Creating a UI for the mobile activity

In this section, we need to build the UI for the Android handheld activity section of our application. This will enable us to communicate and send messages and images between the Android wearable and the Android handheld device.

To create the user interface for the mobile activity, follow these simple steps:

1. From the Project Navigator window, choose the mobile section and open the activity_mobile.xml file that is located in the res | layout folder, and add the following highlighted code:

   <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
   android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
   android:paddingRight="@dimen/activity_horizontal_margin"
   android:paddingTop="@dimen/activity_vertical_margin"
       android:paddingBottom="@dimen...