<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    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="su.mylab.getimageexample.MainActivity">

   <FrameLayout
       android:id="@+id/container"
       android:layout_width="match_parent"
       android:layout_height="match_parent">
   </FrameLayout>

</android.support.constraint.ConstraintLayout>