Android Sensor Networks - Arduino - page 159

The Android application needs a different main.xml file and a strings.xml file. Listing 8-4 is the main.xml file
that needs to be created. The graph is created in a nested layout inside of the main relative layout within the main.xml
file. The LinearLayout tag defines the space that will be used to place the graph created at run time. An Edit text box
is used to display the incoming data from the Arduino and has the same functionality as the data-display box for the
ADK monitor program. Two buttons are also created in the main.xml file for the layout: one to sync the data stored
on the SD card and receive current updates while plugged in, and the other to clear the data from the screen. Both
buttons are set up to call a respective function in the activity class.
Listing 8-4. main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android=" http://schemas.android.com/apk/res/android "
android:id="@+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="0.72" >
<LinearLayout
android:id="@+id/chart"
android:layout_width="fill_parent"
android:layout_height="500dp"
android:layout_alignParentTop="true"
/>
<EditText
android:id="@+id/incomingData"
android:layout_width="wrap_content"
android:layout_height="250dp"
android:layout_above="@+id/syncbutton"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:scrollbars="vertical"
android:clickable="false"
android:cursorVisible="false"
android:focusable="false"
android:focusableInTouchMode="false"
android:gravity="top"
android:inputType="textMultiLine|textNoSuggestions"
android:hint="@string/hint" />
<Button
android:id="@+id/clear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:onClick="clearScreen"
android:text="@string/clear" />
<Button
android:id="@+id/syncbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"