I ended up changing extending a View to a FrameLayout. This way I
can use it as the root in inflate because it is a ViewGroup. I think
the problem was that having a null parent in an inflate doesnt
actually render the views. I may be wrong about this but it worked
for me.
Caching the subviews in onFinishInflate() is a good idea, so i did
that too.
Thanks.
On Jan 19, 5:25 pm, Jason Proctor <jason.android.li...@gmail.com>
wrote:
> override onFinishInflate() and cache your subviews there. the view
> constructor is too early for findViewById().
>
>
>
> >I have an activity defined as:
>
> >public class FlipperDemo extends Activity
> >{
> > �...@override
> > public void onCreate( Bundle savedInstanceState )
> > {
> > super.onCreate( savedInstanceState );
> > setContentView( R.layout.main );
> > }
> >}
>
> >With this in main.xml
>
> ><?xml version="1.0" encoding="utf-8"?>
> > <com.test.MyFlipper
> > xmlns:android="http://schemas.android.com/apk/res/android";
> > android:layout_width="wrap_content"
> > android:layout_height="wrap_content" />
>
> >MyFlipper.java contains
>
> >class MyFlipper extends View
> >{
> > public MyView( Context context, AttributeSet attrs )
> > {
> > super( context, attrs );
> > ViewFlipper flipper1 = (ViewFlipper) LayoutInflater.from
> >( context ).inflate( R.layout.myflipper, null );
> > ViewFlipper flipper2 = (ViewFlipper) findViewById
> >( R.id.flipper );
> > }
> >}
>
> >And myflipper.xml contains
>
> ><?xml version="1.0" encoding="utf-8"?>
> > <ViewFlipper xmlns:android="http://schemas.android.com/apk/res/
> >android"
> > android:id="@+id/flipper"
> > android:layout_width="fill_parent"
> > android:layout_height="fill_parent" >
>
> > <Button
> > android:id="@+id/button1"
> > android:layout_width="fill_parent"
> > android:layout_height="fill_parent" />
>
> > <Button
> > android:id="@+id/button2"
> > android:layout_width="fill_parent"
> > android:layout_height="fill_parent" />
> > </ViewFlipper>
>
> >The problem is that in the MyView() constructor flipper1 gets set, but
> >flipper2 is null! Why cant i get flipper by Id here?
>
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