private void handleScroll(RecyclerView recyclerView) {
if (scrollState != RecyclerView.SCROLL_STATE_IDLE) {
return;
}
DragInfo lastDragInfo = dragManager.getLastDragInfo();
if (lastDragInfo != null) {
handleDragScroll(recyclerView, lastDragInfo);
}
}
void handleDragScroll(RecyclerView rv, DragInfo dragInfo) {
if (rv.getLayoutManager().canScrollHorizontally()) {
if (rv.canScrollHorizontally(-1) && dragInfo.shouldScrollLeft()) {
rv.scrollBy(-SCROLL_AMOUNT, 0);
dragManager.clearNextMove();
} else if (rv.canScrollHorizontally(1) && dragInfo.shouldScrollRight(rv.getWidth())) {
rv.scrollBy(SCROLL_AMOUNT, 0);
dragManager.clearNextMove();
}
} else if (rv.getLayoutManager().canScrollVertically()) {
if (rv.canScrollVertically(-1) && dragInfo.shouldScrollUp()) {
rv.scrollBy(0, -SCROLL_AMOUNT);
dragManager.clearNextMove();
} else if (rv.canScrollVertically(1) && dragInfo.shouldScrollDown(rv.getHeight())) {
rv.scrollBy(0, SCROLL_AMOUNT);
dragManager.clearNextMove();
}
}
}
/**
* You probably want to use this to set the currently dragging item to blank while it's being
* dragged
*
* @return the id of the item currently being dragged or {@code RecyclerView.NO_ID } if not being
* dragged
*/
public long getDraggingId() {
return dragManager.getDraggingId();
}
