如何设置和获取JavaFX表的单元格值，如swing JTable

我是JavaFX新手，想知道如何设置和获取JavaFX表的单元格值，如Swing JTable 。 即JavaFX表中Swing JTable的setValueAt()和getValueAt的替代方法。

 //would like to get the index of column by Name int index_RunnableQueueItem = tableQueue.getColumns().indexOf("RunnableQueueItem"); //would like to get the selected row int row = tableQueue.getSelectionModel().getSelectedIndex(); if (index_RunnableQueueItem != -1 && row != -1) { // would like to get the value at index of row and column. //Update that value and set back to cell. } 

Answer 1

TableView确实不支持这种方法。

这是一种使用reflection做你想做的事情有点脆弱的方法。 它完全取决于您在单元格值工厂中使用PropertyValueFactory，因此它可以查找属性名称。

 class MyItem { SimpleStringProperty nameProperty = new SimpleStringProperty("name"); public MyItem(String name) { nameProperty.set(name); } public String getName() { return nameProperty.get(); } public void setName(String name) { nameProperty.set(name); } public SimpleStringProperty getNameProperty() { return nameProperty; } } ... TableView t = new TableView(); TableColumn col = new TableColumn("Name Header"); col.setCellValueFactory(new PropertyValueFactory("name")); t.getColumns().addAll(t); ... public void setValue(int row, int col, Object val) { final MyItem selectedRow = t.getItems().get(row); final TableColumn selectedColumn = t.getColumns().get(col); // Lookup the propery name for this column final String propertyName = ((PropertyValueFactory)selectedColumn.getCellValueFactory()).getProperty(); try { // Use reflection to get the property final Field f = MyItem.class.getField(propertyName); final Object o = f.get(selectedRow); // Modify the value based on the type of property if (o instanceof SimpleStringProperty) { ((SimpleStringProperty)o).setValue(val.toString()); } else if (o instanceof SimpleIntegerProperty) { ... } } catch (Exception ex) { ex.printStackTrace(); } } 

Answer 2

从JavaFx TableView单元中检索简单值

您可以使用其他post中列出的侦听器，但如果您希望从单元格中获取一个简单的值，则可以使用更简单的方法

 Example: // Get the row index where your value is stored int rowIndex = tableView.getSelectionModel().getSelectedIndex(); // Since you can't get the value directly from the table like the // getValueAt method in JTable, you need to retrieve the entire row in // FXCollections ObservableList object ObservableList rowList = (ObservableList) tableViewModelos.getItems().get(rowIndex); // Now you have an ObservableList object where you can retrieve any value // you have stored using the columnIndex you now your value is, starting // indexes at 0; // In my case, I want to retrieve the first value corresponding to the first column //index, and I know it is an Integer Value so I'll cast the object. int columnIndex = 0; int value = Integer.parseInt(rowList.get(columnIndex).toString()); 

希望这个例子可以帮助你。