Xây dựng file activity_item.xml - Tài liệu lập trình android

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:id="@+id/main_content"
        android:layout_height="match_parent"
        android:layout_width="match_parent">

        <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/app_bar"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

            <androidx.appcompat.widget.Toolbar
                style="@style/ToolBarStyle.Event"
                android:background="@color/global__primary"
                android:id="@+id/toolbar"
                android:layout_height="?android:attr/actionBarSize"
                android:layout_width="match_parent"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

        </com.google.android.material.appbar.AppBarLayout>

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior">

            <FrameLayout
                android:id="@+id/content_frame"
                android:layout_width="0dp"
                android:layout_height="0dp"
                android:background="@color/md_white_1000"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent">

            </FrameLayout>

        </androidx.constraintlayout.widget.ConstraintLayout>

    </androidx.coordinatorlayout.widget.CoordinatorLayout>

</layout>