activity_main.xml <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="match_parent" 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=".ActivityMain" > <LinearLayout android:id="@+id/LinearLayout01" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/pick_time" android:id="@+id/btnTime" android:paddingLeft="15dp" android:paddingRight="15dp" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/txtTime" android:textSize="20sp" android:layout_marginLeft="20dp" /> <TimePicker android:id="@+id/timePicker" android:layout_width="wrap_content" android:layout_height="wrap_content" android:timePickerMode="spinner" android:visibility="gone" />…