native-android-csharp/DemoAndroid/Resources/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">
    
    <EditText android:id="@+id/etInput"
              android:layout_width="match_parent" 
              android:layout_height="wrap_content"
              android:hint="Enter text here to create QR"/>
    
    <ImageView android:id="@+id/ivQR"
            android:layout_width="match_parent" 
               android:layout_height="wrap_content" />
    
    <Button android:id="@+id/btnWolPage"
            android:layout_width="match_parent" 
            android:layout_height="wrap_content"
            android:text="Go to wake on lan page"
            android:background="@color/blue"
            android:textColor="@color/white"
            android:height="15pt"/>
</LinearLayout>