adasdf asdf asdf asdf asdf asdf asdfasdf"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="@+id/mTextViewTitle"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/mTextViewTitle"  />
</android.support.constraint.ConstraintLayout>

ConstraintLayout 中的 Textviews

Textviews inside ConstraintLayout

layout

android

android-constraintlayout