>我有一个TableView，我想在其中显示设备的功能和属性列表，该列表存储在一个HashMap<Integer, CustomClass>中，当新项目添加到HashMap时会更新。
我尝试了不同的方法来显示数据，但没有成功，并查看了其他问题中的示例，但它似乎不起作用。 也许我很困惑，因为我的javaFX布局使用的是与大多数示例不匹配的FXML和控制器类方法。
谁能帮助指出我做错了什么？
下面是控制器中的代码：
public class MainController implements Initializable {
@FXML
private ToggleButton activateBtn;
@FXML
private Label dispTime;
@FXML
private Button timeControl;
@FXML
private ChoiceBox paceNum;
@FXML
private TableView<Map> trainTable;
@FXML
private TableColumn trainIdCol;
@FXML
private TableColumn speedCol;
@FXML
private TableColumn authCol;
@FXML
private TableColumn trainTimeCol;
@FXML
private TableColumn driverCol;
@FXML
private TableColumn driverTimeCol;
@FXML
private TableColumn lineCol;
@FXML
private TableColumn directionCol;
@FXML
private TableColumn locColX;
@FXML
private TableColumn locColY;
@FXML
private TableColumn destCol;
@FXML
private TableColumn timeToCol;
@FXML
private TextArea ta;
@FXML
private MenuItem closeButton;
/*
* get all the trains to display
*/
static final ObservableList<HashMap<Integer, MboTrain>> trainList = FXCollections.observableArrayList(MboTrain.trainList);
@Override
public void initialize(URL url, ResourceBundle rb) {
reportData(">System initializing...");
/*
* Identify which train values to list in the train table
*/
trainIdCol.setCellValueFactory(new MapValueFactory("trainId"));
speedCol.setCellValueFactory(new MapValueFactory("speed"));
authCol.setCellValueFactory(new MapValueFactory("authority"));
trainTimeCol.setCellValueFactory(new MapValueFactory("trainTime"));
driverCol.setCellValueFactory(new MapValueFactory("driverId"));
driverTimeCol.setCellValueFactory(new MapValueFactory("driverTime"));
lineCol.setCellValueFactory(new MapValueFactory("line"));
directionCol.setCellValueFactory(new MapValueFactory("direction"));
locColX.setCellValueFactory(new MapValueFactory("currentLoc"));
locColY.setCellValueFactory(new MapValueFactory("currentLoc"));
destCol.setCellValueFactory(new MapValueFactory("nextLoc"));
timeToCol.setCellValueFactory(new MapValueFactory("timeToNext"));
/*
* mark the columns as Map read values
*/
Callback<TableColumn<Map, String>, TableCell<Map, String>>
cellFactoryForMap = null;
trainIdCol.setCellFactory(cellFactoryForMap);
speedCol.setCellFactory(cellFactoryForMap);
authCol.setCellFactory(cellFactoryForMap);
trainTimeCol.setCellFactory(cellFactoryForMap);
driverCol.setCellFactory(cellFactoryForMap);
driverTimeCol.setCellFactory(cellFactoryForMap);
lineCol.setCellFactory(cellFactoryForMap);
directionCol.setCellFactory(cellFactoryForMap);
locColX.setCellFactory(cellFactoryForMap);
locColY.setCellFactory(cellFactoryForMap);
destCol.setCellFactory(cellFactoryForMap);
timeToCol.setCellFactory(cellFactoryForMap);
/*
* call the update method to have the MBO pull a list of active trains into the table
*/
try {
MboTrain.updateTrainList();
} catch (IOException e) {
e.printStackTrace();
}
/*
* establish table properties and get the data for the columns
*/
trainTable.setEditable(false);
trainTable.getSelectionModel().setCellSelectionEnabled(false);
trainTable.getColumns().setAll(trainIdCol, speedCol, authCol, trainTimeCol, driverCol, driverTimeCol,
lineCol, directionCol, locColX, locColY, destCol, timeToCol);
/*
* run the callback method to have the columns callback to a Map for data
*/
cellFactoryForMap = new Callback<TableColumn<Map, String>,
TableCell<Map, String>>() {
@Override
public TableCell call(TableColumn p) {
return new TextFieldTableCell(new StringConverter() {
@Override
public String toString(Object t) {
return t.toString();
}
@Override
public Object fromString(String string) {
return string;
}
});
}
};
}
和自定义类对象：
public class MboTrain {
/*
* list of trains created in the system
*/
private static ArrayList<Integer> trainListPull;
public static HashMap<Integer, MboTrain> trainList;
private Integer trainId;
private double speed;
private double authority;
private long trainStartTime;
private long trainTime;
private int driverId;
private long driverTime;
private LineId line;
private Boolean direction;
private String directionString;
private double currentLocX;
private double currentLocY;
private Block nextBlock;
private Station nextStation;
private Block nextStationBlock;
private long timeToNext;
private Block[] track;
private Route route;
private Block destinationBlock;
private Block currentBlock;
/*
* generates a default train object and places it in the map
*/
public MboTrain(LineId m_line) throws IOException {
int pId = createTrain("MboCreatedTrain");
placeTrainOnLine(pId, m_line);
this.line = m_line;
this.trainId = pId;
this.speed = 0;
this.authority = 0;
this.trainStartTime = MboClock.updateTime();
this.trainTime = 0;
this.driverId = 0;
this.driverTime = 0;
this.line = m_line;
this.direction = true;
this.directionString = "outbound";
this.currentLocX = 0;
this.currentBlock = MboTrack.getYard(m_line);
this.nextBlock = getNextBlock();
this.nextStationBlock = this.nextBlock;
this.setNextStation();
this.timeToNext = 0;
this.route = null;
if (trainList == null)
{
trainList = new HashMap<>();
}
trainList.put(pId,this);
}
public static boolean createMboTrain(LineId m_line) throws IOException
{
MboTrain m_train = new MboTrain(m_line);
if (m_train == null)
{
return false;
}
else
{
return true;
}
}
/*
* update the list of available trains from train model handler
*/
public static void updateTrainList() throws IOException {
trainListPull = getTrainList();
LineId line;
MboTrain m_train;
trainList = new HashMap<>();
for (Integer tid : trainListPull) {
System.out.println("well, we're checking the trainlist map for "+tid);
if (trainList.containsKey(tid))
{
// do nothing since train already in map
System.out.println("doing nothing - already in map");
}
else
{
if (trainLineMap.containsKey(tid)) {
System.out.println("train is on a line - creating train on a line and adding to map");
line = trainLineMap.get(tid);
m_train = new MboTrain(line);
//m_train.getCurrentLoc();
trainList.put(tid, m_train);
System.out.println("success - we've added train "+tid+" on line "+line.toString()+" to the map");
} else {
System.out.println("train isn't on a line - so creating train with null lineId and adding to map");
m_train = new MboTrain(null);
trainList.put(tid, m_train);
System.out.println("success - we've added train "+tid+" to the map with line=null");
}
}
}
}
任何帮助不胜感激！！
我意识到我只是错了。 因此，我将遵循James_D的建议，仅使用地图的 ObservableList 表示并显示该列表。 我将其标记为关闭，因此我不会在此浪费任何人的时间。
谢谢