Code from above first steps saved
From MyWiki
<?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="com.example.gthom009.myapplication.MainActivity"> <Button android:id="@+id/button1" android:layout_width="368dp" android:layout_height="wrap_content" android:background="#ff3333" android:onClick="george" android:text="george was here" tools:layout_editor_absoluteX="8dp" tools:layout_editor_absoluteY="1dp" tools:text="main test" /> </android.support.constraint.ConstraintLayout>