Android Studio 3.1.4 不显示布局预览

我最近安装了 android studio v 3.1.4 的更新，我正在尝试为我的应用程序设计一些布局。但是前面没有显示我的 Xml 代码的结果。当我同步项目时它成功运行..哪里出了问题？

我多次尝试通过更改一些依赖项以使其工作来解决此问题，
例如 'com.android.support:appcompat-v7:28.0.0-alpha3' ：通过其他版本但仍然始终不显示以前的 . 我还尝试清理和重建项目。

> Here some files   
> 
> > main_activity.xml
> > 
> > > <?xml version="1.0" encoding="utf-8"?>
> > > <android.support.v4.widget.DrawerLayout
> > > 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">
> > > 
> > > 
> > > <RelativeLayout
> > >     android:id="@+id/rel"
> > >     android:layout_width="match_parent"
> > >     android:layout_height="match_parent">
> > 
> >     <FrameLayout
> >         android:id="@+id/main_container"
> >         android:layout_width="match_parent"
> >         android:layout_height="match_parent"
> >         android:layout_alignParentLeft="true"
> >         android:layout_alignParentStart="true"
> >         android:layout_alignParentTop="true">
> > 
> >         <android.support.v7.widget.RecyclerView
> >             android:id="@+id/all_users"
> >             android:layout_width="match_parent"
> >             android:layout_height="match_parent">
> > 
> >         </android.support.v7.widget.RecyclerView>
> >     </FrameLayout> </RelativeLayout>
> > 
> >     <android.support.design.widget.NavigationView
> >         android:layout_width="wrap_content"
> >         android:layout_height="match_parent"
> >        android:layout_gravity="start"
> >         android:layout_marginBottom="3dp"></android.support.design.widget.NavigationView>
> > 
> > </android.support.v4.widget.DrawerLayout>

应用程序级

    apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.chaabane.takwa.myapplication"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
   .................
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'


    implementation 'com.android.support:design:28.0.0-alpha3'
    implementation 'com.android.support:cardview-v7:28.0.0-alpha3'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
 implementation 'com.google.firebase:firebase-auth:11.8.0'
    implementation 'com.google.firebase:firebase-database:11.8.0'
    implementation 'com.google.firebase:firebase-storage:11.8.0'
    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'
}

apply plugin: 'com.google.gms.google-services'

**

> 项目建设

**

  dependencies {
        classpath 'com.android.tools.build:gradle:3.1.1'



        classpath 'com.google.gms:google-services:3.1.1'
    }
}