graphenej/sample/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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="cy.agorise.labs.sample.MainActivity">
    <ScrollView
        android:id="@+id/output_text_container"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toTopOf="@+id/container_controls"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent">
        <TextView
            android:id="@+id/response"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </ScrollView>
    <ScrollView
        android:id="@+id/container_controls"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@id/output_text_container"
        app:layout_constraintBottom_toTopOf="@+id/next_activity">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:gravity="center">
                <Button
                    android:id="@+id/call_get_accounts"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="Get accounts" />
                <EditText
                    android:id="@+id/argument_get_accounts"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="1.2.139205"/>
            </LinearLayout>
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:gravity="center">
                <Button
                    android:id="@+id/call_get_block"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="Get block"/>
                <EditText
                    android:id="@+id/argument_get_block"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="100000"/>
            </LinearLayout>
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:gravity="center">
                <Button
                    android:id="@+id/call_get_block_header"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="Get block header"/>
                <EditText
                    android:id="@+id/argument_get_block_header"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="100000"/>
            </LinearLayout>
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:gravity="center">
                <Button
                    android:id="@+id/call_get_relative_account_history"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="Get relative account history"/>
                <EditText
                    android:id="@+id/argument_get_relative_account_history"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="1.2.138632"/>
            </LinearLayout>
        </LinearLayout>
    </ScrollView>
    <Button
        android:id="@+id/next_activity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Next activity"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@id/container_controls" />
    <TextView
        android:id="@+id/connection_status"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:gravity="center"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent" />

</android.support.constraint.ConstraintLayout>