Android Spinner 所选项目

Question

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。

Answer 1

我认为，当您使用自定义适配器并在适配器中提供三个列表时...

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

使用这个:

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... :)

希望对你有帮助....