![](/img/trans.png)
[英]How to delete item from ListView while using Custom ArrayAdapter w/ Dialog
[英]How to delete item from listview using own ArrayAdapter?
我有问题,我想从ArrayList中删除一行眉形listView和此元素。
这是我的新ArrayAdapter
private ExpenditureAdapter adapter = null;
我使用以下方法向其中添加数据:
adapter = new ExpenditureAdapter(this,R.layout.activity_show_list,addExpenditure.getExpidentures());
setListAdapter(adapter);
它可以正常工作,但是我想创建OnItemClickListener
并使用它从listView
和ArrayList<Expenditure>
删除数据,但是该怎么做呢?
我的努力:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
addExpenditure.getExpidentures().remove();
}
});
但是ofc不起作用。如何获取索引来删除它?
尝试这个
YourListView.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> adapter, View v, int position,
long arg3)
{
YourArrayList.remove(position);
YourArrayAdapter.notifyDataSetChanged();
}
});
您几乎可以正常工作,将听众更改为:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
addExpenditure.getExpidentures().remove(position);
parent.notifyDataSetChanged();
}
});
基本上,如果要更改适配器(您的ArrayList)的基础数据,则需要通知适配器,以便它可以相应地更新列表。 这将删除该项目,然后重新绘制列表。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.