[英]Getting the row ID of a listview from a Android SQlite database
I have created a listview which displays all the people in the database. 我创建了一个列表视图,该视图显示数据库中的所有人员。 But how do I get the row id of the one I select so I can pass that infomation to the next activity.
但是,如何获取所选的行ID,以便将信息传递给下一个活动。
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.load_game1);
listContent = (ListView)findViewById(R.id.contentlist);
mDbAdapter = new DbAdapter(this);
mDbAdapter.open();
Cursor cursor = mDbAdapter.fetchAll();
startManagingCursor(cursor);
String[] from = new String[]{DbAdapter.KEY_NAME, DbAdapter.KEY_ROWID};
int[] to = new int[]{R.id.text};
cursorAdapter = new SimpleCursorAdapter(this, R.layout.row, cursor, from, to);
listContent.setAdapter(cursorAdapter);
mDbAdapter.close();
}
Which displays displays http://i.minus.com/iGEtGKGyF1Wgc.png 哪个显示屏显示http://i.minus.com/iGEtGKGyF1Wgc.png
Now I want to click on a name get that row id from the database. 现在,我想单击一个名称,从数据库中获取该行ID。
使用此API调用: cursorAdapter.getItemId(positionInListView)
Use setOnItemClickListener
on your Listview
then you will get the id of the selected item (item id start from 0 but Database _id column is start from 1 so you should send id+1
, please confirm this). 在
Listview
上使用setOnItemClickListener
,然后您将获得所选项目的ID(项目ID从0开始,但Database _id列从1开始,因此您应该发送id+1
,请确认)。
And send the id using intents. 并使用意图发送ID。
You have to register implement and add an OnItemClickListener to the list so you can react when an item was clicked. 您必须注册工具并将一个OnItemClickListener添加到列表中,以便您可以在单击某个项目时做出反应。 The item id will be passed into the onListItemClick() method of the OnItemClickListener.
商品ID将传递到OnItemClickListener的onListItemClick()方法中。
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