如何从填充符onItemSelected事件填充的TextView中传递字符串，以便在DBController类中进行查询。我无法实现意图：
Main14Activity
Nidd.setText(imc_met.substring(imc_met.lastIndexOf("Id") + 3));
String ado = Nidd.getText().toString();
DBController
String selectQuery = "SELECT * FROM proinfo WHERE Name= " + .... ;
意图不起作用，因为我不知道如何使这个工作。函数getintent（）。在DB类中返回红色。
Main14Activity Code：
public class Main14Activity extends ListActivity {
TextView lbl;
DBController controller = new DBController(this);
ListView lv;
final Context context = this;
ListAdapter adapter;
ArrayList<HashMap<String, String>> myList;
ArrayList<String> myList1;
Spinner spinner12;
TextView Nidd;
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main142);
lbl = (TextView) findViewById(R.id.txtresulttext);
Nidd = (TextView) findViewById(R.id.Nidd);
lv = getListView();
spinner12 = (Spinner) findViewById(R.id.spinner12);
myList1 = controller.getAllProducts1();
Spinner My_spinner = (Spinner) findViewById(R.id.spinner12);
ArrayAdapter adapter1 = new ArrayAdapter(this, R.layout.spinner_row,
myList1);
My_spinner.setAdapter(adapter1);
controller = new DBController(getApplicationContext());
SQLiteDatabase db = controller.getWritableDatabase();
String tableName = "proinfo";
db.execSQL("delete from " + tableName);
try {
try {
String filename = "/Download/jobtex.csv";
String path = Environment.getExternalStorageDirectory() + filename;
FileReader file = new FileReader(path);
BufferedReader buffer = new BufferedReader(file);
ContentValues contentValues = new ContentValues();
String line = "";
db.beginTransaction();
while ((line = buffer.readLine()) != null) {
String[] str = line.split(",", 3); // defining 3 columns with null or blank field //values acceptance
//Job, Nid
// String company = str[0].toString();
String company = str[0].toString();
String Name = str[1].toString();
// String Price = str[2].toString();
contentValues.put("Company", company);
contentValues.put("Name", Name);
// contentValues.put("Price", Price);
db.insert(tableName, null, contentValues);
lbl.setText("Successfully Updated Database.");
}
db.setTransactionSuccessful();
db.endTransaction();
} catch (IOException e) {
if (db.inTransaction())
db.endTransaction();
Dialog d = new Dialog(this);
d.setTitle(e.getMessage().toString() + "first");
d.show();
// db.endTransaction();
}
myList = controller.getAllProducts();
if (myList.size() != 0) {
ListView lv = getListView();
ListAdapter adapter = new SimpleAdapter(Main14Activity.this, myList,
R.layout.v, new String[]{"Company", "Name"}, new int[]{
R.id.txtproductcompany, R.id.txtproductname});
setListAdapter(adapter);
lbl.setText("Data Imported");
myList1 = controller.getAllProducts1();
My_spinner = (Spinner) findViewById(R.id.spinner12);
adapter1 = new ArrayAdapter(this, R.layout.spinner_row,
myList1);
My_spinner.setAdapter(adapter1);
My_spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
String imc_met = spinner12.getSelectedItem().toString();
Nidd.setText(imc_met.substring(imc_met.lastIndexOf("Id") + 3));
String ado = Nidd.getText().toString();
Fragment fragment = new Fragment();
???????????????
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
} finally {
}
}
}
DBController：DB Class
public class DBController extends SQLiteOpenHelper {
private static final String LOGCAT = null;
public DBController(Context applicationcontext) {
super(applicationcontext, "PrdouctDB.db", null, 1); // creating DATABASE
Log.d(LOGCAT, "Created");
}
@Override
public void onCreate(SQLiteDatabase database) {
String query;
query = "CREATE TABLE IF NOT EXISTS proinfo ( Id INTEGER PRIMARY KEY, Company TEXT,Name TEXT)";
database.execSQL(query);
}
@Override
public void onUpgrade(SQLiteDatabase database, int version_old,
int current_version) {
String query;
query = "DROP TABLE IF EXISTS proinfo" ;
database.execSQL(query);
onCreate(database);
}
public ArrayList<HashMap<String, String>> getAllProducts() {
ArrayList<HashMap<String, String>> proList;
proList = new ArrayList<HashMap<String, String>>();
String selectQuery = "SELECT * FROM proinfo WHERE Name=" + ??????????????????? ;
SQLiteDatabase database = this.getWritableDatabase();
Cursor cursor = database.rawQuery(selectQuery, null);
if (cursor.moveToFirst()) {
do {
//Id, Company,Name,Price
HashMap<String, String> map = new HashMap<String, String>();
map.put("Id", cursor.getString(0));
map.put("Company", cursor.getString(1));
map.put("Name", cursor.getString(2));
// map.put("Price", cursor.getString(3));
proList.add(map);
} while (cursor.moveToNext());
}
return proList;
}
public ArrayList<String> getAllProducts1() {
ArrayList<String> proList1;
proList1 = new ArrayList<String>();
String selectQuery = "SELECT * FROM proinfo ";
SQLiteDatabase database = this.getWritableDatabase();
Cursor cursor = database.rawQuery(selectQuery, null);
if (cursor.moveToFirst()) {
do {
String add = "Job Id";
String as = "Site:";
String space = " ";
proList1.add( as + space + cursor.getString(1) + space + add + space + cursor.getString(2));
} while (cursor.moveToNext());
}
cursor.close();
database.close();
return proList1;
}
}