android/playground/src/main/res/layout/activity_slice_test.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="org.apache.weex.SliceTestActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="addCellClick"
        android:text="ADD CELL"/>

    <TextView
        android:id="@+id/report_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/button"
        android:layout_alignBottom="@+id/button"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:gravity="center_vertical"
        tools:text="create: 12ms, avg: 10ms&#xA;refresh: 12ms, avg: 10ms"/>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="210dp"
        android:layout_below="@+id/button"/>
</RelativeLayout>