<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:background="@drawable/back"
    android:gravity="center"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <EditText
        android:id="@+id/Username"
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName"
        android:hint="@string/username"
        android:paddingLeft="20dp"
        android:background="@drawable/bt"
        tools:layout_editor_absoluteX="99dp"
        tools:layout_editor_absoluteY="69dp" />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/txtview"
    android:textColor="@color/white"
    />

    <Button
        android:background="@drawable/bt"
        android:id="@+id/login"
        android:onClick="btnlogin_Click"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/login"
        tools:layout_editor_absoluteX="161dp"
        tools:layout_editor_absoluteY="297dp" />

</LinearLayout>