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Jérôme
Jérôme

Reputation: 27027

Populating JavaFX ComboBox or ChoiceBox from enum

Is there a way to populate a JavaFX ComboBox or ChoiceBox with all enumerations of a enum ?

Here is what I tried :

public class Test {

    public enum Status {
        ENABLED("enabled"),
        DISABLED("disabled"),
        UNDEFINED("undefined");

        private String label;

        Status(String label) {
            this.label = label;
        }

        public String toString() {
            return label;
        }
    }
}

In a another class, I'm trying to populate a ComboBox :

    ComboBox<Test.Status> cbxStatus = new ComboBox<>();
    cbxStatus.setItems(Test.Status.values());

But I get an error : incompatible types: Status[] cannot be converted to ObservableList<Status>

I obviously get the same problem with a ChoiceBox.

Upvotes: 26

Views: 30107

Answers (3)

rizcan
rizcan

Reputation: 57

I used FXML for this. My enum has a constructor

<ComboBox GridPane.rowIndex="0" GridPane.columnIndex="1">
     <items>
         <FXCollections fx:factory="observableArrayList">
             <Type fx:value="ABC"/>
             <Type fx:value="DEF"/>
             <Type fx:value="GHI"/>
         </FXCollections>
     </items>
</ComboBox>

public enum Type {
    ABC("abc"), 
    DEF("def"), 
    GHI("ghi");

    private String name;

    private Type(String theType) {
        this.name = theType;
    }
}

Upvotes: 6

Youssef Rajoul
Youssef Rajoul

Reputation: 44

You can change it to:

ComboBox<Status> cbxStatus = new ComboBox<>();
cbxStatus.getItems().setAll(Arrays.asList(Status.values()));

Upvotes: 0

Roland
Roland

Reputation: 18415

If setItems requires an ObservableList, then you have to give it one instead of an array.

Try this:

ComboBox<Status> cbxStatus = new ComboBox<>();
cbxStatus.setItems( FXCollections.observableArrayList( Status.values()));

Edit: The solution of James_D (see comment) is the preferred one:

cbxStatus.getItems().setAll(Status.values());

Upvotes: 37

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