WebView

https://www.digitalocean.com/community/tutorials/android-webview-example-tutorial

<RelativeLayout xmlns:android="https://schemas.android.com/apk/res/android"
   xmlns:tools="https://schemas.android.com/tools" android:layout_width="match_parent"
   android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
   android:paddingRight="@dimen/activity_horizontal_margin"
   android:paddingTop="@dimen/activity_vertical_margin"
   android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

   <WebView
       android:id="@+id/webview"
       android:layout_alignParentTop="true"
       android:layout_alignParentLeft="true"
       android:layout_width="match_parent"
       android:layout_height="match_parent"/>
</RelativeLayout>