MateriDesign:MaterialCardView,Chips,Dialog,Menu.NavigationView,CheckBox,Switch,BottomSheetBehavior
MaterialCardView右上角会多出一个选框materialCardView.setChecked(!materialCardView.isChecked());实现拖拽定义布局publicclassDraggableCoordinatorLayoutextendsCoordinatorLayout{/**Alistenertousewhenachildviewisbeingdragged