JavaFX选项卡式窗格,每个选项卡上都有一个表视图? [英] JavaFX tabbed pane with a table view on each tab?
问题描述
我有一个标签式窗格,每个标签上都有一个表格。我向表中添加了不同的项目,我只想让每个选项卡显示该表的各个项目。但没有任何表现。
当我调试时,我可以清楚地看到包含选项卡的选项卡窗格,其中包含包含正确项目的表视图。
I have a tabbed pane, with a table on each tab. I add different items to the tables and I just want each tab to show me the respective items of that table. But nothing shows up. When I debug I can clearly see the tab pane, that contains the tabs, that contains the table views, that contain the right items.
为什么这不起作用?!
谢谢!
primaryStage.setTitle("TEST");
Group root = new Group();
Scene scene = new Scene(root, 400, 300, Color.WHITE);
TableView tv1 = new TableView();
TableView tv2 = new TableView();
TableColumn<String, String> clmn = new TableColumn<>("Test");
clmn.setPrefWidth(230);
tv1.getColumns().addAll(clmn);
tv2.getColumns().addAll(clmn);
List<String> firstItems = new ArrayList<>();
firstItems.add("ONE");
firstItems.add("TWO");
firstItems.add("THREE");
tv1.setItems(FXCollections.observableArrayList(firstItems));
List<String> secondItems = new ArrayList<>();
secondItems.add("1");
secondItems.add("2");
secondItems.add("3");
tv2.setItems(FXCollections.observableArrayList(secondItems));
TabPane tabPane = new TabPane();
BorderPane mainPane = new BorderPane();
//Create Tabs
Tab tabA = new Tab();
tabA.setText("Tab A");
tabA.setContent(tv1);
tabPane.getTabs().add(tabA);
Tab tabB = new Tab();
tabB.setText("Tab B");
tabB.setContent(tv2);
tabPane.getTabs().add(tabB);
mainPane.setCenter(tabPane);
mainPane.prefHeightProperty().bind(scene.heightProperty());
mainPane.prefWidthProperty().bind(scene.widthProperty());
root.getChildren().add(mainPane);
primaryStage.setScene(scene);
primaryStage.show();
空:
推荐答案
您的代码有两个问题(我立即看到):
There are two problems with your code (that I see immediately):
您需要在 TableView的每一列上设置一个单元格值工厂
。如果没有这个,列就没有任何要显示的数据。所以你需要像
You need to set a cell value factory on each column of a TableView
. Without this, the column doesn't have any data to display. So you need something like
clmn.setCellValueFactory(cellData -> new ReadOnlyStringWrapper(cellData.getValue()));
其次,您使用相同的 TableColumn
对于两个表。我不认为这可行;单元格最终将被添加到两个不同位置的场景图形中(这是不允许的)。为每个表创建不同的列。
Secondly, you are using the same TableColumn
for both tables. I don't think this can work; the cells would end up being added to the scene graph in two different places (which is not allowed). Create different columns for each table.
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