QTableWidget 不显示数据

EqList::EqList(QWidget *parent)
    :QWidget(parent),ui(new Ui::EqList())
{
    ui->setupUi(this);

}

void EqList::init()
{
    ui->statusLabel->setText("hehe");
    int row = ui->eqListTableWidget->rowCount();
    QTableWidgetItem *item = new QTableWidgetItem(tr("01"));
    ui->eqListTableWidget->setItem(row,0,item);
    ui->eqListTableWidget->setItem(row,1,new QTableWidgetItem("administrator"));
    ui->eqListTableWidget->setItem(row,2,new QTableWidgetItem("fad;fjkajflkajlkdsfjlasjflkas"));
}
void MainWindow::onEqList()
{
    m_eqListDlg = new EqList;
    m_eqListDlg->init();
    m_eqListDlg->show();
}

执行时，eqListTableWidget本该显示的字符串却没有，不知道问题出在哪了 QTableWidget 不显示内容 求助
[解决办法]
ui->eqListTableWidget->setRowCount(1);
ui->eqListTableWidget->setColumnCount(3);
QTableWidgetItem *item = new QTableWidgetItem("01");
ui->eqListTableWidget->setItem(0, 0, item);
ui->eqListTableWidget->setItem(0, 1, new QTableWidgetItem("administrator"));
ui->eqListTableWidget->setItem(0, 2, new QTableWidgetItem("fad;fjkajflkajlkdsfjlasjflkas"));