Android Robotium - 屏幕上有两个tabhost

Question

屏幕上有两个tabhost 标签视图为android.R.id.tabs 我用：

ViewGroup tabs = (ViewGroup) solo.getView(android.R.id.tabs);
View viewYouWantToDoStuffWith = tabs.getChildAt(x);
solo.clickOnView(viewYouWantToDoStuffWith);

只能控制一个 我怎么能独自完成这个？