Java Can';t使jcombox更新JFrame

Java Can';t使jcombox更新JFrame,java,swing,jframe,actionlistener,jcombobox,Java,Swing,Jframe,Actionlistener,Jcombobox,如果你能帮我一点忙,我将不胜感激 问题 我们有一个带组合框的幻想班。从组合框中选择一个队形时,框架会用按钮更新。但是,因为当我将action listener添加到组合框中时,它只允许我在main方法中创建类时在fantasy类的构造函数中执行,所以我必须将fantasy类和squad类交给TeamController类,因此在创建fantasy类时,action listner不在组合框中,所以它不起作用了。任何帮助都将不胜感激 主类 幻想班 public类扩展JFrame{ 私人JPanel

如果你能帮我一点忙,我将不胜感激

问题 我们有一个带组合框的幻想班。从组合框中选择一个队形时,框架会用按钮更新。但是,因为当我将action listener添加到组合框中时,它只允许我在main方法中创建类时在fantasy类的构造函数中执行,所以我必须将fantasy类和squad类交给
TeamController
类,因此在创建fantasy类时,action listner不在组合框中,所以它不起作用了。任何帮助都将不胜感激

主类 幻想班
public类扩展JFrame{
私人JPanel goalPanel;
私人JPanel辩护小组;
私人JPanel中面板;
私人JPanel小组;
私人JPanel长椅;
私人JComboBox组;
私人按钮myButton;
私人团队控制器控制;
私有文本控制器;
私有列表<按钮>按钮;
公众幻想(){
超级(“梦幻足球”);
按钮=新阵列列表<按钮>();
createWidgets();
}
公共void createWidgets(){
JPanel formPanel=新的JPanel(新的网格布局(1,0));
goalPanel=newJPanel(newflowLayout());
DefendenPanel=newJPanel(newFlowLayout());
midPanel=newjpanel(newflowlayout());
attPanel=新的JPanel(新的FlowLayout());
工作台=新的JPanel(新的FlowLayout());
JComboBox formation=新JComboBox();
字符串[]addFormation={
"4 - 4 - 2", "4 - 3 - 3", "3 - 5 - 2", "5 - 3 - 2", "3 - 4 - 3", "4 - 5 - 1"
};
for(字符串新形式:addFormation){
形成。附加项(新形式);
}
形成。addActionListener(控制);
setLayout(新的GridLayout(6,0));
添加(formPanel);
formPanel.add(formation);
添加(goalPanel);
增加(专家组);
添加(中间面板);
添加(附件面板);
增加(工作台);
包装();
setDefaultCloseOperation(关闭时退出);
}
公共JComboxGetForm(){
回流形成;
}
公共JPanel getGoal(){
回传门;
}
公共JPanel getDef(){
返回面板;
}
公共JPanel getMid(){
返回中面板;
}
公共JPanel getAtt(){
返回面板;
}
公共JPanel getBench(){
返回台;
}
public void createDefender(字符串文本,字符串ID){
添加按钮(文本、ID、面板);
}
public void createMid(字符串文本,字符串ID){
添加按钮(文本、ID、中间面板);
}
public void createAtt(字符串文本,字符串ID){
添加按钮(文本、ID、附件面板);
}
公共无效添加按钮(字符串文本、字符串ID、JPanel面板){
myButton=新按钮(文本,ID);
myButton.getButton().addActionListener(控件);
myButton.getText().addTextListener(tControl);
按钮。添加(myButton);
面板。添加(myButton);
}
public void updateController(TeamController控件、TextController控件){
这个控制=控制;
this.tControl=tControl;
}
公共列表<按钮>获取按钮(){
返回按钮;
}
}
ActionListner-TeamController类
公共类TeamController实现ActionListener{
私人幻想;
私人小队,;
私人JComboBox表格;
私有数组列表<按钮>按钮;
公共队控制员(幻想队、幻想队){
这个。幻想=幻想;
this.form=fantasy.getForm();
this.button=(ArrayList
public class Fantasy extends JFrame {
  private JPanel goalPanel;
  private JPanel defendPanel;
  private JPanel midPanel;
  private JPanel attPanel;
  private JPanel bench;
  private JComboBox formation;
  private Button myButton;
  private TeamController control;
  private TextController tControl;
  private List < Button > buttons;

  public Fantasy() {
    super("Fantasy Football");
    buttons = new ArrayList < Button > ();
    createWidgets();
  }

  public void createWidgets() {
    JPanel formPanel = new JPanel(new GridLayout(1, 0));
    goalPanel = new JPanel(new FlowLayout());
    defendPanel = new JPanel(new FlowLayout());
    midPanel = new JPanel(new FlowLayout());
    attPanel = new JPanel(new FlowLayout());
    bench = new JPanel(new FlowLayout());

    JComboBox formation = new JComboBox();
    String[] addFormation = {
      "4 - 4 - 2", "4 - 3 - 3", "3 - 5 - 2", "5 - 3 - 2", "3 - 4 - 3", "4 - 5 - 1"
    };

    for (String newForm: addFormation) {
      formation.addItem(newForm);
    }

    formation.addActionListener(control);

    setLayout(new GridLayout(6, 0));
    add(formPanel);
    formPanel.add(formation);
    add(goalPanel);
    add(defendPanel);
    add(midPanel);
    add(attPanel);
    add(bench);

    pack();
    setDefaultCloseOperation(EXIT_ON_CLOSE);
  }

  public JComboBox getForm() {
    return formation;
  }

  public JPanel getGoal() {
    return goalPanel;
  }

  public JPanel getDef() {
    return defendPanel;
  }

  public JPanel getMid() {
    return midPanel;
  }

  public JPanel getAtt() {
    return attPanel;
  }

  public JPanel getBench() {
    return bench;
  }

  public void createDefender(String text, String ID) {
    addButtons(text, ID, defendPanel);
  }

  public void createMid(String text, String ID) {
    addButtons(text, ID, midPanel);
  }

  public void createAtt(String text, String ID) {
    addButtons(text, ID, attPanel);
  }

  public void addButtons(String text, String ID, JPanel panel) {
    myButton = new Button(text, ID);
    myButton.getButton().addActionListener(control);
    myButton.getText().addTextListener(tControl);
    buttons.add(myButton);
    panel.add(myButton);
  }

  public void updateController(TeamController control, TextController tControl) {
    this.control = control;
    this.tControl = tControl;
  }

  public List < Button > getButtons() {
    return buttons;
  }

}
public class TeamController implements ActionListener {
  private Fantasy fantasy;
  private Squad squad;
  private JComboBox form;
  private ArrayList < Button > button;

  public TeamController(Fantasy fantasy, Squad squad) {
    this.fantasy = fantasy;
    this.form = fantasy.getForm();
    this.button = (ArrayList < Button > ) fantasy.getButtons();
    this.squad = squad;
  }


  public void actionPerformed(ActionEvent e) {
    if (e.getSource() == form) {
      comboChooser((JComboBox) e.getSource());
    } else {
      fileChooser((Button) e.getSource());
    }
  }

  public void comboChooser(JComboBox form) {
    //restart the pane
    fantasy.getContentPane().removeAll();
    fantasy.createWidgets();
    //add the goalie buttons and labels in
    fantasy.addButtons("GoalKeeper", squad.getAllGoal().get(0).getID(), fantasy.getGoal());
    //2. break it up into each def mid att
    //JComboBox format = form;
    String[] split = ((String) form.getSelectedItem()).split("-");
    int[] splits = new int[3];
    for (int i = 0; i < split.length; i++) {
      splits[i] = Integer.parseInt(split[i].trim());
    }
    //3. create number of widgets for each posit in each panel
    //4. add leftover to bench

    makeDefender(splits[0], squad.getAllDef());
    makeMid(splits[1], squad.getAllMid());
    makeAttack(splits[2], squad.getAllAtt());

    fantasy.pack();
  }

  public void fileChooser(Button button) {
    final JFileChooser fileChooser = new JFileChooser("C:\\Users\\Michael\\Documents\\Java WorkSpace\\ExerciseThree\\Minor Piece of Coursework 3 Resources\\squad");
    int getVal = fileChooser.showOpenDialog(button.getButton());
    if (getVal == JFileChooser.APPROVE_OPTION) {
      File file = fileChooser.getSelectedFile();
      button.getButton().setVisible(false);
      button.add(button.updateButton(file), BorderLayout.CENTER);
      Player selectedPlayer = squad.getByID(button.getName());
      selectedPlayer.setPath(file.getPath());
      String playerName = file.getName();
      if (playerName.endsWith(".jpg")) {
        playerName.substring(0, playerName.length() - 4);
        selectedPlayer.setName(playerName);
      }
      button.getText().setText(playerName);
    } else {
      System.out.println("Cancelled your choice");
    }

  }

  public void makeDefender(int number, List < Defender > list) {
    for (int i = 0; i < number; i++) {
      String ID = list.get(i).getID();
      fantasy.createDefender("Defender", ID);
    }
  }

  public void makeMid(int number, List < Midfielder > list) {
    for (int i = 0; i < number; i++) {
      String ID = list.get(i).getID();
      fantasy.createMid("Midfielder", ID);
    }
  }

  public void makeAttack(int number, List < Striker > list) {
    for (int i = 0; i < number; i++) {
      String ID = list.get(i).getID();
      fantasy.createAtt("Striker", ID);
    }
  }

  public void updateSquad(Squad squad) {
    this.squad = squad;
  }
}
public interface FantasyView {

    public String getFormation();
    public void setFormation(String formation); // Maybe throw an IllegalArgumentException or use an object or enum

    // Other information which the might be useful to return
    public void addFormationChangedObserver(ChangeListener listener);
    public void removeFormationChangedObserver(ChangeListener listener);

    public JComponent getView();

}

public interface SquadModel {
    // Some getters and setters
    // Some observers so the controller and get notified by changes and
    // update the view accordingly...
}

public interface TeamController {
    public FantasyView getView();
    public SquadModel getModel();
}
public class DefaultTeamController implements TeamController {

    private FantasyView view;
    private SquadModel model;

    public DefaultTeamController(FantasyView view, SquadModel model) {
        this.view = view;
        this.model = model;

        view.addFormationChangedObserver(new ChangeListener() {
            @Override
            public void stateChanged(ChangeEvent e) {
                SquadModel model = getModel();
                // update model accordingly
            }
        });

        // Add observers to model...
    }

    @Override
    public FantasyView getView() {
        return view;
    }

    @Override
    public SquadModel getModel() {
        return model;
    }

}
JComboBox formation = new JComboBox();
//...
formation.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        fireFormationChanged();
    }
});

//...

protected void fireFormationChanged() {
    // changeListeners is a simple List of ChangeListener
    // this is instance of FantasyView
    ChangeEvent evt = new ChangeEvent(this);
    for (ChangeListener listener : changeListeners) {
        listener.stateChanged(evt);
    }
}