Layout Preview showing blank screen with Coordinator layout in Android Studio 3.0

Question

This is layout design code when i open layout preview page grey android screen showing only (android...CoordinatorLayout) and nothing showing on the screen.How can i solve this problem,i want to show the layout design in Layout Preview Screen.

<android.support.design.widget.CoordinatorLayout
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:fitsSystemWindows="true"
tools:context=".activity.AddDietActivity">

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/AppTheme.AppBarOverlay">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:gravity="center"
        app:popupTheme="@style/AppTheme.PopupOverlay"
        android:background="@drawable/menubar">

        <TextView
            android:id="@+id/tv_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:textStyle="bold"
            android:textSize="18dp"/>

        <TextView
            android:id="@+id/submitBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_gravity="end"
            android:layout_margin="10dp"
            android:onClick="clickToAddDiet"
            android:text="Save"
            android:textSize="18sp"
            android:textColor="#fff"/>
    </android.support.v7.widget.Toolbar>

</android.support.design.widget.AppBarLayout>

<include layout="@layout/content_add_diet" />

Answer 1

I was getting the same issue and after clicking on the info icon in the layout editor, I found out why:

Change the Theme in Editor to AppCompat or another theme that inherits it. Worked for me.