java.lang.RuntimeException: Unable to start activity ComponentInfo{com.vma.kindergarten/com.vma.kindergarten.bjkq.BabyCheckCountActivity}: java.lang.ClassCastException: android.widget.RadioButton cannot be cast to android.view.ViewGroup
首先 RadioButton是View不是ViewGroup
使用了RadioGroup与FrameLayout的连用，使得fragment添加出错导致