public interface OnTabItemSelectedListener
导航栏按钮选中事件
abstract Unit
onSelected(Integer index, Integer old)
onRepeat(Integer index)
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
abstract Unit onSelected(Integer index, Integer old)
选中导航栏的某一项
index
old
abstract Unit onRepeat(Integer index)
重复选中