在JavaFX中的可编辑TableView中处理单元格编辑

Question

I was created a Editable TableView, but don't know how to handle the cell data. For example, when user edit a cell and enter an empty string, how to alert them and set the field to old value? I tried textField.getText().equals(""), but it doesn't work.

private void createTextField() {
        textField = new TextField(getString());
        textField.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2);
        textField.setOnKeyReleased(new EventHandler<KeyEvent>() {
            @Override
            public void handle(KeyEvent t) {
                if (t.getCode() == KeyCode.ENTER) {
                    if (textField.getText().equals("")) {
                        cancelEdit();
                    }else commitEdit(textField.getText());
                }
            }
        });

Answer 1

By handling it immediately I guess you meant this

    textField.setOnKeyReleased(new EventHandler<KeyEvent>() {
        @Override
        public void handle(KeyEvent t) {
            if (textField.getText().equals("")) {
                cancelEdit();
            }
            else if (t.getCode() == KeyCode.ENTER) {
                commitEdit(textField.getText());
            }
        }
    });