<?xml version="1.0" encoding="utf-8"?>
  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:orientation="vertical"
      android:gravity="center"
      android:layout_width="match_parent"
      android:layout_height="match_parent">
  
  
  
      <TextView
          android:id="@+id/tv_steps"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:gravity="center"
          />
  
  
      <Button
          android:id="@+id/btn_start"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="Start Pedometer"
          />
  
      <Button
          android:id="@+id/btn_stop"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="Stop Pedometer"
          />
  
  </LinearLayout>