Android Studio 3.1.4: не удается просмотреть новую панель инструментов

Question

Я новичок в Android Studio и пытаюсь создать новую панель инструментов, но получаю "java.lang.ClassNotFoundException": Ниже я нашел возможное решение, но не хочу понижать compileSdkVersion и targetSdkVersion с 28 до 27.

android.view.View $ OnUnhandledKeyEventListener

Я даже ничего не кодировал в "MainActivity.java". Я только что создал toolbar_layout.xml и не могу ничего просмотреть!

Как я могу исправить эту ошибку предварительного просмотра?

styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

</resources>

build.gradle (модуль: приложение)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.rob.toolbar"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:design:28.0.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

MainActivity.java

package com.example.rob.toolbar;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    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"
    tools:context=".MainActivity">

    <include
        layout="@layout/toolbar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

</RelativeLayout>

toolbar_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar_layout"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/holo_red_dark">

</android.support.v7.widget.Toolbar>

Сообщение об исключении:

java.lang.ClassNotFoundException: android.view.View $ OnUnhandledKeyEventListener в org.jetbrains.android.uipreview.ModuleClassLoader.load (ModuleClassLoader.java:180) на com.android.tools.idea.rendering.RenderClassLoader.findClass (RenderClassLoader.java:61) в org.jetbrains.android.uipreview.ModuleClassLoader.findClass (ModuleClassLoader.java:118) в java.lang.ClassLoader.loadClass (ClassLoader.java:424) в java.lang.ClassLoader.loadClass (ClassLoader.java:357) в org.jetbrains.android.uipreview.ModuleClassLoader.loadClass (ModuleClassLoader.java:213) на android.support.v7.widget.ViewUtils.isLayoutRtl (ViewUtils.java:58) на android.support.v7.widget.Toolbar.onMeasure_Original (Toolbar.java:1578) на android.support.v7.widget.Toolbar.onMeasure (Toolbar.java) на android.view.View.measure_Original (View.java:22071) на android.view.View_Delegate.measure (View_Delegate.java:80) на android.view.View.measure (View.java:22035) на android.widget.RelativeLayout.measureChildHor horizontal (RelativeLayout.java:715) на android.widget.RelativeLayout.onMeasure (RelativeLayout.java:461) на android.view.View.measure_Original (View.java:22071) на android.view.View_Delegate.measure (View_Delegate.java:80) на android.view.View.measure (View.java:22035) на android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6602) на android.widget.FrameLayout.onMeasure (FrameLayout.java:185) на android.view.View.measure_Original (View.java:22071) на android.view.View_Delegate.measure (View_Delegate.java:80) на android.view.View.measure (View.java:22035) на android.widget.RelativeLayout.measureChildHor horizontal (RelativeLayout.java:715) на android.widget.RelativeLayout.onMeasure (RelativeLayout.java:461) на android.view.View.measure_Original (View.java:22071) на android.view.View_Delegate.measure (View_Delegate.java:80) на android.view.View.measure (View.java:22035) на com.android.layoutlib.bridge.impl.RenderSessionImpl.measureView (RenderSessionImpl.java:590) на com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate (RenderSessionImpl.java:343) на com.android.layoutlib.bridge.Bridge.createSession (Bridge.java:384) на com.android.tools.idea.layoutlib.LayoutLibrary.createSession (LayoutLibrary.java:193) на com.android.tools.idea.rendering.RenderTask.createRenderSession (RenderTask.java:544) на com.android.tools.idea.rendering.RenderTask.lambda $ inflate $ 3 (RenderTask.java:678) в java.util.concurrent.FutureTask.run (FutureTask.java:266) в java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1142) в java.util.concurrent.ThreadPoolExecutor $ Worker.run (ThreadPoolExecutor.java:617) at java.lang.Thread.run (Thread.java:745)