Question

我有一个表（类别），它有两列（_id，name）。

我有一个显示列名称的微调器。

现在，我需要将列：“_ id”插入到另一个表中......但我不知道该怎么做。

有什么建议吗？

我粘贴我正在使用的代码：

public Cursor recuperaCategoria()
    {
    final UsuariosSQLiteHelper usdbh =new UsuariosSQLiteHelper(this, "DBLlistaCompra", null, 1);
    final SQLiteDatabase db = usdbh.getWritableDatabase();
    String tableName = "Categorias";
    String[] columns = {"_id","Nombre"};

    return db.query(tableName, columns, null, null, null, null, null);
    }

public void recCatSpinner() {
        final Spinner addCatSpinner = (Spinner) findViewById(R.id.spIdCategoria);
        catCursor = recuperaCategoria();
        catCursor.moveToPosition(1);
        catAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item);  
        addCatSpinner.setAdapter(catAdapter);
        if (catCursor.moveToFirst()) { 
          do { 

             catAdapter.add(catCursor.getString(1)); 
             Valor = catCursor.getString(1); 
             Log.v("valor Add Cat 100", Valor);
         } 
          while (catCursor.moveToNext()); 
            int id = catCursor.getInt(0);
            String name = catCursor.getString(1);

          Log.v("Dentro cursor","1");
          if (db != null) { 
          Toast.makeText(getBaseContext(),catCursor.getString(0),Toast.LENGTH_SHORT).show();

          db.close(); 
          } 
        } 
        startManagingCursor(catCursor);
        //catCursor.close();
        addCatSpinner.setOnItemSelectedListener(
                new AdapterView.OnItemSelectedListener() {
                    public void onItemSelected(AdapterView<?> parent,
                        View view2, int pos, long id) {
                        //recID();
                        valor = parent.getItemAtPosition(pos).toString();
                        Log.v("valor Add Cat", valor);

                        }
                  public void onNothingSelected(AdapterView<?> parent) {
                       // view.setText("nada");
                    }
                });
        catCursor.close();
}

当我从微调器中选择一个项目（它显示“Nombre”列）时，我想这样，我将光标“_id”中的第一列保存到一个变量中。

Answer 1

将值读取到集合，然后编写脚本以将其插入另一个taBLE

SQLiteDatabase db = getReadableDatabase();
String[] columns = { _id };
String selection = "column_name" + "=?";
String orderBy = "_id ASC";
String[] selectionArgs = new String[] { "something" };
String groupBy = null;
String having = null;

Cursor cursor = db.query("table_name", "columns", selection, selectionArgs, groupBy, having, orderBy);

while(cursor.moveToNext()) {

   int id = cursor.getInt(0);
   String name = cursor.getString(1);

   // Add values to a collection
}
if(db.isOpen()) db.close();

SQLiteDatabase db = getWritableDatabase();

for(int id : idCollection) {

  ContentValues values = new ContentValues();
  values.put("_id",   id);

  try {

    int id = db.insertOrThrow(TABLE_NAME, null, values);
  }
  catch (SQLException sqlEx) {

    // do something with exception
  } 
}

if(db.isOpen()) db.close();

将第一列微调器插入表中

1 个答案: