Bitcoin Price Index Tutorial on the SSaurel's Blog

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context="com.ssaurel.bitcoinwatcher.MainActivity">

    <ImageView
        android:id="@+id/logo"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_marginTop="50dp"
        android:src="@drawable/bitcoin"
        android:layout_centerHorizontal="true"/>

    <TextView
        android:id="@+id/txt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/logo"
        android:layout_marginTop="50dp"
        android:layout_centerHorizontal="true"
        android:textSize="22sp"
        android:text="Click to load"
        android:gravity="center_horizontal"/>

</RelativeLayout>