app/src/main/res/layout/activity_bluetooth.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
tools:context="com.github.gogetters.letsgo.activities.BluetoothActivity">
<Button
android:id="@+id/bluetooth_button_listen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="14dp"
android:layout_marginTop="19dp"
android:text="@string/listen"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<ListView
android:id="@+id/found_devices"
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_below="@+id/bluetooth_button_listen"
android:layout_alignParentStart="true"
android:layout_marginTop="31dp"
android:background="@android:color/darker_gray" />
<Button
android:id="@+id/bluetooth_button_send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/found_devices"
android:layout_alignStart="@id/bluetooth_button_listen"
android:layout_marginTop="10dp"
android:text="@string/send" />
<Button
android:id="@+id/bluetooth_button_listDevices"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/found_devices"
android:layout_centerHorizontal="true"
android:text="@string/search" />
<TextView
android:id="@+id/status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/bluetooth_button_listDevices"
android:layout_alignBottom="@+id/bluetooth_button_listDevices"
android:layout_alignParentEnd="true"
android:layout_marginEnd="14dp"
android:text="Status"
android:textSize="14sp"
android:textStyle="italic" />
</RelativeLayout>