在一列中添加两个按钮并获取点击行值javafx

我想在javafx中的表视图的一列中实现两个按钮。我能够在一列中实现一个按钮，但无法在一列中添加两个按钮。我有一些想法从这个链接在一列中添加两个按钮并获取点击行值javafx

我使用这个想法在上面的链接。但是，代码不适合我。

TableColumn<Student, String> firstCol = new TableColumn<Student, String>("ID"); 
    TableColumn<Student, String> secondCol = new TableColumn<Student, String>("Name"); 
    TableColumn<Student, String> thirdCol = new TableColumn<Student, String>("Quiz Mark"); 
    TableColumn<Student, String> forthCol = new TableColumn<Student, String>("A1"); 
    TableColumn<Student, String> fifthCol = new TableColumn<Student, String>("A2"); 
    TableColumn<Student, String> sixthCol = new TableColumn<Student, String>("A3"); 
    TableColumn<Student, String> sevenCol = new TableColumn<Student, String>("Exam"); 
    TableColumn<Student, String> eightCol = new TableColumn<Student, String>("Result"); 
    TableColumn<Student, String> nineCol = new TableColumn<Student, String>("Grade"); 
    TableColumn<Student, Student> tenthCol = new TableColumn<Student, Student>("Action"); 


firstCol.setCellValueFactory(new PropertyValueFactory<>("Id")); 
    secondCol.setCellValueFactory(new PropertyValueFactory<>("Name")); 
    thirdCol.setCellValueFactory(new PropertyValueFactory<>("QuizMark")); 
    forthCol.setCellValueFactory(new PropertyValueFactory<>("Assingment1Mark")); 
    fifthCol.setCellValueFactory(new PropertyValueFactory<>("Assingment2Mark")); 
    sixthCol.setCellValueFactory(new PropertyValueFactory<>("Assingment3Mark")); 
    sevenCol.setCellValueFactory(new PropertyValueFactory<>("ExamMark")); 
    eightCol.setCellValueFactory(new PropertyValueFactory<>("Result")); 
    nineCol.setCellValueFactory(new PropertyValueFactory<>("Grade")); 
    tenthCol.setCellFactory(param -> new TableCell<Student, Student>() { 
     private final Button editButton = new Button("edit"); 
     private final Button deleteButton = new Button("delete"); 
     HBox pane = new HBox(deleteButton, editButton); 

     @Override 
     protected void updateItem(Student patient, boolean empty) { 
      super.updateItem(patient, empty); 

      if (patient == null) { 
       setGraphic(null); 
       return; 
      } 

      deleteButton.setOnAction(event -> { 
       Student getPatient = getTableView().getItems().get(getIndex()); 
       System.out.println(getPatient.getId() + " " + getPatient.getName()); 
      }); 

      editButton.setOnAction(event -> { 
       Student getPatient = getTableView().getItems().get(getIndex()); 
      }); 
      pane.getChildren().addAll(deleteButton,editButton); 
      setGraphic(pane); 
     } 
    });

在，不出现的动作列按钮不会。我在哪里做错了。请任何人都让我知道。

来源

2017-09-30 San Jaisy

由于缺乏cellValueFactory项目为细胞tenthColumn是总是null。使用updateItem方法的第二个参数来确定该行是否为空。

此外，为了说明这一点，我会将列的类型更改为TableColumn<Student, Void>。

此外再次每次项改变是不必要的，因为在更新处理程序onAction时间加入HBox的儿童，由于getIndex()在被点击Button的时间进行评价。

您可以将代码改成这样：

TableColumn<Student, Void> tenthCol = new TableColumn<>("Action"); 

... 

tenthCol.setCellFactory(param -> new TableCell<Student, Void>() { 
    private final Button editButton = new Button("edit"); 
    private final Button deleteButton = new Button("delete"); 
    private final HBox pane = new HBox(deleteButton, editButton); 

    { 
     deleteButton.setOnAction(event -> { 
      Student getPatient = getTableView().getItems().get(getIndex()); 
      System.out.println(getPatient.getId() + " " + getPatient.getName()); 
     }); 

     editButton.setOnAction(event -> { 
      Student getPatient = getTableView().getItems().get(getIndex()); 
     }); 
    } 

    @Override 
    protected void updateItem(Void item, boolean empty) { 
     super.updateItem(item, empty); 

     setGraphic(empty ? null : pane); 
    } 
});

来源

2017-09-30 06:52:51 fabian

在一列中添加两个按钮并获取点击行值javafx

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