Question

我下载了这个数据库脚本，我想知道如何将其转换为将项目添加到列表视图中...这是一个非常容易理解的数据库代码..

http://www.anotherandroidblog.com/wp-content/uploads/2010/08/AABDatabase.zip

这是它的来源..

我也猜测它可能在这里？

/**
 * retrieves a row from the database with the id number in the corresponding
 * user entry field
 */
private void retrieveRow()
{
    try
    {
        // The ArrayList that holds the row data
        ArrayList<Object> row;
        // ask the database manager to retrieve the row with the given rowID
        row = db.getRowAsArray(Long.parseLong(updateIDField.getText().toString()));

        // update the form fields to hold the retrieved data
        updateTextFieldOne.setText((String)row.get(1));
        updateTextFieldTwo.setText((String)row.get(2));
    }
    catch (Exception e)
    {
        Log.e("Retrieve Error", e.toString());
        e.printStackTrace();
    }
}

Answer 1

要将数据库中的项目添加到ListView，您可以拥有一个ArrayList

1。）ArrayList<String> arrList = new ArrayList<String>();

2.。）从数据库中获取项目并将它们添加到ArrayList

        if(c.getCount() > 0){
            c.moveToFirst();
            for (int i = 0; i < c.getCount() - 1; i++) {
                arrList.add(c.getString(0));
                c.moveToNext();
            }

3。）Then populate the Adapter with the ArrayList(arrList).

4。）And fill the ListView with the Adapter.

数据库添加项目到列表视图？

1 个答案: