<?xml version="1.0" encoding="utf-8"?>

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

     android:layout_width="match_parent"

     android:layout_height="match_parent"

      >

     <TextView

         android:id="@+id/textView1"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignParentTop="true"

         android:layout_centerHorizontal="true"

         android:layout_marginTop="20dp"

         android:text="Please input the username and password to log on."

         android:textSize="14sp"

         android:textAppearance="?android:attr/textAppearanceMedium"

         android:layout_marginLeft="20dp"

         android:layout_marginRight="20dp"

         android:layout_marginBottom="20dp"

          />

     <TextView

         android:id="@+id/text_username"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_below="@id/textView1"

         android:layout_alignLeft="@id/textView1"

         android:layout_marginRight="20dp"

         android:text="User Name:"

         android:textSize="20sp"

         android:layout_marginBottom="20dp"

         />

     <EditText

         android:id="@+id/edit_username"

         android:layout_width="match_parent"

         android:layout_height="wrap_content"

         android:layout_alignBaseline="@id/text_username"

         android:layout_toRightOf="@id/text_username"

         android:layout_alignRight="@id/textView1"

         android:layout_below="@id/textView1"

         />

     <TextView

         android:id="@+id/text_psw"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_below="@id/text_username"

         android:layout_alignLeft="@id/text_username"

         android:layout_marginRight="20dp"

         android:text="Password"

         android:textSize="20sp"

         />

     <EditText

         android:id="@+id/edit_psw"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignBaseline="@id/text_psw"

         android:layout_alignLeft="@id/edit_username"

         android:layout_alignRight="@id/edit_username"

         android:layout_below="@id/edit_username"

         android:inputType="textPassword" />

     <Button

         android:id="@+id/btn_logon"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignRight="@id/edit_psw"

         android:text="Log in"

         android:textSize="21sp"

         android:layout_below="@id/edit_psw"

         android:layout_marginTop="20dp"

         android:layout_marginLeft="20dp"

         />

     <Button

         android:id="@+id/btn_signin"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignBaseline="@+id/btn_logon"

         android:layout_toLeftOf="@+id/btn_logon"

         android:text="Sign in"

         android:textSize="21sp" />

 </RelativeLayout>