Can you build layouts inside of fragements in Honeycomb?

I'm a bit new to Android and very new to Fragments. I'm attempting to port an application from Activities to Fragments (well, Activities + Fragments) for Honeycomb. Before we get to the tablet screens, we want to have our app working with the Fragment Compatibility Library for 1.6+ devices. I've read the documentation and examples from Google an开发者_如何学God nothing explicitly says I can or cannot do the following, but it is not working for me.

The first screen ported is the launcher screen, which has a layout file called fragment_splash.xml

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/splash_background">
    <fragment class="...StartupFragmentLayout$StartupFragment"
        android:id="@+id/fragStartup" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" >

        <TextView
            android:id="@+id/debugText"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:visibility="gone"
            android:text="DEBUG ON"
            android:gravity="center"
            android:textSize="35sp"
            android:textColor="@color/blue_text"
            android:textStyle="bold"
            android:shadowColor="#FFFFFF"
            android:shadowRadius="2"/>
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="0.4"
            android:gravity="bottom">
           ...
    </fragment>
</LinearLayout>

However, this does not work. I get an error stating that StartupFragmentLayout$StartupFragment did not create a view. I'm beginning to suspect that I can't nest anything inside the <fragment>, since I haven't seen it done in any documentation or examples. Is this correct, or is my problem something else?

It's not clear from the documentation whether you can have child views in a <fragment>. Given none of the fragment samples do this then I suspect it is not the way that they are meant to be used. You could try changing <fragment> into a <FrameLayout> and adding the fragment into it at run-time if you really want to, to see if that works.

However, I think your best solution is to put your child views into a separate layout file and then in onCreateView inflate into the fragment's container via say:

final View iv = inflater.inflate(R.layout.favourites, container, false);

I don't think that you will lose anything as a result of doing it this way.

Just to tie this off, fragments can not have children in layouts. PJL is suggesting the right approach. The layout inside a fragment should be specified in a separate XML file. You can then inject this layout into the view tree by returning it from the fragments onCreateView method.