关于布局的问题

Question

<?xml version="1.0" encoding="utf-8"?><view xmlns:android="http://schemas.android.com/apk/res/android"
          class="com.google.android.gms.maps.MapFragment"
          android:id="@+id/map"
          android:layout_width="match_parent"
          android:layout_height="match_parent"/>

Answer 1

<?xml version"utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent"> <fragment 
          android:id="@+id/map"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:name="com.google.android.gms.maps.MapFragment"/>
</LinearLayout>应该外边加一层才可以