6

我正在像这样从数据库中填充一个微调器

    // Populating the City Spinner
    Cursor cities = db.cityList();
    startManagingCursor(cities);

    // create an array to specify which fields we want to display
    String[] from = new String[] { DBAdapter.KEY_NAME };
    // create an array of the display item we want to bind our data to
    int[] to = new int[] { android.R.id.text1 };

    Spinner cityList = (Spinner) this.findViewById(R.id.citySpiner);
    SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, cities, from, to);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    cityList.setAdapter(adapter);

当我尝试像这样从微调器的选定项目中获取内容时

// Get the City
                Spinner getCity = (Spinner) findViewById(R.id.citySpiner);
                String cityName = getCity.getSelectedItem().toString();

我得到以下信息。有没有办法从数据库中获取城市名称或城市 ID。

在此处输入图像描述

4

5 回答 5

8

我认为，当您使用 customadapter 并在适配器中提供三个列表时...

您不能简单地通过调用 getSelectedItem().. 来获取选定的文本。

用这个：

Spinner mySpinner = (Spinner)findViewbyId(R.id.spinner);
int position = mySpinner.getSelectedItemPosition();
String Text = yourCityList[position].toString(); // dont know which list is holding the city list... 
// i didn't use any db in any of my app so cant tell you how can you get list... 
// leaving it to you... :)

希望能帮助到你....

于 2011-04-29T16:49:48.563 回答
5

只需从微调器中获取适配器并从光标中获取字符串

Cursor cursor = (Cursor) myAdapter.getItem(position);
String cityName = cursor.getString(cursor.getColumnIndex(DBAdapter.KEY_NAME));
于 2011-04-28T12:51:14.363 回答
1 
    List<String> list = new ArrayList<String>();
    s = (Spinner)findViewById(R.id.spinner1);
    SQLiteDatabase sqldb = db.openDataBase();
    Cursor cr = sqldb.rawQuery("select Name from employee",null);
    if (cr.moveToFirst()) {
        do {
        list.add(cr.getString(0).toString());
        Toast.makeText(this,cr.getString(0).toString(),Toast.LENGTH_LONG).show();
        ArrayAdapter <String> a= new ArrayAdapter(this, android.R.layout.simple_spinner_item,list);
         a.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
          s.setAdapter(a);
        } while (cr.moveToNext());

      }//urvesh patel
于 2011-07-08T11:11:58.370 回答
0

我实现它的方式是这样的：

您必须将 getItem() 方法强制转换为游标，因为它本质上只是返回一个游标而不是游标中的单个行，这很烦人。

final Cursor cursor = (Cursor) yourSpinner.getAdapter().getItem( position );

将光标移动到第一行

cursor.moveToFirst();

现在，您可以使用与设置旋转器适配器时最初查询的表匹配的列名从光标中获取字符串，该适配器是使用 getAdapter() 获取的

final String selectedPartUUID = cursor.getString( cursor.getColumnIndex( TABLE_COLUMN_NAME ) );

希望这会有所帮助，并会感谢任何反馈:)

于 2013-12-02T16:40:01.863 回答
0

希望这可以帮助！！

Toast.makeText(getApplicationContext(), "getSelectedItem=" + spinnerString, Toast.LENGTH_SHORT).show();
            Toast.makeText(getApplicationContext(), "getSelectedItemPosition=" + nPos, Toast.LENGTH_SHORT).show();
于 2015-01-10T14:20:14.410 回答