Swipe ⇆ Drag ⇅ Bind RecyclerView
Thinking of adding swipe/drag ability to your RecyclerView items without making use of any third-party libraries? Well the good news is that there is a utility ItemTouchHelper.SimpleCallback from support library which provides us out of the box methods to do just that. Data Binding makes it even easier.
In ItemTouchHelper.SimpleCallback, you’ll need to overload the constructor SimpleCallback(int dragDirs, int swipeDirs) and override the following methods:
isItemViewSwipeEnabled()/isLongPressDragEnabled()onSwiped()/onMove()
Use SwipeItemTouchHelperCallback / DragItemTouchHelperCallback with listeners to attach it with the RecyclerView.
Sexy Swipe ⇆
1. In your BindingAdapter:
- Pass
ItemTouchHelper.LEFT | ItemTouchHelper.RIGHTasswipeDirsto enable swipe for left/right directions. OnItemSwipeListener.onItemSwiped(int position)is called when we swipe left/right. It containsadapterPositionof the swipedViewHolder.
2. In your XML, bind as follows:
3. There is no point 3, you’re done! 😎
Dope Drag ⇅
1. In your BindingAdapter:
- Pass
ItemTouchHelper.UP | ItemTouchHelper.DOWNasdragDirsto enable drag for up/down directions. OnItemDragListener.onItemDragged(int indexFrom, int indexTo)is called when we drag up/down. It containsadapterPositionof the draggedViewHolderand the targetViewHolder.
2. In your XML, bind as follows:
3. You knew this was coming? Well, there is actually a point 3:
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