0
Ich mache eine Einkaufsliste App, und es hat die Funktion, Elemente zur Liste (eine Tabellenansicht) zusammen mit der Anzahl der Artikel und Preis. Die Sache ist, es funktioniert (weil die Tabellenansicht nicht sagt "Kein Inhalt in der Tabelle") Aber die Tabelle ist leer. Irgendwelche Vorschläge? Code:Beim Versuch, Elemente zu einem JavaFX TableView durch eine ObservableList hinzuzufügen, werden die TableView Elemente nicht angezeigt.
package listproject;
public class Main extends Application{
public Node getNodeByRowColumnIndex(final int row,final int column,GridPane gridPane) {
Node result = null;
ObservableList<Node> childrens = gridPane.getChildren();
for(Node node : childrens) {
if(gridPane.getRowIndex(node) == row && gridPane.getColumnIndex(node) == column) {
result = node;
break;
}
}
return result;
}
ObservableList<Product> data =
FXCollections.observableArrayList(
);
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("Grocery List");
primaryStage.setWidth(450);
primaryStage.setHeight(800);
//menu buttons
Button addLinkMain = new Button("Add an Item");
Button addLinkTitle = new Button("Add an Item");
Button mainLinkAdd = new Button("Back");
Button mainLinkTitle = new Button("Back");
Button addItem = new Button("Add");
Button setTitleMenu = new Button("Set Title");
Button setTitleAdd = new Button("Set Title");
Button clear = new Button("Clear");
//items for the item addition screen
TextField title = new TextField("Name");
TextField quantity = new TextField("#");
TextField price = new TextField("$");
HBox addBox = new HBox();
BorderPane addBorder = new BorderPane();
HBox addMenu = new HBox();
//mainScene items
BorderPane pane = new BorderPane();
HBox mainscenemenu=new HBox();
TableView<Product> tableview = new TableView<Product>();
//tableview items
TableColumn itemTitle=new TableColumn("Product");
TableColumn itemQuantity=new TableColumn("Quantity");
TableColumn itemPrice=new TableColumn("Price");
//settitle items
TextField listTitle= new TextField("Rename the List");
Button setTittle = new Button("Set List Title");
BorderPane setTitlePane=new BorderPane();
StackPane setTitleFieldContainer=new StackPane();
HBox setTitleOwnMenu = new HBox();
//Scene declaration
Scene mainScene = new Scene(pane);
primaryStage.setScene(mainScene);
Scene addScene = new Scene(addBorder);
Scene setTitleScene = new Scene(setTitlePane);
//Main Scene
pane.setCenter(tableview);
pane.setBottom(mainscenemenu);
tableview.getColumns().addAll(itemTitle,itemQuantity,itemPrice);
mainscenemenu.getChildren().addAll(setTitleMenu,clear,addLinkMain);
tableview.setItems(data);
//Item Addition Scene
addBox.getChildren().addAll(title,quantity,price);
addMenu.getChildren().addAll(mainLinkAdd,addItem,setTitleAdd);
addBorder.setCenter(addBox);
addBorder.setBottom(addMenu);
//Set Title Scene
setTitleFieldContainer.getChildren().addAll(listTitle);
setTitleOwnMenu.getChildren().addAll(addLinkTitle,setTittle,mainLinkTitle);
setTitlePane.setCenter(setTitleFieldContainer);
setTitlePane.setBottom(setTitleOwnMenu);
//Menu Button Event Handlers
addLinkMain.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
primaryStage.setScene(addScene);
}
});
addLinkTitle.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
primaryStage.setScene(addScene);
}
});
mainLinkAdd.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
primaryStage.setScene(mainScene);
}
});
mainLinkTitle.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
primaryStage.setScene(mainScene);
}
});
setTitleMenu.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
primaryStage.setScene(setTitleScene);
}
});
setTitleAdd.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
primaryStage.setScene(setTitleScene);
}
});
//Adding an Item to the List *unfinished
addItem.setOnAction(new EventHandler<ActionEvent>(){
@Override
public void handle(ActionEvent event) {
data.add(new Product(title.getText(),quantity.getText(),price.getText()));
}
});
//Changing the Title of The List
setTittle.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
primaryStage.setTitle(listTitle.getText());
}
});
//Clearing the List
clear.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
tableview.getItems().clear();
}
});
//Show the Stage
primaryStage.show();
}
public static void main(String[] args){
launch(args);
}
}