Android从列表视图中获取数据

概述我目前正在用清单视图对一个APP进行编程,该清单视图充满了来自SQLite表的数据,如下所示：publicvoidprintDatabase(){Cursorc=handler.getAllRows();String[]fieldNames=newString[]{DBHandler.COLUMN_WORKER_ID,DBHandler.COLUMN_WORKER_NAME,DBHandler.COL

我目前正在用清单视图对一个APP进行编程,该清单视图充满了来自sqlite表的数据,如下所示：

public voID printDatabase(){    Cursor c = handler.getAllRows();    String[] fIEldnames = new String[] {DBHandler.ColUMN_WORKER_ID, DBHandler.ColUMN_WORKER_name, DBHandler.ColUMN_WORKER_SURname, DBHandler.ColUMN_WORKER_COST};    int[] toVIEw = new int[] {R.ID.item_worker_ID, R.ID.item_worker_name, R.ID.item_worker_surname, R.ID.item_worker_cost};    SimpleCursorAdapter cAdapter;    cAdapter = new SimpleCursorAdapter(getBaseContext(), R.layout.worker_items, c, fIEldnames, toVIEw, 0);    List = (ListVIEw) findVIEwByID(R.ID.worker_ListVIEw);    List.setAdapter(cAdapter);}

现在,我想通过单击项目从列表视图中获取数据.我到处搜索以找到解决方案,结果如下：

class ItemListener implements AdapterVIEw.OnItemClickListener{    @OverrIDe    public voID onItemClick(AdapterVIEw<?> adapterVIEw, VIEw vIEw, int i, long l) {        Object o = List.getItemAtposition(i);        String s = List.toString();    }}

但是我从中得到的只是对我用于填充列表视图的游标的引用.我需要什么来从列表视图中获取数据？

解决方法:

您已经解决了一半.

Cursor itemCursor = (Cursor) List.getItemAtposition(i);

这将为您返回一个光标,该光标指向被单击的行.您可以像这样获取数据：

class ItemListener implements AdapterVIEw.OnItemClickListener {    @OverrIDe    public voID onItemClick(AdapterVIEw<?> adapterVIEw, VIEw vIEw, int i, long l) {        Cursor itemCursor = (Cursor) List.getItemAtposition(i);        String workerID = itemCursor.getString(itemCursor.getColumnIndex(DBHandler. ColUMN_WORKER_ID));        String workername = itemCursor.getString(itemCursor.getColumnIndex(DBHandler.ColUMN_WORKER_name));        String workerSurname = itemCursor.getString(itemCursor.getColumnIndex(DBHandler.ColUMN_WORKER_SURname));        String workerCost = itemCursor.getString(itemCursor.getColumnIndex(DBHandler.ColUMN_WORKER_COST));    }}

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