//隐藏
gvs(5,fab)
javax(null,fab,"android.support.design.widget.FloatingActionButton","hide")
//显示
gvs(5,fab)
javax(null,fab,"android.support.design.widget.FloatingActionButton","show")
//状态，0是show，8是hide
ug(5,"visibility",a)
.作者:md