JavaFX如何改变阶段
我正在使用带有Scene Builder 1.0的Netbeans 7.2来开发JavaFX应用程序。 我设置了主屏幕，我想拥有它，所以我点击一个按钮，它将关闭主窗口并打开另一个。 主Stage对象位于主类中，但控制器类是独立的，并且不能访问它，因为它不是静态的并且在不同的类中。 如何更改场景或舞台？
下载JavaFX示例找到项目FXML-LoginDemo，这就是您所需要的。 为了快速参考，我在这里复制粘贴主java类;）
/* * Copyright (c) 2008, 2011 Oracle and/or its affiliates. * All rights reserved. Use is subject to license terms. * * This file is available and licensed under the following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * - Neither the name of Oracle Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package demo; import demo.model.User; import demo.security.Authenticator; import java.util.logging.Level; import java.util.logging.Logger; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.fxml.JavaFXBuilderFactory; import javafx.scene.Parent; import javafx.scene.Scene; import javafx.stage.Stage; /** * Main Application. This class handles navigation and user session. */ public class App extends Application { private Stage stage; private User loggedUser; private static App instance; public App() { instance = this; } public static App getInstance() { return instance; } /** * @param args the command line arguments */ public static void main(String[] args) { launch(args); } @Override public void start(Stage primaryStage) { try { stage = primaryStage; gotoLogin(); primaryStage.show(); } catch (Exception ex) { Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex); } } public User getLoggedUser() { return loggedUser; } public boolean userLogging(String userId, String password){ if (Authenticator.validate(userId, password)) { loggedUser = User.of(userId); gotoProfile(); return true; } else { return false; } } public void userLogout(){ loggedUser = null; gotoLogin(); } private void gotoProfile() { try { replaceSceneContent("profile.fxml"); } catch (Exception ex) { Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex); } } private void gotoLogin() { try { replaceSceneContent("login.fxml"); } catch (Exception ex) { Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex); } } private Parent replaceSceneContent(String fxml) throws Exception { Parent page = (Parent) FXMLLoader.load(App.class.getResource(fxml), null, new JavaFXBuilderFactory()); Scene scene = stage.getScene(); if (scene == null) { scene = new Scene(page, 700, 450); scene.getStylesheets().add(App.class.getResource("demo.css").toExternalForm()); stage.setScene(scene); } else { stage.getScene().setRoot(page); } stage.sizeToScene(); return page; } } 我可能在这里说类似的东西，但这就是我这样做的方式：
（在这个例子中，我正在从Login.fxml转换到Home.fxml）。
在LoginController.fxml类中，我创建了以下方法：
@FXML private void login(javafx.event.ActionEvent event) throws IOException { if(pwf1.getText().equals("dolphin")) { Parent blah = FXMLLoader.load(getClass().getResource("Home.fxml")); Scene scene = new Scene(blah); Stage appStage = (Stage) ((Node) event.getSource()).getScene().getWindow(); appStage.setScene(scene); appStage.show(); } else { label1.setText("Password is incorrect. Please Try Again"); } }
就是这样。;）
你也可以这样做：
以这种方式修改controller.java
Stage thisStage; public void setStage (Stage stage){ thisStage = stage; } public void showStage(){ thisStage.setTitle("Titel in der MainController.java geändert"); thisStage.show(); }
在initialize方法中不要使用thisStage很重要。
以这种方式修改您的Mainclass：
@Override public void start(Stage stage) throws Exception { URL location = getClass().getResource("Main.fxml"); FXMLLoader fxmlLoader = new FXMLLoader(); fxmlLoader.setLocation(location); fxmlLoader.setBuilderFactory(new JavaFXBuilderFactory()); Parent root = (Parent) fxmlLoader.load(location.openStream()); Scene scene = new Scene(root); stage.setScene(scene); MainController mainController = fxmlLoader.getController(); mainController.setStage(stage); mainController.showStage(); }
您可以在此处下载示例projekt（netbeans）。
基于您的问题，最近我正在使用推送和解除视图的最简单的想法，为JavaFX开发iOS等效的NavigationController。
让我与社区分享代码： https ： //github.com/jalopezsuarez/javafx-screens
我们的想法是拥有一个非常简单的环境来帮助您在屏幕之间切换。
希望它能帮到你。