activity_mail.xml

gistfile1.txt

<?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:layout_margin="16dp"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btnVerificar"
        android:text="@string/txt_btn_verificar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/btnPareados"
        android:text="@string/txt_btn_pareados"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/btnBuscarDispositivos"
        android:text="@string/txt_btn_buscar_dispositivo"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>