显示与设备比较的不同预览

Question

我刚刚将compileSdkVersion更新为28，并使用com.android.support:design:28.0.0 我有一个TextInputEditText和一个MaterialButton的布局，我的android studio预览版（版本：3.1.4）与实际设备（三星J5）不同。
Layout Code:

<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"
    android:layout_marginEnd="16dp"
    android:layout_marginStart="16dp"
    tools:context=".activity.LoginActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:orientation="vertical">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="100dp"
            android:src="@drawable/ic_movie_creation_black_24dp" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/app_name"
            android:textAlignment="center"
            android:textSize="20sp"
            android:layout_marginBottom="10dp"/>
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:layout_marginBottom="10dp">
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:src="@drawable/ic_email_black_24dp"
        android:layout_marginEnd="5dp"/>
        <android.support.design.widget.TextInputLayout
            style="@style/Widget.MaterialComponents.TextInputLayout.FilledBox"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/emailId"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:drawablePadding="5dp"
                android:hint="Email-Id"
                android:inputType="textEmailAddress" />
        </android.support.design.widget.TextInputLayout>
</LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_marginBottom="10dp">
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:src="@drawable/ic_lock_black_24dp"
            android:layout_marginEnd="5dp"/>
        <android.support.design.widget.TextInputLayout
            style="@style/Widget.MaterialComponents.TextInputLayout.FilledBox.Dense"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/password"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:drawablePadding="5dp"
                android:hint="Password"
                android:inputType="textPassword" />
        </android.support.design.widget.TextInputLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_marginBottom="10dp">
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:src="@drawable/ic_work_black_24dp"
            android:layout_marginEnd="5dp"/>
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:background="#ececec">
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Category:"
                android:textColor="@color/primaryColor"
                android:layout_marginStart="12dp"
                android:layout_marginTop="5dp"
                android:textSize="12sp"/>
        <android.support.v7.widget.AppCompatSpinner
            android:id="@+id/spinner"
            android:layout_width="match_parent"
            android:layout_height="45dp">
        </android.support.v7.widget.AppCompatSpinner>
        </LinearLayout>
    </LinearLayout>
        <android.support.design.button.MaterialButton
            android:id="@+id/btnLogin"
            style="@style/Widget.MaterialComponents.Button.UnelevatedButton"
            android:layout_width="match_parent"
            android:layout_height="60dp"
            android:background="@color/primaryColor"
            android:text="Login"
            android:textColor="#ffffff" />
    </LinearLayout>
</RelativeLayout>

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我必须更新我的android studio吗？请帮助