YouMap/lesson03/src/main/res/layout/activity_publish_grid.xml

<?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/publish_grid_img"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@android:drawable/ic_menu_report_image" />

    <ImageButton
        android:id="@+id/publish_grid_close"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:layout_marginEnd="8dp"
        android:layout_marginTop="8dp"
        android:background="@color/colorWhite"
        app:layout_constraintEnd_toEndOf="@+id/publish_grid_img"
        app:layout_constraintTop_toTopOf="@+id/publish_grid_img"
        app:srcCompat="@android:drawable/ic_menu_close_clear_cancel" />
</android.support.constraint.ConstraintLayout>