ItemTouchHelper用法:
// COMPLETED (3) Create a new ItemTouchHelper with a SimpleCallback that handles both LEFT and RIGHT swipe directions
// Create an item touch helper to handle swiping items off the list
new ItemTouchHelper(new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT) {
// COMPLETED (4) Override onMove and simply return false inside
@Override
public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
//do nothing, we only care about swiping
return false;
}
// COMPLETED (5) Override onSwiped
@Override
public void onSwiped(RecyclerView.ViewHolder viewHolder, int swipeDir) {
// COMPLETED (8) Inside, get the viewHolder's itemView's tag and store in a long variable id
//get the id of the item being swiped
long id = (long) viewHolder.itemView.getTag();
// COMPLETED (9) call removeGuest and pass through that id
//remove from DB
removeGuest(id);
// COMPLETED (10) call swapCursor on mAdapter passing in getAllGuests() as the argument
//update the list
mAdapter.swapCursor(getAllGuests());
}
//COMPLETED (11) attach the ItemTouchHelper to the waitlistRecyclerView
}).attachToRecyclerView(waitlistRecyclerView);
