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JavaFX如何改变阶段

转载 作者:搜寻专家 更新时间:2023-10-30 19:49:03 25 4
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我使用带有 Scene Builder 1.0 的 Netbeans 7.2 来开发 JavaFX 应用程序。我设置了主屏幕,我想要它,所以我单击一个按钮,它将关闭主窗口并打开另一个。主舞台对象位于主类中,但 Controller 类是独立的,并且无法访问它,因为它不是静态的并且位于不同的类中。如何更改场景或舞台?

最佳答案

Download JavaFX samples找到项目 FXML-LoginDemo ,这就是您所需要的。为了快速引用,我在这里复制粘贴了主要的 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;
}
}

关于JavaFX如何改变阶段,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13003323/

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