<!-- Demonstrates using a relative layout to create a form -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/blue"
android:padding="10px">
<TextView id="@+id/label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Type here:"/>
<EditText id="@+id/entry"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@android:drawable/editbox_background"
android:layout_below="@id/label"/>
<Button id="@+id/ok"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/entry"
android:layout_alignParentRight="true"
android:layout_marginLeft="10px"
android:text="OK" />
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@id/ok"
android:layout_alignTop="@id/ok"
android:text="Cancel" />
</RelativeLayout>
載入它可以直接調用OnCreate() 方法，下面是它的源碼
Protected void onCreate(Bundle savedValues)
{
// Be sure to call the super class.
super.onCreate(savedValues);
// Load the compiled layout resource into the window's
// default ViewGroup.
// The source file is res/layout/hello_activity.xml
setContentView(R.layout.hello_activity);
// Retrieve any important stored values.
restoreValues(savedValues);
}
