Initialize Spinner control in fxml

Question

New JDK is here:

JDK 8u40 release includes new JavaFX UI controls; a spinner control, formatted-text support, and a standard set of alert dialogs.

I want to initiliaze the Spinner with an IntegerSpinnerValueFactory in fxml. I tried like the following:

<Spinner><valueFactory><SpinnerValueFactory ???????? /></valueFactory></Spinner>

There is little documentation for the new control and considering that is only java in class coding.

Any idea of how to initialize it?

score 9 · Accepted Answer · edited May 23 '17 at 10:28

If you have a look at the Spinner class, you have several constructors available.

For instance:

public Spinner(@NamedArg("min") int min,
               @NamedArg("max") int max,
               @NamedArg("initialValue") int initialValue) {
    this((SpinnerValueFactory<T>)new SpinnerValueFactory.IntegerSpinnerValueFactory(min, max, initialValue));
}

According to this answer:

The @NamedArg annotation allows an FXMLLoader to instantiate a class that does not have a zero-argument constructor.

so you can use min, max and initialValue as parameters for the Spinner on your FXML file:

<Spinner fx:id="spinner" min="0" max="100" initialValue="3" >
      <editable>true</editable>
</Spinner>

Note that your IDE may complain about it with warnings about Class javafx.scene.control.Spinner doesn't support property 'min'... But you can build and run the project.

Used it on my fxml like `` But it's not truly editable. It just returns to previous value before typing the desired value and using the increment/decrement arrows. I will just keep using my custom control until I fully figure out how to achieve my desired behaviour with Spinner. Thanks — Arikado, Mar 05 '15 at 16:24

Initialize Spinner control in fxml

1 Answers1