Autoselect first Item of a ListView in JavaFX

Question

I created a ListView, but when I open it, no elements are selected. How can I autoselect the first item that get loaded? I'm asking this because I'm trying to create an email client and I need that when the user opens the program the informations of the first email must be automatically loaded. This is my code:

public class ListController {

@FXML
private ListView<Email> listView;
private DataModel model;

public void initModel(DataModel model) {
    if (this.model != null) {
        throw new IllegalStateException("Model can only be initialized once");
    }
    this.model = model;
    model.loadData(null);
    listView.setItems(model.getEmailList());
    listView.getSelectionModel().selectedItemProperty().addListener((obs, oldSelection, newSelection)
            -> model.setCurrentEmail(newSelection));

    model.currentEmailProperty().addListener((obs, oldEmail, newEmail) -> {
        if (newEmail == null) {
            listView.getSelectionModel().clearSelection();
        } else {
            listView.getSelectionModel().select(newEmail);
        }
    });

    listView.setCellFactory(lv -> new ListCell<Email>() {
        @Override
        public void updateItem(Email mail, boolean empty) {
            super.updateItem(mail, empty);
            if (empty) {
                setText(null);
            } else {
                setText(mail.getMittente());
            }
        }
    });
}

EDIT: @Gnas This is my code now, but it stil doesn't works:

public class ListController {

@FXML
private ListView<Email> listView;
private DataModel model;

public void initModel(DataModel model) {
    if (this.model != null) {
        throw new IllegalStateException("Model can only be initialized once");
    }
    this.model = model;
    model.loadData(null);
    listView.setItems(model.getEmailList());
    if (!listView.getItems().isEmpty()) {
        listView.getSelectionModel().select(0);
    }

    listView.setCellFactory(lv -> new ListCell<Email>() {
        @Override
        public void updateItem(Email mail, boolean empty) {
            super.updateItem(mail, empty);
            if (empty) {
                setText(null);
            } else {
                setText(mail.getMittente());
            }
        }
    });
}

EDIT2:

public void start(Stage stage) throws Exception {
    FXMLLoader listLoader = new FXMLLoader(getClass().getResource("lista.fxml"));
    FXMLLoader menuLoader = new FXMLLoader(getClass().getResource("menubar.fxml"));
    FXMLLoader textareaLoader = new FXMLLoader(getClass().getResource("textarea.fxml"));
    FXMLLoader fieldLoader = new FXMLLoader(getClass().getResource("textfield.fxml"));
    FXMLLoader buttonLoader = new FXMLLoader(getClass().getResource("button.fxml"));

    AnchorPane root = new AnchorPane(listLoader.load(), textareaLoader.load(), fieldLoader.load(), menuLoader.load(), buttonLoader.load());

    ListController listController = listLoader.getController();
    MenuBarController menuController = menuLoader.getController();
    TextAreaController textareaController = textareaLoader.getController();
    TextFieldController fieldController = fieldLoader.getController();
    ButtonController buttonController = buttonLoader.getController();

    DataModel model = new DataModel();
    listController.initModel(model);
    menuController.initModel(model);
    textareaController.initModel(model);
    fieldController.initModel(model);
    buttonController.initModel(model);

    Scene scene = new Scene(root, 603, 403);
    stage.setScene(scene);
    stage.show();
}

Try here: https://stackoverflow.com/questions/11088612/javafx-select-item-in-listview — Hades, Nov 22 '18 at 11:18

score 4 · Answer 1 · answered Nov 22 '18 at 11:21

4

You're alreading using listView.getSelectionModel().select(newEmail) which is the same method you would use to do what you want. Just call this after you initialize the item list and replace newEmail by the index of the first item, which is 0.

listView.setItems(model.getEmailList());

// assuming the list is never null
if (!listView.getItems().isEmpty()) {
    listView.getSelectionModel().select(0);
}

answered Nov 22 '18 at 11:21

Gnas

698
1
6
14

Are there any exceptions thrown? Does the list have some items but the first one isn't selected? – Gnas Nov 22 '18 at 11:31
No Exceptions. The list has more than 5 items but no one is selected. – Samoa Joe Nov 22 '18 at 11:36
Can you provide the code where you call `initModel` and what you do afterwards? – Gnas Nov 22 '18 at 11:44
Can you check what `listView.getSelectionModel().getSelectedIndex()` returns? If it's >= 0 it means it's working. – Gnas Nov 22 '18 at 11:52
Yes, it returns 0. – Samoa Joe Nov 22 '18 at 12:05
@SamoaJoe So it's correctly selected, your problem is something else now – Gnas Nov 22 '18 at 12:19

score 0 · Answer 2 · edited Sep 06 '22 at 10:04

0

Try this

listView.getSelectionModel().selectFirst();

edited Sep 06 '22 at 10:04

Nishant Lakhara

2,295
4
23
46

answered Aug 29 '22 at 16:33

S. Sami

13
1
6

While this code may solve the question, [including an explanation](//meta.stackexchange.com/q/114762) of how and why this solves the problem would really help to improve the quality of your post, and probably result in more up-votes. Remember that you are answering the question for readers in the future, not just the person asking now. Please [edit] your answer to add explanations and give an indication of what limitations and assumptions apply. – Adrian Mole Sep 04 '22 at 13:22

score -1 · Answer 3 · answered Jul 26 '19 at 11:50

-1

You can use getSelectionModel().select(0) But you have to make sure you use it right after you've added the elements to the list.

answered Jul 26 '19 at 11:50

sasieightynine

434
1
5
16

nothing new to the other answer, is there? And the OP reported, that it doesn't work in his context. No way to know what's going wrong without him providing a [mcve] but also no reason to duplicate the essence of an another answer ... – kleopatra Jul 27 '19 at 09:24

Autoselect first Item of a ListView in JavaFX

3 Answers3