Android SDK "Only the original thread that created a view hierarchy can touch its views"

　DoJaなんかだとCanvasとかIApplicationをRunnableにしてメインループをそこにおいて描画なんてのをやるんだけど、IApplication=Activity Canvas=Viewで同じことやろうとすると上のメッセージがでる。どうもこういうことらしい

http://code.google.com/android/reference/android/view/View.html

The basic cycle of a view is as follows:
An event comes in and is dispatched to the appropriate view. The view handles the event and notifies any listeners.
If in the course of processing the event, the view's bounds may need to be changed, the view will call requestLayout().
Similarly, if in the course of processing the event the view's appearance may need to be changed, the view will call invalidate().
If either requestLayout() or invalidate() were called, the framework will take care of measuring, laying out, and drawing the tree as appropriate.
Note: The entire view tree is single threaded. You must always be on the UI thread when calling any method on any view. If you are doing work on other threads and want to update the state of a view from that thread, you should use a Handler.

こちらも同様のアドヴァイスが。いちはやくDoJaから(?)の移植をしておられる。
http://castor.s26.xrea.com/blog/2007/11/17