查找並添加TreeItem到JavaFX中的現有節點

Question

我想用TreeItems從HashMap填充我的TreeView。一些數據攜帶屬性「isProject」，這意味着它是某個客戶端的項目。我正在嘗試將這些Project節點添加到更高級的客戶端節點中......但是建立一個可怕的反饋循環。有沒有更好的方法來獲取特定節點（TreeItem）並添加另一個節點？或者讓代碼有效的方法？謝謝！

@SuppressWarnings({ "rawtypes", "unchecked" }) 
private void showTimeRecords() { 
    ArrayList<TimeRecord> timeRecords = new ArrayList<>(); 
    ObservableList<PerformanceLogTableData> pflData = FXCollections.observableArrayList(); 
    TimeDataRecords rootValue = new TimeDataRecords("Client/Project", "", "", false, timeRecords, pflData); 

    YearMonth setYM = YearMonth.of(2016, currMonth); 
    root = new TreeItem<TimeDataRecords>(); 

    HashMap<String,TimeDataRecords> timeDataRecsMap = timeDataRecsBigMap.get(setYM); 

    for (HashMap.Entry<String, TimeDataRecords> entry : timeDataRecsMap.entrySet()) { 
     TreeItem<TimeDataRecords> node = new TreeItem<TimeDataRecords>(entry.getValue()); 

     if (entry.getValue().isProject()) { 
      for (int i = 0; i < root.getChildren().size(); i++) { 
       if(root.getChildren().get(i).getValue().getName().equals(entry.getValue().getName())){ 
       TreeItem<TimeDataRecords> tempNode = new TreeItem<TimeDataRecords>(root.getChildren().get(i).getValue()); 
       tempNode.getChildren().add(node); 
       root.getChildren().add(tempNode); 
       } 
      } 

     }else{    
      root.getChildren().add(node); 
      System.out.println(entry.getValue().getId() + " --- " + entry.getValue().getProject() + " --- " + entry.getValue().isProject()); 
     } 
    } 
    root.setValue(rootValue); 
    root.setExpanded(true); 
    treeView.setRoot(root); 
    treeView.setEditable(false); 
} 

Answer 1

嘗試在項目數據首先在LinkedList中預先設置。

LinkedList<TreeItem<TimeDataRecords>> entrys = new LinkedList<>(); 

for(TimeDataRecords entry : timeDataRecsMap.values()){ 
    TreeItem<TimeDataRecords> node = new TreeItem<TimeDataRecords>(entry); 

    if(entry.isProject()) entrys.addFirst(node); 
    else entrys.addLast(node); 
} 

root.getChildren().addAll(entrys);