activity_sdkexample.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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.support.constraint.ConstraintLayout
        android:id="@+id/activity_sdkexample"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context="com.aurorasdk.SDKExampleActivity">


        <Button
            android:id="@+id/button16"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:onClick="onUseIndicationsClick"
            android:text="Use Indications"
            app:layout_constraintStart_toEndOf="@+id/button7"
            app:layout_constraintTop_toBottomOf="@+id/button4" />

        <Button
            android:id="@+id/button11"
            android:layout_width="63dp"
            android:layout_height="49dp"
            android:layout_marginBottom="8dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="16dp"
            android:onClick="onStopScanClick"
            android:text="Stop"
            app:layout_constraintBottom_toTopOf="@+id/txtCommand"
            app:layout_constraintStart_toEndOf="@+id/button2"
            app:layout_constraintTop_toBottomOf="@+id/statusTextView" />

        <TextView
            android:id="@+id/statusTextView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Tap connect to scan for a Dreamband device"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <ProgressBar
            android:id="@+id/progressBarBleActive"
            style="?android:attr/progressBarStyleHorizontal"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:indeterminate="true"
            android:visibility="invisible"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/statusTextView" />

        <Button
            android:id="@+id/button2"
            android:layout_width="66dp"
            android:layout_height="49dp"
            android:layout_marginTop="16dp"
            android:onClick="onStartScanClick"
            android:text="Scan"
            app:layout_constraintStart_toStartOf="@+id/progressBarBleActive"
            app:layout_constraintTop_toBottomOf="@+id/statusTextView" />

        <EditText
            android:id="@+id/txtCommand"
            android:layout_width="247dp"
            android:layout_height="45dp"
            android:layout_marginTop="11dp"
            android:ems="10"
            android:hint="Enter custom command"
            android:inputType="textPersonName"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button2" />

        <Button
            android:id="@+id/btnCustomCommand"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:onClick="onCustomCommandClick"
            android:text="Send"
            app:layout_constraintStart_toEndOf="@+id/txtCommand"
            app:layout_constraintTop_toBottomOf="@+id/button3" />

        <EditText
            android:id="@+id/responseText"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:height="75dp"
            android:editable="false"
            android:ems="30"
            android:hint="Command response will be shown here"
            android:inputType="textMultiLine"
            android:selectAllOnFocus="false"
            android:singleLine="false"
            android:textSize="10sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/txtCommand" />

        <Button
            android:id="@+id/button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="16dp"
            android:onClick="onConnectClick"
            android:text="Connect"
            app:layout_constraintBottom_toTopOf="@+id/txtCommand"
            app:layout_constraintStart_toEndOf="@+id/button11"
            app:layout_constraintTop_toBottomOf="@+id/statusTextView" />

        <Button
            android:id="@+id/button3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="16dp"
            android:onClick="onDisconnectClick"
            android:text="Disconnect"
            app:layout_constraintBottom_toTopOf="@+id/txtCommand"
            app:layout_constraintStart_toEndOf="@+id/button"
            app:layout_constraintTop_toBottomOf="@+id/statusTextView" />

        <Button
            android:id="@+id/button6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:onClick="onWriteFileClick"
            android:text="Write File"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button12" />

        <Button
            android:id="@+id/button7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:onClick="onReadFileClick"
            android:text="Read File"
            app:layout_constraintStart_toEndOf="@+id/button6"
            app:layout_constraintTop_toBottomOf="@+id/button8" />

        <Button
            android:id="@+id/button8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:onClick="onSyncTimeClick"
            android:text="Sync Time"
            app:layout_constraintStart_toEndOf="@+id/button12"
            app:layout_constraintTop_toBottomOf="@+id/responseText" />

        <Button
            android:id="@+id/button9"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:onClick="onLoadProfileClick"
            android:text="Load Profile"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button6" />

        <Button
            android:id="@+id/button10"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:onClick="onUnloadProfileClick"
            android:text="Unload"
            app:layout_constraintStart_toEndOf="@+id/button9"
            app:layout_constraintTop_toBottomOf="@+id/button7" />

        <Button
            android:id="@+id/button12"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:onClick="onLedDemoClick"
            android:text="LED Demo"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/responseText" />

        <Button
            android:id="@+id/button14"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:onClick="onEnableEventsClick"
            android:text="Enable Events"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button9" />

        <Button
            android:id="@+id/button15"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:onClick="onDisableEventsClick"
            android:text="Disable"
            app:layout_constraintStart_toEndOf="@+id/button14"
            app:layout_constraintTop_toBottomOf="@+id/button10" />

        <EditText
            android:id="@+id/eventText"
            android:layout_width="0dp"
            android:layout_height="47dp"
            android:layout_marginTop="8dp"
            android:editable="false"
            android:ems="10"
            android:hint="Events will be be shown here"
            android:inputType="textMultiLine"
            android:textSize="10sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button14" />

        <Button
            android:id="@+id/button4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:onClick="onOsInfoClick"
            android:text="OS Info"
            app:layout_constraintStart_toEndOf="@+id/button8"
            app:layout_constraintTop_toBottomOf="@+id/responseText" />

        <Button
            android:id="@+id/button5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:onClick="onUpdateProfileClick"
            android:text="Toggle REM"
            app:layout_constraintStart_toEndOf="@+id/button10"
            app:layout_constraintTop_toBottomOf="@+id/button7" />


    </android.support.constraint.ConstraintLayout>
</ScrollView>