Android Open Source - Reader Drag N Drop Listener

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License

The source code is released under:

GNU General Public License

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Java Source Code

/**
 * Flym/*from   w ww  .j a va  2 s.c  o  m*/
 *
 * Copyright (c) 2012-2013 Frederic Julian
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.carlrice.reader.view;

import android.view.View;
import android.widget.ListView;

/**
 * Implement to handle an item being dragged.
 *
 * @author Eric Harlow
 */
public interface DragNDropListener {
    /**
     * Called when a drag starts.
     *
     * @param itemView the view of the item to be dragged i.e. the drag view
     */
    void onStartDrag(View itemView);

    /**
     * Called when a drag is to be performed.
     *
     * @param x        horizontal coordinate of MotionEvent.
     * @param y        vertical coordinate of MotionEvent.
     * @param listView the listView
     */
    void onDrag(int x, int y, ListView listView);

    /**
     * Called when a drag stops. Any changes in onStartDrag need to be undone here so that the view can be used in the list again.
     *
     * @param itemView the view of the item to be dragged i.e. the drag view
     */
    void onStopDrag(View itemView);

    /**
     * Called when an item is to be dropped.
     *
     * @param flatPosFrom index item started at.
     * @param flatPosTo   index to place item at.
     */
    void onDrop(int flatPosFrom, int flatPosTo);
}

Java Source Code List