Java 如何从listview中删除选定项？

我想知道如何删除用户可以从用户界面的ListView中选择的项目。 ListView仅包含显示IP地址的文本视图。现在，当我按下“删除”按钮时，我想从ListView中删除所选项目

现在，我通过使用保存项目索引的ArrayList来跟踪所选项目。我已经将ListView的choiceMode设置为multipleEchoice，因此这些索引应该是准确的。 我不知道最好的方法，但我的方法如下：

mEndPointList.setOnItemClickListener(new OnItemClickListener(){
    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1,
            int arg2, long arg3){
        boolean found = false;
        int index = 0;
        while(!found && index >= 0 && index < mSelectedItems.size()){
            if(mSelectedItems.get(index).intValue() == arg2){
                found = true;
            }
            index++;
        }
        if(!found){
            mSelectedItems.add(new Integer(arg2));
        }
    }
});

public class RemoveItemButtonHandler implements OnClickListener{
    @Override
    public void onClick(View v){
        for(int index = 0; index < mSelectedItems.size(); index++){
            int selectedItemIndex = mSelectedItems.get(index);
            mEndPointList.removeViews(selectedItemIndex, 1);
        }

        mSelectedItems.clear();
        mEndPointList.postInvalidate();
    }
}

public class RemoveItemButtonHandler implements OnClickListener{
    @Override
    public void onClick(View v){
        // Check to see if any items are selected.
        if(mSelectedItems.size() == 0){
            String message = "No items selected.\nTo select, press once on item.\n" +
                             "To unselect, press item again.";
            Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
            return;
        }
        // Sort the selected item indexes from high to low to prevent List corruption.
        Collections.sort(mSelectedItems, new DescendingComparator());
        /* Iterate through the selected items and remove items from the EndPoint List
         * using the selected item index. Corruption of the List is prevented by
         * sorting the selected items list from high to low, thus the item with the
         * highest index is removed first. */
        if(mRawEndPoints.size() > 1){
            for(int index = 0; index < mSelectedItems.size(); index++){
                int selectedItemIndex = mSelectedItems.get(index);              
                mRawEndPoints.remove(mListAdapter.getItem(selectedItemIndex));
            }
            // Update the Adapter to notify it's data has changed.
            mListAdapter.notifyDataSetChanged();
        } else {
            String message = "Cannot remove last item from the list.";
            Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
        }
        // Clear the List of selected items for a fresh selection.
        mSelectedItems.clear();
    }
}

移除项目的操作如下所示：

mEndPointList.setOnItemClickListener(new OnItemClickListener(){
    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1,
            int arg2, long arg3){
        boolean found = false;
        int index = 0;
        while(!found && index >= 0 && index < mSelectedItems.size()){
            if(mSelectedItems.get(index).intValue() == arg2){
                found = true;
            }
            index++;
        }
        if(!found){
            mSelectedItems.add(new Integer(arg2));
        }
    }
});

public class RemoveItemButtonHandler implements OnClickListener{
    @Override
    public void onClick(View v){
        for(int index = 0; index < mSelectedItems.size(); index++){
            int selectedItemIndex = mSelectedItems.get(index);
            mEndPointList.removeViews(selectedItemIndex, 1);
        }

        mSelectedItems.clear();
        mEndPointList.postInvalidate();
    }
}

public class RemoveItemButtonHandler implements OnClickListener{
    @Override
    public void onClick(View v){
        // Check to see if any items are selected.
        if(mSelectedItems.size() == 0){
            String message = "No items selected.\nTo select, press once on item.\n" +
                             "To unselect, press item again.";
            Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
            return;
        }
        // Sort the selected item indexes from high to low to prevent List corruption.
        Collections.sort(mSelectedItems, new DescendingComparator());
        /* Iterate through the selected items and remove items from the EndPoint List
         * using the selected item index. Corruption of the List is prevented by
         * sorting the selected items list from high to low, thus the item with the
         * highest index is removed first. */
        if(mRawEndPoints.size() > 1){
            for(int index = 0; index < mSelectedItems.size(); index++){
                int selectedItemIndex = mSelectedItems.get(index);              
                mRawEndPoints.remove(mListAdapter.getItem(selectedItemIndex));
            }
            // Update the Adapter to notify it's data has changed.
            mListAdapter.notifyDataSetChanged();
        } else {
            String message = "Cannot remove last item from the list.";
            Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
        }
        // Clear the List of selected items for a fresh selection.
        mSelectedItems.clear();
    }
}

请注意，DegeneratingComparator类是一个自定义类，它实现了Comparator接口。

调用列表适配器的notifyDataSetChanged，而不是调用列表的postInvalidate方法

---

哦，等等。。。我只是重读了你的代码。您正试图从列表中删除视图：S您决不能这样做。ListView只是一个显示数据的小部件；该数据由适配器支持，适配器是数据实际所在的位置。在您的情况下，您需要做的是从阵列中删除项，然后使用适配器通知更改；这最终将导致列表视图被更新。

对不起，我不是有意添加另一条评论。。。但是当我试图通过ListAdapter=mEndPointList.getAdapter；获取它时；，它不会让我改变。我猜这是从扩展ListActivity而不是Activity开始的函数，但我不想这样做……您是如何填充列表的？你一定用过适配器，对吗？粘贴该部件的代码。通常不需要使用getAdapter方法，而是使用用于填充列表视图的适配器对象；EndpointList.setAdapternew ArrayAdapterthis，R.layout.list_项，rawEndPoints；我已经尝试了你发布的内容，但它不允许我调用notifyDataSetChanged。而且，为了让事情更简单，不要匿名使用适配器。创建一个字段变量以保存适配器的实例，以便轻松使用notifyDataSetChanged。