ListDatasource.java 文件源码

/**
 * Moves entity from one position to another.
 *
 * @param fromPosition an initial index.
 * @param toPosition   a new index.
 */
public void move(@IntRange(from = 0) final int fromPosition,
                 @IntRange(from = 0) final int toPosition) {
    final E e = mItems.remove(fromPosition);
    mItems.add(toPosition, e);
    mDatasourceObservable.notifyItemMoved(fromPosition, toPosition);
}