从Android中的SQL查询中的CursorAdapter支持的Spinner获取String值

Question

我的代码在这里是非常错误的,我不确定你会如何正确地做到这一点.我有一个Spinner,它通过CursorAdapter从SQLite数据库查询填充.我需要获取当前所选项目的文本(值).我试过这个垃圾:

((Cursor)prdSpn.getItemAtPosition(prdSpn.getSelectedItemPosition())).getString(prdSpn.getSelectedItemPosition())

获取文本,但每次都崩溃.这样做的正确方法是什么？这里有一些可能相关的附加代码:

/// qc defined above as a SimpleCursorAdapter
/////////setup product selection spinner from db
prdSpn = (Spinner)findViewById(R.id.prd_spn);
Cursor prdCur = null;
try {
    prdCur = mDb.query(smsDbSchema.ProductSchema.TABLE_NAME, null, null, null, null, null, null);
} catch(Exception e) {
    Log.e("smsdb", e.toString());
}
prdCur.moveToFirst();
startManagingCursor(prdCur);
qc = new SimpleCursorAdapter(
    this,
    android.R.layout.simple_spinner_item,
    prdCur,
    new String[] {smsDbSchema.ProductSchema.COLUMN_NAME},
    new int[] {android.R.id.text1}
);
qc.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
prdSpn.setAdapter(qc);

Answer 1

代码类似于以下作品给我...

Cursor theCursor = qc.getCursor();
String theString = theCursor.getString(theCursor.getColumnIndex(<your column name here>));

由moonlightcheese编辑:

执行:

Cursor theCursor = (Cursor)prdSpn.getSelectedItem();
Log.e("spnERRtest", "Item: " + theCursor.getString(theCursor.getColumnIndex(smsDbSchema.ProductSchema.COLUMN_NAME)));
//theCursor.getString(theCursor.getColumnIndex(smsDbSchema.ProductSchema.COLUMN_NAME)).contains("CAR")