我正在使用nhaarman的ListviewAnimation库
https://github.com/nhaarman/ListViewAnimations,效果很好.
但是我面临以下问题：
我面临的主要问题是,我无法调试我的代码.我已经将四个必需的库直接复制/粘贴到libs文件夹中.在任何listview方法(如onItemLongClick())中放置调试点都不起作用.
第二个问题是,拖放listView在我的代码中不起作用.每当我尝试拖动任何列表项时,在删除列表项时,该项将采用与其拖动相同的位置.
这是我用过的代码：
- listview.enableDragAndDrop();
- listview.setDraggableManager(new TouchViewDraggableManager(
- R.id.list_row_draganddrop_textview));
- listview.setOnItemMovedListener(this);
- listview.setOnItemLongClickListener(this);
- @Override
- public void onItemMoved(final int originalPosition,final int newPosition) {
- if (mToast != null) {
- mToast.cancel();
- }
- mToast = Toast.makeText(getApplicationContext(),"Moved"
- + swingBottomInAnimationAdapter.getItem(newPosition)
- + newPosition,Toast.LENGTH_SHORT);
- mToast.show();
- }
- @Override
- public boolean onItemLongClick(final AdapterView<?> parent,final View view,final int position,final long id) {
- if (listview != null) {
- listview.startDragging(position - listview.getHeaderViewsCount());
- }
- return true;
- }
解决方法
Whenever I try to drag any list item,on dropping the list item,the item takes the same position from which it was dragged.
当然.处理位置变化是你的责任,你应该在onItemMoved回调中处理它：
- @Override
- public void onItemMoved(final int originalPosition,final int newPosition) {
- if (mToast != null) {
- mToast.cancel();
- }
- mToast = Toast.makeText(getApplicationContext(),"Moved"
- + swingBottomInAnimationAdapter.getItem(newPosition)
- + newPosition,Toast.LENGTH_SHORT);
- mToast.show();
- // Adapt the following to your implementation
- if (originalPosition != newPosition) {
- YourObject item = (YourObject) yourAdapter.getItem(originalPosition);
- yourAdapter.moveItem(item,newPosition);
- }
- }
上面提到的方法看起来像：
- public void moveItem(YourObject item,int newIndex) {
- if (mEntries != null) {
- mEntries.remove(item);
- mEntries.add(newIndex,item);
- notifyDataSetChanged();
- }
- }
如果你浏览源代码,你会发现你正在拖动的是一个位图.列表项位于其原始位置.
