从数据库中的Andr​​oid SimpleCursorAdapter ID [英] Android SimpleCursorAdapter ID from Database

问题描述

我有几分的问题在我开发的应用程序。
所以，我所有的表都有主键_id领域，我用SimpleCursorAdapter将它们绑定到列表视图和纱厂。
我想知道的是，我怎么能在ListView或微调选择的项目有相同的ID作为相应的行？

I'm having somewhat of an issue in an application I'm developing. So, all my tables have _id fields for primary keys, and I use SimpleCursorAdapter to bind them to ListViews and Spinners. What I wanted to know is how can I make the ListView or Spinner selected item have the same ID as the corresponding row?

但奇怪的是，这个工程使用ContextMenu，我现在用直记事本的例子：

The strange thing is that this works with the ContextMenu, which I am using straight of the NotePad example:

AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
info.id

此ID字段的是一样rowid的桌子上，我可以删除项目很好，但是当我尝试这样的事：

This ID field IS the same as the RowID on the table, and I can delete items fine, but when I try something like this:

getListView().setOnItemClickListener(new OnItemClickListener() {

        public void onItemClick(AdapterView<?> adapter, View view,
                int position, long arg) {
            Intent i = new Intent(getApplicationContext(),
                    FuelingList.class);
            long id = view.getId();

ID字段是一些随机rubberish。
所以我的问题是，在第一code位，标识是什么的 AdapterContextMenuInfo 的获取和我怎么能找回它在我的code的其他部分？

The ID field is some random rubberish. So my question is, in the first code bit, what Id is the AdapterContextMenuInfo getting and how can I retrieve it in other parts of my code?

推荐答案

由于您使用的是SimpleCursorAdapter，该onItemClick正在通过数据库行ID到你..

Since you are using a SimpleCursorAdapter, the onItemClick is passing the database row id in to you..

        public void onItemClick(AdapterView<?> adapter, View view, int position, long arg)  

的长ARG 部分实际上是从数据库中的行ID。

The long arg part is actually your row id from the database.

所以你的code应该是：

So your code should be:

getListView().setOnItemClickListener(new OnItemClickListener() { 
     public void onItemClick(AdapterView<?> adapter, View view, 
            int position, long arg) { 
        Intent i = new Intent(getApplicationContext(), 
                FuelingList.class); 
        long id = arg; 

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