ANDROID - Login Form Design 2

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="#5F04B4"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/tvUserName"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="20dp"

        android:text="UserName"

        android:textColor="#ffffff" />

    <EditText

        android:id="@+id/edtUserName"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content" />

    <TextView

        android:id="@+id/tvPassword"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Password"

        android:textColor="#ffffff" />

    <EditText

        android:id="@+id/edtPassword"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:password="true" />

    <Button

        android:id="@+id/btnLogin"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Login" />

</LinearLayout>