JavaFX：实现页面切换

     
     

      
      
【Popup - Main】
      
      
public class Popup extends AnchorPane {
      
      

      
      
 private static Popup popup; //本类实例内部封装在静态数据域，
      
      
 
      
      
 private Data data ; //对外交换输出使用的自定义数据结构
      
      
 private Controller controller;
      
      
 priavte Stage primaryStage;
      
      

      
      
 //本类实例内部封装在静态数据域，构造方法私有
      
      
 private Popup(){ 
      
      
 try{
      
      
 FXMLLoader fxmlloader = new FXMLloader(getClass().getResource("myDialog.fxml"))
      
      
 Parent root = FXMLLoader.load();
      
      
 primaryStage = new Stage();
      
      
 primaryStage.setResizable(false); //固定窗口大小
      
      
 primaryStage.setTitle("Input your message");
      
      
 primaryStage.setScene(new Scene(root,300,275));
      
      

      
      
  Controller controller = fxmlloader.getControler();
      
      
 controller.start(popup);  //传递Popup实例对象，同时启动Controller的按钮动作绑定
      
      

      
      
 }catch(IOException ex){
      
      
 ex.printStackTrace();
      
      
 }
      
      
 }
      
      

      
      
  //外部调用方法:显示弹窗，返回数据交换用的数据结构
      
      
  public static Data showPopup(){ 
      
      
 popup = new Popup();
      
      
 if(primaryStage != null)
      
      
 primaryStage.showAndWait(); 
      
      
 //显示弹窗，并中将原线程挂起；如果没有获取数据的需求，可以直接 primaryStage.show();
      
      
 return popup.getData();
      
      
 }
      
      

      
      
 //实例方法：关闭弹窗
      
      
 public void hide(){
      
      
 if(primaryStage != null)
      
      
 primaryStage.hide();
      
      
 } 
      
      
 //实例方法：获取交换数据
      
      
 public Data getData(){
      
      
 return data;
      
      
 }
      
      

      
      
 //对外交换输出使用的自定义数据结构
      
      
 public static class Data{
      
      
 private String id;
      
      
 private String name;
      
      
 private String city;
      
      
 public Data(){
      
      
 }
      
      
 public Data(String id,String name,String city){
      
      
 this.id = id;
      
      
 this.name = name;
      
      
 this.city = city;
      
      
 }
      
      
 //省略数据域的get、set方法 
      
      
}
     
     

     
     

      
      
【Popup - Main】
      
      
public class Popup extends AnchorPane {
      
      
  private static Popup popup;
      
      
 
      
      
 private String param;
      
      
 priavte Stage stage;
      
      
 //构造方法：私有 
      
      
  private Popup(param){
      
      
 this.param = param;
      
      
 try{
      
      
 Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
      
      
 Stage stage = new Stage();
      
      
 stage.setTitle(engine.getTitle());
      
      
 stage.setScene(new Scene(root,800,600));
      
      
 }catch(IOException ex){
      
      
 ......
      
      
 }
      
      
 }
      
      
 priavte Popup(){
      
      
 this("no param");
      
      
 }
      
      
 public Stage getStage(){
      
      
 return this.stage;
      
      
 }
      
      

      
      
 //外部调用方法
      
      
  public static void showPopup(String param){
      
      
 popup = new Popup(param); //构造实例
      
      
 popup.getStage().show(); //显示页面
      
      
 }
      
      
 public static void showPopup(){
      
      
 popup = new Popup(param); //构造实例
      
      
 popup.getStage().show(); //显示页面
      
      
 }
      
      
 
      
      
}
     
     

     
     

      
      
调用:
      
      
button.setOnAction(event->{
      
      
  new Popup();
      
      
});
     
     

     
     

      
      
【Popup-Main】
      
      
public class Popup{
      
      
public Popup(){
      
      
 Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
      
      
 Stage stage = new Stage();
      
      
 stage.setTitle(engine.getTitle());
      
      
 stage.setScene(new Scene(root,800,600));
      
      
 stage.show();
      
      
}
      
      
}