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JAVAFX界面跳转和加载不同的界面

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JAVAFX界面跳转和加载不同的界面

2023-11-21 03:41| 来源: 网络整理| 查看: 265

主要分为两种情况

从一个界面跳转到另外一个新的界面在原有界面上加载其他页面。类似iframe

先从第一个情况的实现说起。

页面跳转 1. 创建一个登录界面

在这里插入图片描述

2. 创建登录页面对应的组件实现 package app.view.login; import java.net.URL; import java.util.ResourceBundle; import java.util.logging.Level; import java.util.logging.Logger; import app.alterview.ViewAlter; import javafx.fxml.FXML; import javafx.fxml.Initializable; import javafx.scene.control.Button; import javafx.scene.control.TextField; public class LoginController extends LoginView implements Initializable { private static final Logger logger = Logger.getLogger(LoginController.class.getName()); private ViewAlter viewAlter; @FXML private Button login_button; @FXML private TextField login_username; @FXML private TextField login_password; public void loginButtonClick() { logger.log(Level.INFO, "输入用户名为：" + login_username.getText()); logger.log(Level.INFO, "输入密 码为：" + login_password.getText()); if("nikolazhang".equalsIgnoreCase(login_username.getText()) && "123654".equalsIgnoreCase(login_password.getText())) { logger.log(Level.INFO, "登录成功！"); viewAlter.gotoMain(); } else { logger.log(Level.WARNING, "用户名或密码错误！"); } } @Override public void initialize(URL location, ResourceBundle resources) { } public void setApp(ViewAlter viewAlter) { this.viewAlter = viewAlter; } } 3. 创建一个主页面

登录进去之后显示该界面

在这里插入图片描述

4. 创建ViewAlter类用于跳转页面 package app.alterview; import java.io.InputStream; import java.util.logging.Level; import java.util.logging.Logger; import app.resource.StaticResourcesConfig; import app.view.login.LoginController; import app.view.main.MainController; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.fxml.Initializable; import javafx.fxml.JavaFXBuilderFactory; import javafx.scene.Scene; import javafx.scene.layout.AnchorPane; import javafx.stage.Stage; public class ViewAlter extends Application { private static final Logger logger = Logger.getLogger(ViewAlter.class.getName()); private Stage stage; @Override public void start(Stage primaryStage) throws Exception { stage = primaryStage; stage.setTitle("XXXX系统"); gotoLogin(); stage.show(); } /** * 跳转到登录界面 */ public void gotoLogin() { try { LoginController login = (LoginController) replaceSceneContent(StaticResourcesConfig.LOGIN_VIEW_PATH); login.setApp(this); } catch (Exception ex) { logger.log(Level.SEVERE, null, ex); } } /** * 跳转到主界面 */ public void gotoMain() { try { MainController main = (MainController) replaceSceneContent(StaticResourcesConfig.MAIN_VIEW_PATH); main.setApp(this); } catch (Exception ex) { logger.log(Level.SEVERE, null, ex); } } /** * 替换场景 * @param fxml * @return * @throws Exception */ private Initializable replaceSceneContent(String fxml) throws Exception { FXMLLoader loader = new FXMLLoader(); InputStream in = ViewAlter.class.getResourceAsStream(fxml); loader.setBuilderFactory(new JavaFXBuilderFactory()); loader.setLocation(ViewAlter.class.getResource(fxml)); try { AnchorPane page = (AnchorPane) loader.load(in); Scene scene = new Scene(page, StaticResourcesConfig.STAGE_WIDTH, StaticResourcesConfig.STAGE_HEIGHT); stage.setScene(scene); stage.sizeToScene(); } catch (Exception e) { logger.log(Level.SEVERE, "页面加载异常！"); } finally { in.close(); } return (Initializable) loader.getController(); } public static void main(String[] args) { launch(args); } }

这个类是应用的启动类。页面跳转主要使用了自定义的replaceSceneContent方法，该方法的输入参数为界面的fxml的路径。 应用启动后，执行start方法初始加载登录界面。点击登录按钮，调用LoginController 的loginButtonClick方法，进行登录验证。验证通过调用gotoMain方法，页面跳转到主界面。

同一个布局中加载不同的界面

这里主要是实现了主界面中的TreeView。主界面的控制组件实现如下：

package app.view.main; import java.io.IOException; import java.net.URL; import java.util.ResourceBundle; import java.util.logging.Level; import java.util.logging.Logger; import app.alterview.ViewAlter; import app.resource.StaticResourcesConfig; import javafx.collections.ObservableList; import javafx.fxml.FXML; import javafx.fxml.FXMLLoader; import javafx.fxml.Initializable; import javafx.scene.Node; import javafx.scene.control.ScrollPane; import javafx.scene.control.TreeItem; import javafx.scene.control.TreeView; import javafx.scene.layout.AnchorPane; public class MainController implements Initializable { private static final Logger logger = Logger.getLogger(MainController.class.getName()); private ViewAlter viewAlter; @FXML private TreeView main_treeview; @FXML private ScrollPane main_scroll_pane; @FXML private AnchorPane main_pane_under_scroll; public void setApp(ViewAlter viewAlter) { this.viewAlter = viewAlter; } @Override public void initialize(URL location, ResourceBundle resources) { setTreeView(); } /** * 设置TreeView */ @SuppressWarnings("unchecked") public void setTreeView() { TreeItem root = new TreeItem(StaticResourcesConfig.MAIN_TREE_HEADER); root.setExpanded(true); root.getChildren().addAll(new TreeItem(StaticResourcesConfig.MAIN_TREE_HEADER_ITEM1), new TreeItem(StaticResourcesConfig.MAIN_TREE_HEADER_ITEM2), new TreeItem(StaticResourcesConfig.MAIN_TREE_HEADER_ITEM3), new TreeItem(StaticResourcesConfig.MAIN_TREE_HEADER_ITEM4), new TreeItem(StaticResourcesConfig.MAIN_TREE_HEADER_ITEM5)); main_treeview.setRoot(root); } /** * TreeView 点击事件 * @throws IOException */ public void mainTreeViewClick() throws IOException { logger.log(Level.INFO, "点击TreeView"); // 获取鼠标当前点击的Item TreeItem selectedItem = main_treeview.getSelectionModel().getSelectedItem(); logger.log(Level.INFO, selectedItem.getValue()); String pagePath = ""; switch (selectedItem.getValue()) { case StaticResourcesConfig.MAIN_TREE_HEADER: pagePath = StaticResourcesConfig.DEFAULT_VIEW_PATH; break; case StaticResourcesConfig.MAIN_TREE_HEADER_ITEM1: pagePath = StaticResourcesConfig.NOTE_VIEW_PATH; break; case StaticResourcesConfig.MAIN_TREE_HEADER_ITEM2: pagePath = StaticResourcesConfig.CLIP_VIEW_PATH; break; case StaticResourcesConfig.MAIN_TREE_HEADER_ITEM3: pagePath = StaticResourcesConfig.USER_VIEW_PATH; break; case StaticResourcesConfig.MAIN_TREE_HEADER_ITEM4: pagePath = StaticResourcesConfig.DATA_VIEW_PATH; break; case StaticResourcesConfig.MAIN_TREE_HEADER_ITEM5: pagePath = StaticResourcesConfig.LANGUAGE_VIEW_PATH; break; } skipView(pagePath); } /** * 改变右侧scroll的界面 * @param pagePath * @throws IOException */ private void skipView(String pagePath) throws IOException { logger.info("显示剪切板界面"); ObservableList scrolChildren = main_pane_under_scroll.getChildren(); scrolChildren.clear(); scrolChildren.add(FXMLLoader.load(getClass().getResource(pagePath))); } }

main_treeview.getSelectionModel().getSelectedItem();获取鼠标点击的是哪个项目。根据点击加载不同的界面。加载界面时调用的方法为skipView，该方法首先清空之前布局中存在的元素，并通过FXMLLoader重新加载我们需要的页面。 效果如下： 在这里插入图片描述

在这里插入图片描述

补充

StaticResourcesConfig定义如下

package app.resource; public final class StaticResourcesConfig { public final static int STAGE_WIDTH = 800; public final static int STAGE_HEIGHT = 600; public final static String LOGIN_VIEW_PATH = "/app/view/login/LoginView.fxml"; public final static String MAIN_VIEW_PATH = "/app/view/main/MainView.fxml"; public final static String CLIP_VIEW_PATH = "/app/view/panel/clip/ClipView.fxml"; public final static String NOTE_VIEW_PATH = "/app/view/panel/note/NoteView.fxml"; public static final String DEFAULT_VIEW_PATH = "/app/view/panel/note/NoteView.fxml"; public static final String LANGUAGE_VIEW_PATH = "/app/view/panel/note/NoteView.fxml"; public static final String DATA_VIEW_PATH = "/app/view/panel/datanaly/DataView.fxml"; public static final String USER_VIEW_PATH = "/app/view/panel/usermanage/UserView.fxml"; // WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW // WWW 界面字段显示 WWW // WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW public final static String MAIN_TREE_HEADER = "首页"; public final static String MAIN_TREE_HEADER_ITEM1 = "记事本"; public final static String MAIN_TREE_HEADER_ITEM2 = "剪贴板"; public final static String MAIN_TREE_HEADER_ITEM3 = "用户管理"; public final static String MAIN_TREE_HEADER_ITEM4 = "数据分析"; public final static String MAIN_TREE_HEADER_ITEM5 = "语言"; }


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