长按侦听器删除列表对话框中的项目

Question

我正在使用一个对话框 ，显示我的代码是字符串列表的项目

 final CharSequence[] items = {"1", "2", "3"};

            AlertDialog.Builder builder = new AlertDialog.Builder(Activity.this);
            builder.setItems(items, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int item) {
                    Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
                }

            }).show();

现在我的问题是如何实现onLongClicklistener方法以删除对话框看起来像图像中所示的选定项

Answer 1

您需要实现onItemLongClick方法，如下所示：

listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
    @Override
    public boolean onItemLongClick(AdapterView<?> av, View v, int pos, long id) {
        // TODO: Get the position of the item clicked. 
        //       Delete it from your collection eg.ArrayList.
        //       Call notifydatasetChanged so that it will refresh 
        //       the views displaying updated list.
        return true;
    }
});

Answer 2

1）在您的列表视图上设置一个ItemLongClickListener
2）从阵列中删除长按的项，这将填充列表适配器3）刷新适配器

public ListView listView;
public ArrayList<String> items;
public ArrayAdapter adapter;

listView.setOnItemLongClickListener(new OnItemLongClickListener(){ 
    @Override
    public boolean onItemLongClick(AdapterView<?> av, View v, int pos, long id) {
    String selectedItem = items.get(pos);
    items.remove(selectedItem);
    adapter.notifyDataSetChanged();
    return true;
    }
});