spinner（SimpleCursorAdapter）数据库查询、获取所选中的值

/*
* 数据库查询
*/
public Cursor queryData(String queryString) {
database = SQLiteDatabase.openOrCreateDatabase(query_path, null);
Cursor cursor = database.rawQuery(queryString, null);
return cursor;// 返回游标
}

Cursor cursor=queryData("select _id,name from cropUseRate");
if(cursor!=null){
SimpleCursorAdapter adapter=new SimpleCursorAdapter(MainActivity.this, android.R.layout.simple_spinner_item, cursor,
new String[]{"name"}, new int[]{android.R.id.text1}, 0);
adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
spinner1.setAdapter(adapter);
}
}

spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {

@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub

Cursor cursor=(Cursor)spinner1.getSelectedItem();
s=cursor.getString(1);
System.out.println(s);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub

}
});