准则和约束布局未按预期工作

Question

  

我正在开发新闻应用程序，并且已实施约束布局   有指导原则，但不能在模拟器上正确显示   我从官方网站上获取的屏幕截图。

跟随screenshot of an app from emulator

  

article_news.xml以下

<?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/articleImage"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_gravity="center"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginBottom="8dp"
        app:layout_constraintBottom_toTopOf="@+id/guideline6"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/guideline4"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/articleAuthor"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:gravity="start"
        android:text="article_author"
        android:textSize="12sp"
        app:layout_constraintEnd_toStartOf="@+id/guideline4"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/articleTitle"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginBottom="8dp"
        android:text="article_title"
        android:textSize="12sp"
        app:layout_constraintBottom_toBottomOf="@+id/articleImage"
        app:layout_constraintEnd_toStartOf="@+id/guideline4"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/articleAuthor" />


    <TextView
        android:id="@+id/articleTime"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginBottom="8dp"
        android:text="Article Time"
        android:textSize="18sp"
        app:layout_constraintBottom_toTopOf="@+id/guideline5"
        app:layout_constraintEnd_toStartOf="@+id/articleFavorite"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="@+id/articleTitle"
        app:layout_constraintTop_toTopOf="@+id/guideline6" />

    <ImageButton
        android:id="@+id/articleShare"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintBottom_toBottomOf="@+id/articleTime"
        app:layout_constraintEnd_toStartOf="@+id/guideline4"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/articleFavorite"
        app:layout_constraintTop_toTopOf="@+id/articleTime"
        android:contentDescription="TODO" />


    <ImageButton
        android:id="@+id/articleFavorite"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="@+id/articleTime"
        app:layout_constraintEnd_toStartOf="@+id/articleShare"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/articleTime"
        app:layout_constraintTop_toTopOf="@+id/articleTime" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.5" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.3" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.4" />
</android.support.constraint.ConstraintLayout>

在编辑器窗口screenshot from android studio editor

中的屏幕截图下方

下面我想要的屏幕截图 screenshot I want